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Journal articles on the topic 'Pausdom'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 August 2024

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1

Müller, Daniela. "‘s Werelds oudste institutie. Het pausdom - Frans Willem Lantink en Jeroen Koch ed., De paus en de wereld. Geschiedenis van een instituut (Boom; Amsterdam 2012) 400 p., ill., €29,90 ISBN 9789461053572." Tijdschrift voor Geschiedenis 126, no. 3 (September 1, 2013): 404–5. http://dx.doi.org/10.5117/tvgesch2013.3.b3.

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2

Haboud Bumachar, Marleen. "Andeetako ahots eta arbasoen jakintzetara itzul gaitezen, elkarrizketaren metodologia erabiliz: aurrerapausoak eta erronkak." BAT SOZIOLINGUISTIKA ALDIZKARIA 129, no. 10.55714 (February 7, 2024): 31–55. http://dx.doi.org/10.55714/bat-129.2.

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Artikulu honek Andeetako Ahotsak eta Arbasoen Jakintzak proiektuaren filosofia eta metodologia deskribatzen ditu, kitxuaz ez hitz egin arren, beraien burua kitxuatzat duten Ekuadorko landa eremuko zenbait komunitaterekin lotuta. Proiektu hori Pintag parrokiako (Pichincha probintzia) hiru komunitatetan egin da, Quito hiriburutik 35 km-ra. Proiektuak inguruko landare sendagarriak berriz aurkitzeko prozesua eta herritarren sendatze praktikak erakusten ditu, pausoz pauso, eta garrantzi berezia ematen dio ikerketa elkarrizketan oinarritzeari eta haren diziplinartekotasunari. Ikerlan honen ikuspegi metodologikoa ulertzeko, aurrez egindako zenbait ikerketa lan azaldu dira, lehenbizi. Ondoren, dokumentazio eta biziberritze prozesua zehaztu da, eta azpimarra egin da bidean izan diren erronka batzuetan izandako arrakastan eta beste lorpen batzuetan; izan ere, ekimen komunitarioetan epe luzerako lorpenak izan daitezkeela aurreikusten da. • Hitz gakoak: Ekuador, hizkuntza eta kultura biziberritzea, oinarrizko komunitateekin ikerketa, elkarrizketaren metodologia, diziplinartekotasuna, dokumentazio aktiboa, biziberritzea.
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3

Chen, Sijia, Chongguo Jiang, Nan Zheng, Zhen Yang, and Lili Shi. "Evolution of Pauson-Khand Reaction: Strategic Applications in Total Syntheses of Architecturally Complex Natural Products (2016–2020)." Catalysts 10, no. 10 (October 16, 2020): 1199. http://dx.doi.org/10.3390/catal10101199.

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Metal-mediated cyclizations are important transformations in a natural product total synthesis. The Pauson-Khand reaction, particularly powerful for establishing cyclopentenone-containing structures, is distinguished as one of the most attractive annulation processes routinely employed in synthesis campaigns. This review covers Co, Rh, and Pd catalyzed Pauson-Khand reaction and summarizes its strategic applications in total syntheses of structurally complex natural products in the last five years. Additionally, the hetero-Pauson-Khand reaction in the synthesis of heterocycles will also be discussed. Focusing on the panorama of organic synthesis, this review highlights the strategically developed Pauson-Khand reaction in fulfilling total synthetic tasks and its synthetic attractiveness is aimed to be illustrated.
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4

Hätzelt, André, and Sabine Laschat. "One-pot sequential Pauson–Khand reaction – transfer hydrogenation." Canadian Journal of Chemistry 80, no. 10 (October 1, 2002): 1327–30. http://dx.doi.org/10.1139/v02-172.

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The Pauson–Khand reaction of norbornene (1) and phenylacetylene (2) and subsequent RuCl2(PPh3)3-catalyzed transfer hydrogenation of the resulting enone (3) can be carried out in a one-pot sequence if the base is added after an induction period. The desired ketones (4a, 4b) were obtained in good yield as a mixture of diastereomers (diastereomeric ratio (dr.) 58:42). The relative rates of both the Pauson-Khand reaction and the transfer hydrogenation are decreased by a factor of 2 in the sequence, as compared with the isolated reactions.Key words: Pauson–Khand reaction, transfer hydrogenation.
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5

Escorihuela, Jorge, Daniel M. Sedgwick, Alberto Llobat, Mercedes Medio-Simón, Pablo Barrio, and Santos Fustero. "Pauson–Khand reaction of fluorinated compounds." Beilstein Journal of Organic Chemistry 16 (July 14, 2020): 1662–82. http://dx.doi.org/10.3762/bjoc.16.138.

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The Pauson–Khand reaction (PKR) is one of the key methods for the construction of cyclopentenone derivatives, which can in turn undergo diverse chemical transformations to yield more complex biologically active molecules. Despite the increasing availability of fluorinated building blocks and methodologies to incorporate fluorine in compounds with biological interest, there have been few significant advances focused on the fluoro-Pauson–Khand reaction, both in the inter- and intramolecular versions. Furthermore, the use of vinyl fluorides as olefinic counterparts had been completely overlooked. In this review, we collect the advances both on the stoichiometric and catalytic intermolecular and intramolecular fluoro-Pauson–Khand reaction, with special attention to the PKR of enynes containing a fluoride moiety.
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6

García-Lacuna, Jorge, Maialen Alonso, Gema Domínguez, and Javier Pérez Castells. "Study of the Pauson–Khand reaction in flow over alkynylphenyl vinyl ethers: towards the synthesis of tricyclic multisubstituted benzofurans." RSC Advances 12, no. 12 (2022): 7313–17. http://dx.doi.org/10.1039/d2ra01062c.

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7

García-Lacuna, Jorge, Gema Domínguez, Jaime Blanco-Urgoiti, and Javier Pérez-Castells. "Synthesis of treprostinil: key Claisen rearrangement and catalytic Pauson–Khand reactions in continuous flow." Organic & Biomolecular Chemistry 17, no. 43 (2019): 9489–501. http://dx.doi.org/10.1039/c9ob02124h.

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8

Manton, Jennifer C., Florian J. R. Cerpentier, Emma C. Harvey, Ian P. Clark, Gregory M. Greetham, Conor Long, and Mary T. Pryce. "Photochemical or electrochemical bond breaking – exploring the chemistry of (μ2-alkyne)Co2(CO)6 complexes using time-resolved infrared spectroscopy, spectro-electrochemical and density functional methods." Dalton Transactions 48, no. 39 (2019): 14642–52. http://dx.doi.org/10.1039/c9dt03006a.

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9

Zhao, Mi-Na, Ying Zhang, Ning Ge, Le Yu, Shun Wang, Zhi-Hui Ren, and Zheng-Hui Guan. "A Rh(iii)-catalyzed regioselective intermolecular oxa-Pauson–Khand reaction of alkynes, arylboronic acids and CO to form butenolides." Organic Chemistry Frontiers 7, no. 5 (2020): 763–67. http://dx.doi.org/10.1039/c9qo01486a.

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10

Chirkin, Egor, Chouaha Bouzidi, and François-Hugues Porée. "Tungsten-Promoted Hetero-Pauson–Khand Cycloaddition: Application to the Total Synthesis of (–)-Allosecurinine." Synthesis 51, no. 09 (February 18, 2019): 2001–6. http://dx.doi.org/10.1055/s-0037-1612063.

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Herein, we report a concise enantioselective synthesis of (–)-allosecurinine, a tetracyclic Securinega alkaloid featuring an α,β-unsaturated γ-lactone moiety. Starting from inexpensive and readily available trans-l-hydroxyproline, our strategy entails a rare late-stage [2+2+1]-hetero-Pauson–Khand cycloaddition between a ketone and an alkyne as the key complexity-generating step to rapidly install the CD-ring system. The reported W(CO)6-promoted intramolecular cyclization provides the first example of a tungsten-mediated hetero-Pauson–Khand reaction. This approach to the strained bicyclic CD motif present in ­allosecurinine provides some insights into the boundaries of this potentially powerful methodology that might be further extended to other butenolide-containing natural products.
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11

Wang, Jian-Shu, Qi Wang, Yiwen Zhu, Qian Gao, Jun Ying, and Xiao-Feng Wu. "Cobalt-catalyzed carbonylative cycloaddition of substituted diynes to access complexed polycyclic compounds." Organic Chemistry Frontiers 8, no. 15 (2021): 4188–91. http://dx.doi.org/10.1039/d1qo00725d.

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12

Salam, Abdus, Sayan Ray, Md Abu Zaid, Dileep Kumar, and Tabrez Khan. "Total syntheses of several iridolactones and the putative structure of noriridoid scholarein A: an intramolecular Pauson–Khand reaction based one-stop synthetic solution." Organic & Biomolecular Chemistry 17, no. 28 (2019): 6831–42. http://dx.doi.org/10.1039/c9ob00855a.

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A general synthetic strategy featuring a diastereoselective intramolecular Pauson–Khand reaction (IPKR) and some tactical synthetic manoeuvres to access ten iridoids in a stereocontrolled manner is delineated.
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13

Lamberto, Massimiliano. "Synthesis of tricyclic indolizidines from ethyl isocyanoacetate." Heterocyclic Communications 21, no. 3 (June 1, 2015): 153–57. http://dx.doi.org/10.1515/hc-2015-0047.

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AbstractTricyclic indolizidines were synthesized in good yields from commercially available ethyl isocyanoacetate by a novel sequential alkylation, thiol-mediated radical cyclization, N-alkylation, and microwave-assisted Pauson-Khand reaction.
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14

León, Thierry, and Elena Fernández. "The Pauson–Khand reaction using alkynylboronic esters: solving a long-standing regioselectivity issue." Chemical Communications 52, no. 60 (2016): 9363–66. http://dx.doi.org/10.1039/c6cc04717c.

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The first intermolecular Pauson–Khand reaction, conducted using internal alkynylboronic esters, allows the installation of the boronic ester moiety at the β-position of the cyclopentenone with total regio- and stereoselectivity.
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15

Heravi, Majid M., and Leila Mohammadi. "Application of Pauson–Khand reaction in the total synthesis of terpenes." RSC Advances 11, no. 61 (2021): 38325–73. http://dx.doi.org/10.1039/d1ra05673e.

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The Pauson–Khand reaction (PKR) is a formal [2 + 2 + 1] cycloaddition involving an alkyne, an alkene and carbon monoxide mediated by a hexacarbonyldicobaltalkyne complex to yield cyclopentenones in a single step.
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16

Marco-Contelles, José, and Juliana Ruiz. "Iridoids from Carbohydrates via Pauson–Khand Cyclopentane Annulation Mediated Strategies: Preliminary Studies." Journal of Chemical Research 23, no. 4 (April 1999): 260–61. http://dx.doi.org/10.1177/174751989902300407.

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The Pauson–Khand reaction on suitable carbohydrate derivatives obtained from L-arabinose gives annulated pyranosides that can be transformed into advanced synthetic intermediates for the synthesis of iridoid aglycones. Preliminary studies towards this end are described.
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17

Krafft, Marie E., James A. Wright, and Llorente VR Boñaga. "Pauson–Khand reactions in water." Canadian Journal of Chemistry 83, no. 6-7 (June 1, 2005): 1006–16. http://dx.doi.org/10.1139/v05-112.

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We have investigated the cobalt mediated Pauson–Khand (PK) reaction in water. In the presence of detergents and surfactants, Co2(CO)8 and Co4(CO)12 are effective under aqueous-phase, thermal PK reactions. In a water–Triton®X-100 medium, Co4(CO)12 is catalytically active. Further, dicobalthexacarbonyl complexes of alkynes and enynes undergo effective cyclization under thermal (70 °C) and NMO-promoted conditions. The oxidative nature of the latter conditions inhibits the reductive PK reaction. In all protocols, moderate to excellent yields of the cycloadducts are obtained. Substrates that are prone to hydrolysis, such as acetals, highly activated carboxylic acid derivatives, and those bearing propargylic heteroatom groups are tolerated under appropriate conditions. Finally, the more challenging intermolecular cycloadditions can also be easily achieved under aqueous conditions.Key words: alkyne, cycloaddition, green chemistry, Pauson–Khand reaction, water.
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18

Teng, Qi, Dong Chen, Chen-Ho Tung, and Zhenghu Xu. "Asymmetric synthesis of tricyclic 6,5,5-fused polycycles by the desymmetric Pauson–Khand reaction." Organic Chemistry Frontiers 9, no. 6 (2022): 1680–85. http://dx.doi.org/10.1039/d1qo01878g.

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A new rhodium(I)–BINAP-catalyzed enantioselective desymmetric Pauson–Khand (PK) reaction of prochiral 1,6-enynes with CO has been developed. Diverse tricyclic 6,5,5-fused bowl type polycycles were synthesized in one step with a single diastereomer.
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19

Lang, Xian-Dong, Fei You, Xing He, Yi-Chen Yu, and Liang-Nian He. "Rhodium(i)-catalyzed Pauson–Khand-type reaction using formic acid as a CO surrogate: an alternative approach for indirect CO2 utilization." Green Chemistry 21, no. 3 (2019): 509–14. http://dx.doi.org/10.1039/c8gc03933j.

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As a bridging molecule for the conversion of CO2 to CO, formic acid is successfully applied to rhodium-catalyzed carbo- and hetero-Pauson–Khand-type reactions, affording moderate to high yields of bicyclic cyclopentenones.
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20

Cabré, Albert, Xavier Verdaguer, and Antoni Riera. "Ethylene Glycol Assisted Intermolecular Pauson–Khand Reaction." Synthesis 49, no. 17 (April 27, 2017): 3945–51. http://dx.doi.org/10.1055/s-0036-1588813.

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The use of ethylene glycol as additive in the N-oxide-promoted intermolecular Pauson–Khand reaction (PKR) has been studied. The addition of 15% ethylene glycol to the reaction mixture consistently increased (from 20% up to 2–4-fold) the reaction yields.
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21

Becheanu, Armand, Thomas Bell, Sabine Laschat, Angelika Baro, Wolfgang Frey, Nelli Steinke, and Peter Fischer. "Synthesis of Pentalene Systems Employing a Sequence of Pauson-Khand Reaction, Michael Reaction, and Desilylation." Zeitschrift für Naturforschung B 61, no. 5 (May 1, 2006): 589–96. http://dx.doi.org/10.1515/znb-2006-0514.

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The utility of cyclopentadiene (4) in intermolecular Pauson-Khand reactions was investigated. Subsequently, a 1,4-addition of lithium organocuprates was carried out followed by desilylation. This synthetic concept allows the preparation of β -functionalized bicyclo[3.3.0]octane derivatives 1a - c in only three steps in total yields up to 53%.
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22

Serrano Martín, Carlos. "Las velocidades del periodismo en el cine: ocho filmes sobre Slow Journalism." Revista de Comunicación de la SEECI 55 (April 8, 2022): 101–20. http://dx.doi.org/10.15198/seeci.2022.55.e745.

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En estas líneas veremos cómo ha reflejado el séptimo arte, mediante seis películas, el periodismo pausado. Si presentamos y damos a conocer trabajos cinematográficos en los que el periodismo lucha por encontrar nuevas formas de narrar la realidad, y ofrecer a la audiencia un material informativo de mayor calidad, el público desarrollará con el tiempo una visión más optimista del periodismo. De esta forma, los medios de comunicación se ganarán de nuevo el respeto de la audiencia y el consumidor volverá a confiar en la profesión periodística.
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23

Inagaki, Fuyuhiko, Naoya Itoh, Yujiro Hayashi, Yumi Matsui, and Chisato Mukai. "Rh(I)-catalyzed intramolecular [2 + 2 + 1] cycloaddition of allenenes: Construction of bicyclo[4.3.0]nonenones with an angular methyl group and tricyclo[6.4.0.01,5]dodecenone." Beilstein Journal of Organic Chemistry 7 (April 7, 2011): 404–9. http://dx.doi.org/10.3762/bjoc.7.52.

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The [RhCl(CO)dppp]2-catalyzed intramolecular carbonylative [2 + 2 + 1] cycloaddition of allenenes was developed to prepare bicyclo[4.3.0]nonenones possessing a methyl group at the ring junction, which is difficult to achieve by the Pauson–Khand reaction of the corresponding enynes. This method also provided a new procedure for the construction of the tricyclo[6.4.0.01,5]dodecenone framework in a satisfactory yield.
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24

Delgado Butrón, Leonidas. "Profesor Alberto Guzmán Barrón (1904 - 1988) Semblanza." Anales de la Facultad de Medicina 57, no. 4 (April 7, 2014): 293. http://dx.doi.org/10.15381/anales.v57i4.4901.

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Las instituciones se perennizan en el tiempo, mientras que los seres humanos afrontamos un inexorable carácter cíclico; este hecho hace que hoy esté ocupando estas páginas una semblanza del otrora distinguido y ejemplar Maestro de la Facultad de Medicina de San Fernando: doctor Alberto Guzmán Barrón; semblanza escrita con el reconocimiento del discípulo, el respeto del colega y el afecto del amigo, que lo recuerda con su hacer parsimonioso, sus oportunos y pasajeros ataques de «sordera», su hablar pausado y tránquilo, demostrando siempre serenidad aun en momentos difíciles.
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25

SIMÓN CASTELLANO, Pere. "La modernización tecnológica de la Administración de Justicia." RVAP 92, no. 92 (April 30, 2012): 295–317. http://dx.doi.org/10.47623/ivap-rvap.92.2012.08.

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LABURPENA: Espainiako Justizia Administrazioa pausoz pauso egokitzen joan da informazio eta komunikazio teknologia berrien garapenak (IKT) eskatzen duen aldaketa girora. Teknologiak aurrera egin ahala, zabalagoak dira eskura ditugun aukerak. Epaitegien eremuari gagozkiola, teknologien erabilerak gure justiziak pairatzen dituen gaitzetako batzuk konpontzen lagundu dezakete. Lan honetan, Espainian justizia modernizatzeko bidean egon den lege-oinarriaren eta borondate politikoaren bilakaera aztertuko dugu, eta oraindik orain indarrean jarri den 18/2011 Legearen indarguneei erreparatuko diegu —besteak beste, herritarrek Justizia Administrazioarekin harremanak elektronikoki izateko duten eskubidea—, bai eta konpontzeke dauden arazoak ere. Azkenik, Cyberjustice Laboratory zentroak eskaintzen dituen irakasbide nagusien laburpena egingo dugu, zentro hori aitzindaria baita egoitza judizialeko IKTen ikerketan. RESUMEN: La Administración de Justicia española se ha ido adaptando paulatinamente al cambio exigido por el desarrollo de las nuevas tecnologías de la información y de la comunicación (TIC). A mayor avance tecnológico mayores son las posibilidades que estas nos ofrecen; en el ámbito estrictamente judicial, su empleo puede ayudar a paliar algunos de los males endémicos de nuestra justicia. En este trabajo observaremos la evolución del sustrato legal y de la voluntad política por modernizar la justicia en España, apuntando los puntos fuertes de la reciente Ley 18/2011, entre los que sin duda se encuentra el reconocimiento del derecho del ciudadano a relacionarse electrónicamente con la Administración de Justicia, y la cuestiones pendientes. Finalmente, mostraremos un extracto de las principales lecciones a las que ha llegado el Cyberjustice Laboratory, centro pionero en el estudio de las TIC en sede judicial. ABSTRACT: Spanish Justice Administration has been gradually adapting to the change demanded by the development of new Information and Communication Technologies (ICTs). The more technological advance, the more chance these offer us. The use of ICTs in judicial context can help us to fix up some of the endemic problems of our justice. In this paper we observe the evolution of the legal substrate and the political decisions to modernize the justice in Spain, pointing out the strengths of the recent Law 18/2011 —the recognition of the right of citizens to interact electronically with the Administration of Justice— and the outstanding issues. Finally, we will show an extract of the main lessons that we could drawn from Cyberjustice Laboratory, pioneer in the study of ICT in Court.
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26

Barreiro Chancay, Pedro Isaac. "Esthelita." Folia Humanística 2, no. 1 (March 1, 2020): 50–54. http://dx.doi.org/10.30860/0062.

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Ambientado en una población rural de la zona costanera tropical del Ecuador, este pausado y conmovedor relato ubica al lector frente a las profundidades y las desesperanzas de un viejo, indestructible y único amor que una joven mujer con Síndrome de Down (Esthelita) ha guardado desde su niñez hacia un vecino de su misma edad (Vicente), quien ha debido alejarse definitivamente de su pueblo. Ella, además, ahora sufre los estragos de una leucemia que le hacen imposible soportar su soledad y sus dolores a pesar de los cuidados y de la solidaridad de sus padres y vecinos que la acompañan hasta su delirio final.
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27

Reyes García, Juan Carlos. "Inocencia, luz y muerte, La suma de las edades." Punto CUNORTE 1, no. 1 (January 1, 2015): 54–61. http://dx.doi.org/10.32870/punto.v1i1.4.

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¿Por qué esperamos recordar todo? ¿Por qué olvidamos lo que nos ha marcado: inocencia, juegos, lágrimas y silencios? Es el olvido la condena que el tiempo nos impone? El remedio contra esa sentencia sería con certeza atesorar en fragmentos de memoria pequeñas piezas de un todo que a su vez repliquen en formas, sonidos, momentos pausados, sin aliento. ¿Dónde huyen esos instantes cuando la cordura parece hacerse polvo? Y si eso es todo lo que existe? Un gran sorbo que asemeja la vida, para todo, para la eternidad misma que devoramos, aún para ello hay tiempo, la mente recorre laberintos interminables. Busco, busco tocando sin mirar atrás.
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Paz Sandoval, M. Ángeles. "Sandwiches organometálicos." Educación Química 15, no. 4 (August 25, 2018): 404. http://dx.doi.org/10.22201/fq.18708404e.2004.4.66165.

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<span>El desarrollo de la química organometálica de los metales de transición se debe en buena medida al descubrimiento del ferroceno [bis(ciclopentadienil) hierro] en 1951, molécula con enlaces metalcarbono. Aunque la naturaleza del enlace del ciclopentadienilo al hierro no fue apreciada de inmediato por los autores Kealy y Pauson ( Nature, 1951) [recibido el 7 de agosto de 1951], su descubrimiento fue sin lugar a dudas uno de los eventos más importantes que estimularon los avances subsecuentes en este campo...</span>
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29

Beingolea Del Carpio, José. "José García Bryce." Devenir - Revista de estudios sobre patrimonio edificado 7, no. 14 (October 31, 2020): 5–8. http://dx.doi.org/10.21754/devenir.v7i14.1044.

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Lo conocimos en 1972 como profesor de Historia de la Arquitectura 1 en la UNI, con su pausado hablar, blanca cabellera y sutiles anteojos, reveladores de su dedicación lectora y proyectual, conduciéndonos por Oriente, Grecia y Roma; luego lo tuvimos hablándonos del Renacimiento, el Barroco y el Rococó, estimulando nuestra vocación por la historia. Más adelante lo reencontramos en el curso de Arquitectura peruana, estableciendo los vínculos entre la arquitectura europea y la realizada en el Perú bajo su influjo, pasando por los cambios ocurridos en la República llegando hasta el periodo moderno. Ahí nació nuestro interés por entender y explicar el complejo proceso cultural desprendido de la Conquista en adelante.
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Navós, Óscar Telmo. "Emprendedorismo del futuro: Desafíos de la investigación en las universidades." Horizontes Empresariales 17, no. 2 (November 30, 2018): 72–80. http://dx.doi.org/10.22320/hem.v17i2.3455.

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Los paradigmas de los modelos de negocios están cambiando abruptamente. Existen dos curvas que se distancian cada vez más: una con un crecimiento veloz que representa al cambio tecnológico, y otra con un aumento más pausado: la capacidad de adopción (y de adaptación) de las personas y de las empresas a ese ritmo de cambio. Habría que enfocar a la Universidad hacia la innovación, redefiniendo las estrategias de investigación a los efectos de poder brindar soluciones a nuevos requerimientos aplicando nuevos conocimientos científicos y tecnológicos a realidades disruptivas para el actual y futuro contexto emprendedor. El presente artículo tiene como objetivo describir algunas propuestas de investigación en Universidades que impacten sobre la capacidad competitiva del ecosistema emprendedor.
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31

Sakagami, Yukari, Naoki Kondo, Yuki Sawayama, Hiroyuki Yamakoshi, and Seiichi Nakamura. "Total Syntheses of Marrubiin and Related Labdane Diterpene Lactones." Molecules 25, no. 7 (April 1, 2020): 1610. http://dx.doi.org/10.3390/molecules25071610.

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Total syntheses of the labdane diterpene lactones marrubiin, marrulibacetal, desertine, marrulibacetal A, marrubasch F, cyllenine C, marrulanic acid, and marrulactone are described. The trans-decalin moiety of these molecules was constructed in a stereoselective manner by a Pauson-Khand reaction, and the resultant cyclopentenone was oxidatively cleaved for formation of the lactone ring. Elongation of the side chain at C9 was achieved by an epoxide-opening reaction with a variety of nucleophiles, and the functional group manipulations completed the syntheses of these natural products. Stereochemistries of desertine could be established by the transformations.
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32

Shibata, Takanori. "Catalytic Pauson-Khand-(Type) Reactions." Journal of Synthetic Organic Chemistry, Japan 61, no. 9 (2003): 834–42. http://dx.doi.org/10.5059/yukigoseikyokaishi.61.834.

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33

Krafft, Marie E., Carmelinda A. Juliano, Ian L. Scott, Colin Wright, and Michael D. McEachin. "The directed Pauson-Khand reaction." Journal of the American Chemical Society 113, no. 5 (February 1991): 1693–703. http://dx.doi.org/10.1021/ja00005a038.

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34

Iqbal, Mazhar, Nicola Vyse, Jérôme Dauvergne, and Paul Evans. "Microwave promoted Pauson–Khand reactions." Tetrahedron Letters 43, no. 44 (October 2002): 7859–62. http://dx.doi.org/10.1016/s0040-4039(02)01912-3.

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35

Krafft, M. E., A. M. Wilson, O. A. Dasse, B. Shao, Y. Y. Cheung, Z. Fu, L. V. R. Bonaga, and M. K. Mollman. "The Interrupted Pauson−Khand Reaction." Journal of the American Chemical Society 118, no. 25 (January 1996): 6080–81. http://dx.doi.org/10.1021/ja9606541.

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36

Rajesh, Thotapally, and Mariappan Periasamy. "Amine Induced Pauson-Khand Reaction." Tetrahedron Letters 39, no. 1-2 (January 1998): 117–18. http://dx.doi.org/10.1016/s0040-4039(97)10464-6.

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37

Wender, Paul A., Nicole M. Deschamps, and Gabriel G. Gamber. "The Dienyl Pauson–Khand Reaction." Angewandte Chemie International Edition 42, no. 16 (April 25, 2003): 1853–57. http://dx.doi.org/10.1002/anie.200350949.

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38

Werner, Helmut. "Peter Ludwig Pauson (1925-2013)." Angewandte Chemie 126, no. 13 (February 7, 2014): 3375. http://dx.doi.org/10.1002/ange.201400432.

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39

Werner, Helmut. "Peter Ludwig Pauson (1925-2013)." Angewandte Chemie International Edition 53, no. 13 (February 7, 2014): 3309. http://dx.doi.org/10.1002/anie.201400432.

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40

Wender, Paul A., Nicole M. Deschamps, and Travis J. Williams. "Intermolecular Dienyl Pauson–Khand Reaction." Angewandte Chemie International Edition 43, no. 23 (June 7, 2004): 3076–79. http://dx.doi.org/10.1002/anie.200454117.

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41

Gibson, Susan E., and Nello Mainolfi. "The Intermolecular Pauson-Khand Reaction." Angewandte Chemie International Edition 44, no. 20 (May 13, 2005): 3022–37. http://dx.doi.org/10.1002/anie.200462235.

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42

Chupak, Louis S. "ChemInform Abstract: Pauson-Khand Reaction." ChemInform 42, no. 18 (April 7, 2011): no. http://dx.doi.org/10.1002/chin.201118222.

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43

Wender, Paul A., Nicole M. Deschamps, and Travis J. Williams. "Intermolecular Dienyl Pauson–Khand Reaction." Angewandte Chemie 116, no. 23 (June 7, 2004): 3138–41. http://dx.doi.org/10.1002/ange.200454117.

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44

Gibson, Susan E., and Nello Mainolfi. "Die intermolekulare Pauson-Khand-Reaktion." Angewandte Chemie 117, no. 20 (May 13, 2005): 3082–97. http://dx.doi.org/10.1002/ange.200462235.

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45

RAUTENSTRAUCH, V. "ChemInform Abstract: Pauson-Khand Reaction." ChemInform 28, no. 48 (August 2, 2010): no. http://dx.doi.org/10.1002/chin.199748306.

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46

Verdaguer, Xavier, Antoni Riera, and Albert Cabré. "Catalytic Pauson–Khand Reaction in Ethylene Glycol–Toluene: Activity­, Selectivity, and Catalyst Recycling." Synthesis 50, no. 19 (July 5, 2018): 3891–96. http://dx.doi.org/10.1055/s-0037-1610441.

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The use of ethylene glycol (15% v/v in toluene) as additive in the catalytic Pauson–Khand reaction (PKR) is reported. In most cases both the yield and selectivity were enhanced compared to standard protocols. Moreover, the immiscibility of ethylene glycol in toluene allowed recycling of the catalyst (which remained mainly in the ethylene glycol). The recycling allowed catalyst loading to be reduced to only 3 mol%. A gram-scale reaction was also performed, allowing the use of only 1 mol% of Co2(CO)8, the lowest amount reported so far in intermolecular cobalt-catalyzed PKR.
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47

Guitart Vilches, Miguel. "El filtro como límite emocional: el modelo japonés como espacio de relaciones." Constelaciones. Revista de Arquitectura de la Universidad CEU San Pablo, no. 4 (May 1, 2016): 15–27. http://dx.doi.org/10.31921/constelaciones.n4a1.

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Los filtros funcionan como barreras permeables o como elementos de relación entre un exterior que enlaza con lo real, lo objetivo, lo inmediato, y un interior que nos conduce a la evocación, lo subjetivo y lo pausado. Es en los filtros donde dicha ruptura o encuentro deviene en un espacio propio, un espacio de transición. Un filtro establece por tanto un lugar nuevo de relaciones con un espesor variable que puede oscilar desde un fino plano translúcido de entidad física casi inestimable hasta un elemento de corporeidad mucho más categórica y definitiva. La construcción de una perforación o entramado de esta condición supone la creación de una envolvente que facilita una actitud reflexiva con la que se estimula la propia conciencia en el medio construido por medio de los sentidos.
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48

Innocenti, Riccardo, Elena Lenci, Gloria Menchi, and Andrea Trabocchi. "Combination of multicomponent KA2 and Pauson–Khand reactions: short synthesis of spirocyclic pyrrolocyclopentenones." Beilstein Journal of Organic Chemistry 16 (February 12, 2020): 200–211. http://dx.doi.org/10.3762/bjoc.16.23.

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The Cu-catalyzed multicomponent ketone–amine–alkyne (KA2) reaction was combined with a Pauson–Khand cycloaddition to give access of unprecedented constrained spirocyclic pyrrolocyclopentenone derivatives following a DOS couple-pair approach. The polyfunctional molecular scaffolds were tested on the cyclopentenone reactivity to further expand the skeletal diversity, demonstrating the utility of this combined approach in generating novel spiro compounds as starting material for the generation of chemical libraries. The chemoinformatics characterization of the newly-synthesized molecules gave evidence about structural and physicochemical properties with respect to a set of blockbuster drugs, and showed that such scaffolds are drug-like but more spherical and three-dimensional in character than the drugs.
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49

Gibson, Susan E., Karina A. C. Kaufmann, Jennifer A. Loch, and Ayako Miyazaki. "Metal carbonyl complexes and chirality." Pure and Applied Chemistry 80, no. 5 (January 1, 2008): 903–11. http://dx.doi.org/10.1351/pac200880050903.

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A study of the Pauson-Khand reaction (PKR) based on Co2(CO)8 and binap has revealed that a key precatalyst is (binap)Co2(CO)6, and that alkynes add to this species to generate isomers that interconvert under typical PKR conditions. A 31P NMR study of (binap)(N-(prop-2-enyl)-N-(prop-2-ynyl)-p-toluenesulfonamide)Co2(CO)4 revealed that heating this species gives rise to an unexpected cobalt hydride species (binap)Co(CO)2H together with (binap)Co2(CO)6. Observation of a PKR reaction by 31P NMR spectroscopy revealed that the hydride species is generated during the course of the reaction.
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50

Leitner, W., J. L. Muller, and A. Rickers. "Raney Cobalt Catalyzed Pauson-Khand Reaction." Synfacts 2007, no. 5 (May 2007): 0554. http://dx.doi.org/10.1055/s-2007-968479.

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