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Dissertations / Theses on the topic 'Prolinamid'

Author: Grafiati
Published: 24 April 2022
Last updated: 30 July 2025

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1

Viózquez, Cámara Santiago Fidel. "BINAM-prolinamidas como organocatalizadores en síntesis asimétrica." Doctoral thesis, Universidad de Alicante, 2010. http://hdl.handle.net/10045/17371.

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En la presente memoria se describe la síntesis y aplicación de varios organocatalizadores quirales en reacciones aldólicas y adición Michael. Para ello se describe la síntesis de distintos compuestos derivados de 1,1'- Binaftil-2,2'-diamina (Binam) y prolina. Dichos compuestos se aplican en la reacción aldólica intermolecular sin disolvente empleando aldehídos como electrófilos. En estas condiciones se llega a obtener excesos enantioméricos de hasta el 98%. Además, se estudia la recuperación del catalizador del medio de reacción. También se detalla el estudio llevado a cabo sobre el mecanismo
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2

Monge, Marcet Amalia. "Silices hybrides dérivées de prolinamide et des sels d’imidazoliums : applications en catalyse." Thesis, Montpellier, Ecole nationale supérieure de chimie, 2011. http://www.theses.fr/2011ENCM0007.

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La récupération et le recyclage des systèmes catalytiques dans la formation de liaisons carbone-carbone reste un défi scientifique important pour des raisons économiques et environnementales. Leur immobilisation sur des polymères insolubles permet une séparation simple par filtration et une purification facile des composés finaux. Les organosilices sont des gels de silice modifiés par des fragments organiques. Elles ont été appliquées comme supports pour une grande variété de catalyseurs. Dans ce travail, différentes organosilices ont été préparées par le procédé sol-gel ou par des méthodes de
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3

Navarro, Moles Fernando Javier. "Reacciones aldólicas enantioselectivas con α-oxoaldehídos organocatalizadas por prolinamidas derivadas de Binam". Doctoral thesis, Universidad de Alicante, 2014. http://hdl.handle.net/10045/39870.

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En el año 2003, nuestro grupo de investigación comenzó a trabajar en el campo de la organocatálisis haciendo uso de prolinamidas como catalizadores. En el presente trabajo se muestra la síntesis y aplicación de varios organocatalizadores quirales derivados de 1,1'-binaftil-2,2'-diamina (Binam) y prolinamidas en la reacción aldólica directa de α-oxoaldehídos como aceptores tales como ácido glioxílico, glioxilato de etilo, metilglioxal y 2,2-dimetoxiacetaldehído, con varios tipos de cetonas y aldehídos como donores, con el fin de obtener derivados de γ-oxo-α hidroxicarboxílicos con un alto nivel
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4

Akkoca, Hasan Ufuk. "Synthesis Of Bifunctional 2-aminodmap/prolinamide Organocatalysts And Their Use In Asymmetric Michael Reaction To Afford Warfarin." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12613984/index.pdf.

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In the first part of this thesis, the construction of the novel bifunctional proline-(1R,2R)-2-aminoDMAP organocatalyst backbone is described. Target compound has both Lewis base and Br&oslash<br>nsted acid catalaphoric sites. The Lewis base site is synthesized via selective mono-N-pyridilization of trans-(1R,2R)-cyclohexane-1,2-diamine by Cu catalysis and Br&oslash<br>nsted acid site is subsequently introduced by anchoring L-proline unit. In the second part, catalytic activities of organocatalysts are tested in asymmetric Michael addition reaction between a cyclic 1,3-dicarbonyl compound 4-hy
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5

Mitsui, Kazuhiko. "Dendritic Effects in Homogeneous Asymmetric Catalysis." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1245200227.

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6

Chassillan, Louis. "New Chiral Bifunctional Organocatalysts : Synthesis and Application in Enantioselective Reactions Under Batch and Continuous-Flow Conditions." Thesis, université Paris-Saclay, 2022. http://www.theses.fr/2022UPASF027.

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Au cours des dernières années, l’organocatalyse asymétrique a connu un engouement sans précédent et de nombreux catalyseurs organiques ont été synthétisés dans le but d’effectuer des réactions plus rapides et plus sélectives. Cependant, étant donné la demande croissante de molécules chirales dans l’industrie, il demeure crucial de développer de nouveaux outils afin de rendre leur production plus efficace. Pour ce faire, l’utilisation de la catalyse bifonctionnelle apparait comme une évidence du fait de sa capacité à activer simultanément le nucléophile et l’électrophile et ainsi permettre un m
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7

Prause, Felix [Verfasser], and Matthias [Akademischer Betreuer] Breuning. "5-Cis-substituierte Prolinamine : Modulare Synthese und Anwendung in der enantioselektiven Katalyse / Felix Prause ; Betreuer: Matthias Breuning." Bayreuth : Universität Bayreuth, 2017. http://d-nb.info/1136659137/34.

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8

Guevara, Hornedo Mar��a del Pilar. "Dise��o y s��ntesis de una nueva prolinamida quiral y su aplicaci��n como organocatalizador en la reacci��n ald��lica." Thesis, Universidad de las Am��ricas Puebla, 2012. http://catarina.udlap.mx/u_dl_a/tales/documentos/lqu/guevara_h_md/.

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El presente proyecto de tesis desarrolla un nuevo organocatalizador del tipo prolinamida, adem��s posee simetr��a C2, este factor hipot��ticamente aumenta la enantioselectividad de los organocatalizadores. Se prob�� su poder organocatal��tico en la reacci��n ald��lica modelo, la condensaci��n de 4-nitrobenzaldeh��do con acetona, obteni��ndose diversos resultados (Ver Cap��tulo 5 RESULTADOS Y DISCUSI��N). Entre las condiciones que destacan son el uso del organocatalizador (1) dise��ado y sintetizado en este proyecto en una concentraci��n al 10 mol%, 1 equivalente de 4- nitrobenzaldeh��do, 5 equ
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9

Gut, Bartosz. "Synteza aldoz na drodze enancjoselektywnej reakcji aldolowej." Praca doktorska, 2015. https://ruj.uj.edu.pl/xmlui/handle/item/45007.

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10

Hita, López María del Carmen. "BINAM-prolinamidas: nuevos organocatalizadores quirales en reacciones aldólicas." Doctoral thesis, 2007. http://hdl.handle.net/10045/14373.

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En la presente memoria se describe la síntesis y aplicaciones de nuevos organocatalizadores derivados de B1NAM y prolina en reacciones aldólicas. Se ha puesto a punto la síntesis de las diferentes prolinamidas derivadas de BINAM y prolina, discutiendo su estructura, relación entre ellas, así como su recuperación. Se ha estudiado la actividad catalítica de los nuevos catalizadores BINAM-prolinamidas en condensación aldólica directa entre aldehidos y cetonas alifáticas, en diferentes disolventes comparando con L-Pro. Las prolinamidas han sido recuperadas por técnicas de extracción sencillas, pud
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11

Chien, Chieh, and 簡婕. "Preparation of L-Prolinamide Functionalized Mesoporous SBA-15 as Catalysts for Asymmetric Aldol Addition." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/40398807577067401135.

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碩士<br>國立臺灣大學<br>化學研究所<br>100<br>Prolinamide, prepared from proline and aromatic amine, has been found to be an efficient organocatalyst for asymmetric aldol reaction, which is a key carbon–carbon bond-forming reaction in nature and in the repertoire of the synthetic chemist. For the purpose of easy separation from the reaction mixture and reuses of the catalyst, prolinamide organocatalysts were immobilized on mesoporous silica by covalent bonding. In the present study, thiol group functionalized SBA-15 ( SH-SBA-15 ) was prepared by one-pot co-condensation of tetraethyl orthosilicate ( TEOS ) a
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12

Tsai, Wen-Kuan, та 蔡文寬. "Asymmetric Mannich Reaction of α-Silyloxyacetone with Imines Catalyzed by Camphorsulfonamide-Derived 4-TBSO-L-Prolinamide". Thesis, 2014. http://ndltd.ncl.edu.tw/handle/syt4qk.

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13

Wu, Sin Yan, та 吳欣宴. "Asymmetric Mannich Reactions of α-Silyloxyethanal with Imines Catalyzed by Camphorsulfonamide-Dericed 4-TIPSO-L-Prolinamide". Thesis, 2016. http://ndltd.ncl.edu.tw/handle/83688013416053571726.

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碩士<br>國立清華大學<br>化學系<br>104<br>This thesis deals with the use of organocatalyst 75b, comprising of trans-4-TIPSO-L-proline and N-phenyl camphorsulfonamide skeletons, in the asymmetric Mannich reaction of α-silyloxyethanal to N-tosylimines, affording syn 1,2-amino alcohols with reasonable to good chemical yield (31% to 91%), slight to moderate diastereoselectivities (52:48 to 85:15) and moderate to good enatioselectivities (89 to >99% ee of the trans 89 products). An extensive and through screening on the solvents, additives and aldehyde equivalents identified that 5 mol % of the catalyst and 6
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14

Tu, Yu-Wei, and 涂育瑋. "Asymmetric Amination Reactions of Aldehydes with Dibenzyl Azodicarboxylate Catalyzed by Camphor-Derived 4-TBSO-L-Prolinamide." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/232b83.

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碩士<br>國立清華大學<br>化學系所<br>106<br>This thesis reported the application of camphor-derived-(2S,4R)-4- OTBS-L-prolinamide as a chiral organo catalyst in the asymmetric amination reaction of aldehydes with dibenzyl azodicarboxylate. We found that 1.0 mol% catalyst 30 was able to catalyze the asymmetric amination of aldehydes with dibenzyl azodicarboxylate without any additive to afford chiral amination adduct with up to 99% ee (R) in excellent yields.
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15

Cheng, Shun-Chu, and 鄭舜竹. "SBA-15 supported L-prolinamide as a heterogeneous enantioselective catalyst in aldol reaction between ketone and aldehyde." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/31068167991287989706.

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碩士<br>國立臺灣大學<br>化學研究所<br>102<br>A series of SBA-15 materials with different legnths of linker immobilized L-prolinamide catalysts were prepared by thiol-ene reaction. The materials were characterized with XRD, N2 sorption isotherm, IR spectroscopy and solid-state NMR techniques. These catalysts with chiral centers could be reused by simple filtration to separate from the products. The SBA-15 anchored L-prolinamide could catalyze asymmetric Aldol reaction between cyclohexanone with 4-nitrobenzaldehyde under mild condition. Factors which might affect the catalytic performance including the type
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16

Hsu, Chen-Kai, та 許宸愷. "Asymmetric Mannich Reactions of α-Silyloxyethanal with N-Benzoylimines Catalyzed by Camphorsulfonamide-Derived 4-TIPSO-L-Prolinamide". Thesis, 2018. http://ndltd.ncl.edu.tw/handle/s5s983.

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17

Chen, Yi-Ju, and 陳怡如. "The Study on Asymmetric Michael Addition Reaction of Ketones to Chalcones Catalyzed by Camphorsulfonamide-Derived (2S,4R)-4-Hydroxy-L-Prolinamide." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/r36ctc.

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碩士<br>國立清華大學<br>化學系<br>102<br>This thesis dealt with the synthesis and application of novel prolinamide-camphor organocatalysts that derived from the coupling of trans-4-hydroxy-L-proline and camphorsulfonamide. Organocatalyst 11d is proven to be an efficient catalyst for the asymmetric Michael reaction of ketone and a series of chalcone-derived. Treatment of cyclohexanone with chalcone- deriveds which have electron-withdrawing group using organocatalyst 11d provided the desired Michael products with high chemical yields (up to 97% yield), excellent diastereoselectivities (up to 99/1 dr) and h
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