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Journal articles on the topic 'Aza-Heterocycles- Synthesis'

Author: Grafiati

Published: 6 September 2023

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1

Chamberlain, Anna E. R., Kieran J. Paterson, Roly J. Armstrong, Heather C. Twin, and Timothy J. Donohoe. "A hydrogen borrowing annulation strategy for the stereocontrolled synthesis of saturated aza-heterocycles." Chemical Communications 56, no. 24 (2020): 3563–66. http://dx.doi.org/10.1039/d0cc00903b.

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2

Rulev, A. Yu, and A. R. Romanov. "Unsaturated polyfluoroalkyl ketones in the synthesis of nitrogen-bearing heterocycles." RSC Advances 6, no. 3 (2016): 1984–98. http://dx.doi.org/10.1039/c5ra23759a.

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3

Zonker, Benjamin, Ediz Duman, Heike Hausmann, Jonathan Becker, and Radim Hrdina. "[1,2]-Rearrangement of iminium salts provides access to heterocycles with adamantane scaffold." Organic & Biomolecular Chemistry 18, no. 26 (2020): 4941–45. http://dx.doi.org/10.1039/d0ob01156h.

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4

Singh, Deepak, and Hyun-Joon Ha. "Metal-free aza-Claisen type ring expansion of vinyl aziridines: an expeditious synthesis of seven membered N-heterocycles." Organic & Biomolecular Chemistry 17, no. 12 (2019): 3093–97. http://dx.doi.org/10.1039/c8ob03029d.

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5

Frontier, Alison J., Shukree Abdul-Rashed, and Connor Holt. "Alkynyl Prins and Alkynyl Aza-Prins Annulations: Scope and Synthetic Applications." Synthesis 52, no. 14 (2020): 1991–2007. http://dx.doi.org/10.1055/s-0039-1690869.

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This review focuses on alkynyl Prins and alkynyl aza-Prins cyclization processes, which involve intramolecular coupling of an alkyne with either an oxocarbenium or iminium electrophile. The oxocarbenium or iminium species can be generated through condensation- or elimination-type processes, to achieve an overall bimolecular annulation that enables the synthesis of both oxygen- and nitrogen-containing saturated heterocycles with different ring sizes and substitution patterns. Also discussed are cascade processes in which alkynyl Prins heterocyclic adducts react to trigger subsequent pericycli

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6

Gusar, N. I. "Synthesis of heterocycles by the aza-Wittig reaction." Russian Chemical Reviews 60, no. 2 (1991): 146–61. http://dx.doi.org/10.1070/rc1991v060n02abeh001036.

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7

Yang, Xu-Heng, Jian Huang, Fang Wang, et al. "Copper-catalyzed alkynylation/annulation cascades of N-allyl ynamides: regioselective access to medium-sized N-heterocycles." Organic Chemistry Frontiers 8, no. 1 (2021): 18–24. http://dx.doi.org/10.1039/d0qo00837k.

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A synthetic strategy based on sequential application of aza-Claisen rearrangement, C–H functionalization, C–N coupling and cyclization as key steps has been developed for the synthesis of 6-, 7-, 8-, and 9-membered rings N-heterocycles.

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8

Guin, Soumitra, Debashis Majee, and Sampak Samanta. "Unmasking the reverse reactivity of cyclic N-sulfonyl ketimines: multifaceted applications in organic synthesis." Chemical Communications 57, no. 72 (2021): 9010–28. http://dx.doi.org/10.1039/d1cc03439a.

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This feature article covers the recent status on the reactivities of α-alkyl cyclic N-sulfonyl ketimines as resourceful nucleophiles, targeting fused carbo- and heterocycles, aza-arenes etc. In addition, the mechanistic studies have been presented.

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9

Seath, Ciaran P., Kirsty L. Wilson, Angus Campbell, Jenna M. Mowat, and Allan J. B. Watson. "Synthesis of 2-BMIDA 6,5-bicyclic heterocycles by Cu(i)/Pd(0)/Cu(ii) cascade catalysis of 2-iodoaniline/phenols." Chemical Communications 52, no. 56 (2016): 8703–6. http://dx.doi.org/10.1039/c6cc04554e.

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A one-pot cascade reaction for the synthesis of 2-BMIDA 6,5-bicyclic heterocycles has been developed using Cu(i)/Pd(0)/Cu(ii) catalysis. The method provides efficient access to borylated indoles, benzofurans, and aza-derivatives, which can be difficult to access through alternative methods.

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10

Nguyen, Thi Thu Tram, Le Anh Nguyen, Quoc Anh Ngo, Marina Koleski, and Thanh Binh Nguyen. "The catalytic role of elemental sulfur in the DMSO-promoted oxidative coupling of methylhetarenes with amines: synthesis of thioamides and bis-aza-heterocycles." Organic Chemistry Frontiers 8, no. 7 (2021): 1593–98. http://dx.doi.org/10.1039/d0qo01654c.

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11

Zhang, Yong-Sheng, Xiang-Ying Tang, and Min Shi. "Unprecedented synthesis of aza-bridged benzodioxepine derivatives through a tandem Rh(ii)-catalyzed 1,3-rearrangement/[3+2] cycloaddition of carbonyltriazoles." Chem. Commun. 50, no. 100 (2014): 15971–74. http://dx.doi.org/10.1039/c4cc08339c.

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Rh(ii)-catalyzed novel tandem intramolecular cycloisomerizations of aldehydes or ketones with 1-sulfonyl 1,2,3-triazoles have been disclosed, providing a facile protocol to access a series of functionalized aza-bridged benzodioxepine heterocycles.

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12

Wang, Yan-Yan, Tuan-Jie Wang, Juan Chen, Chao-Yang Wang, and Jing Zhu. "Synthesis of Polycationic Aza-Belted Heterocyclic Iodomethane Salts." Advanced Science, Engineering and Medicine 11, no. 11 (2019): 1134–41. http://dx.doi.org/10.1166/asem.2019.2468.

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Novel belt shapes of a diazabicyclo[n,n,5.5]alkane center combined with double iodomethane salts were prepared in two steps by a reaction of phenylethylamine or 3,4-dimethoxyphenylethylamine with ortho-bis(chloromethyl)benzenes. The syntheses and characteristics of these polycationic systems containing aza-belt rings are described. Judicious choice of the reaction conditions allowed these polycationic heterocycles to be generated in good yields, and 1H and 13C nuclear magnetic resonance spectroscopy revealed a change in chemical shifts caused by interactions between the functional groups.

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13

Nayl, AbdElAziz A., Ashraf A. Aly, Wael A. A. Arafa, et al. "Azides in the Synthesis of Various Heterocycles." Molecules 27, no. 12 (2022): 3716. http://dx.doi.org/10.3390/molecules27123716.

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In this review, we focus on some interesting and recent examples of various applications of organic azides such as their intermolecular or intramolecular, under thermal, catalyzed, or noncatalyzed reaction conditions. The aforementioned reactions in the aim to prepare basic five-, six-, organometallic heterocyclic-membered systems and/or their fused analogs. This review article also provides a report on the developed methods describing the synthesis of various heterocycles from organic azides, especially those reported in recent papers (till 2020). At the outset, this review groups the synthet

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14

Balci, Metin. "Acyl Azides: Versatile Compounds in the Synthesis of Various Heterocycles." Synthesis 50, no. 07 (2018): 1373–401. http://dx.doi.org/10.1055/s-0036-1589527.

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Carbon–nitrogen bond formation is one of the most important reactions in organic chemistry. Various synthetic strategies for the generation of C–N bonds are described in the literature. For example, primary amines can be easily synthesized by the thermal decomposition of an acyl azide to an isocyanate, i.e. the Curtis rearrangement, followed by hydrolysis; the Curtius rearrangement has been used extensively. Furthermore, the advantage of the Curtius rearrangement is the isolation of acyl azides as well as the corresponding isocyanates. The isocyanates can be converted into various nitrogen-con

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15

Heredia-Moya, Jorge, Daniel A. Zurita, José Eduardo Cadena-Cruz, and Christian D. Alcívar-León. "Diaza-1,3-butadienes as Useful Intermediate in Heterocycles Synthesis." Molecules 27, no. 19 (2022): 6708. http://dx.doi.org/10.3390/molecules27196708.

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Many heterocyclic compounds can be synthetized using diaza-1,3-butadienes (DADs) as key structural precursors. Isolated and in situ diaza-1,3-butadienes, produced from their respective precursors (typically imines and hydrazones) under a variety of conditions, can both react with a wide range of substrates in many kinds of reactions. Most of these reactions discussed here include nucleophilic additions, Michael-type reactions, cycloadditions, Diels–Alder, inverse electron demand Diels–Alder, and aza-Diels–Alder reactions. This review focuses on the reports during the last 10 years employing 1,

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16

Lystsova, Ekaterina A., Ekaterina E. Khramtsova, and Andrey N. Maslivets. "Acyl(imidoyl)ketenes: Reactive Bidentate Oxa/Aza-Dienes for Organic Synthesis." Symmetry 13, no. 8 (2021): 1509. http://dx.doi.org/10.3390/sym13081509.

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Polyfunctional building blocks are essential for the implementation of diversity-oriented synthetic strategies, highly demanded in small molecule libraries’ design for modern drug discovery. Acyl(imidoyl)ketenes are highly reactive organic compounds, bearing both oxa- and aza-diene moieties, conjugated symmetrically to the ketene fragment, enabling synthesis of various skeletally diverse heterocycles on their basis. The highlights of reactions utilizing acyl(imidoyl)ketenes are high yields, short reaction time (about several minutes), high selectivity, atom economy, and simple purification pro

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17

Vodnala, Sumathi, Anagani Kanaka Durga Bhavani, Shankaraiah Pagilla, et al. "Synthesis and Cytotoxic Studies of Quinazoline-Triazole Hybrid Aza Heterocycles." Russian Journal of General Chemistry 91, no. 11 (2021): 2304–10. http://dx.doi.org/10.1134/s1070363221110189.

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18

Kitamura, Mitsuru, and Koichi Narasaka. "Synthesis of Aza-Heterocycles from Oximes by Amino-Heck Reaction." Chemical Record 2, no. 4 (2002): 268–77. http://dx.doi.org/10.1002/tcr.10030.

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19

Ma, Shengming. "Heterocycles based on the chemistry of alkylidenecyclopropanes and (aza)-cyclopropenes." Pure and Applied Chemistry 80, no. 4 (2008): 695–706. http://dx.doi.org/10.1351/pac200880040695.

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Alkylidenecyclopropyl, cyclopropenyl, or azacyclocyclopropenyl ketones or carboxylates have been demonstrated to be versatile starting materials for the synthesis of oxygen- and/or nitrogen-containing heterocycles. The reactivities and regioselectivities may be nicely controlled by subtle choice of the catalysts and reaction condition parameters.

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20

Majumdar, K. C., and S. K. Samanta. "Studies in aza-Claisen rearrangement: synthesis of dimedone-annelated unusual heterocycles." Tetrahedron 57, no. 23 (2001): 4955–58. http://dx.doi.org/10.1016/s0040-4020(01)00405-7.

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21

Marini, Francesca, Martina Palomba, Luana Bagnoli, and Claudio Santi. "Synthesis of Pyrrolidinols by Radical Additions to Carbonyls Groups." Proceedings 41, no. 1 (2019): 20. http://dx.doi.org/10.3390/ecsoc-23-06606.

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Radical cyclizations represent powerful synthetic strategies for the assembling of heterocycles. Most radical cyclizations are based on the addition to C C double or triple bonds. On the contrary, the addition to C O double bonds is rarely reported, since it proceeds reversibly due to the formation of thermodynamically unfavorable alkoxy radicals. Herein we report our attempts to construct substituted pyrrolidin-3-ols by tin-mediated radical cyclization of 5-phenylseleno-3-aza-pentanals. These rings are widely represented in natural products and drug candidates with various biological activiti

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22

Rulev, Alexander Yu, Alexey R. Romanov, Alexander V. Popov, Evgeniy V. Kondrashov, and Sergey V. Zinchenko. "Reaction of Bromoenones with Amidines: A Simple Catalyst-Free Approach to Trifluoromethylated Pyrimidines." Synthesis 52, no. 10 (2020): 1512–22. http://dx.doi.org/10.1055/s-0040-1707969.

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A facile one-pot synthesis of trifluoromethylated pyrimidines has been achieved by the treatment of fluorinated 2-bromoenones with aryl- and alkylamidines. The assembly of pyrimidine core proceeds by the cascade reactions via aza-Michael addition–intramolecular cyclization–dehydrohalogenation/dehydration sequence. This strategy is featured by high selectivity and mild reaction conditions giving the target heterocycles in high yields (up to 99%). The unique influence of trifluoromethyl group on the reaction path is demonstrated.

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23

Pinho e Melo, Teresa M. V. D. "Chemistry of aza- and diazafulvenium methides in heterocyclic synthesis." Pure and Applied Chemistry 88, no. 5 (2016): 457–75. http://dx.doi.org/10.1515/pac-2016-0404.

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AbstractAza- and diazafulvenium methide systems are versatile building blocks for the synthesis of pyrroles and pyrazoles. These extended dipoles participate in sigmatropic [1,8]H shifts and 1,7-electrocyclizations giving vinyl pyrroles and pyrazoles. Under flash vacuum pyrolysis conditions these heterocycles undergo interesting rearrangements. Aza- and diazafulvenium methides can be intercepted by dipolarophiles. Derivatives with carboxylate groups at C-4 and/or C-5 act exclusively as 1,7-dipoles affording products resulting from the addition across the 1,7-positions. These 1,7-cycloadducts i

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24

Cherkasov, V. M., and N. A. Kapran. "Aza-1,3-butadienes in synthesis of nitrogen-containing six-membered heterocycles (review)." Chemistry of Heterocyclic Compounds 28, no. 10 (1992): 1101–8. http://dx.doi.org/10.1007/bf00529568.

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25

Llona-Minguez, Sabin, Matthieu Desroses, Artin Ghassemian, et al. "Vinylic MIDA Boronates: New Building Blocks for the Synthesis of Aza-Heterocycles." Chemistry - A European Journal 21, no. 20 (2015): 7394–98. http://dx.doi.org/10.1002/chem.201406549.

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26

Geng, Zhi-Cong, Jian Chen, Ning Li та ін. "Organocatalytic cascade aza-Michael/hemiacetal reaction between disubstituted hydrazines and α,β-unsaturated aldehydes: Highly diastereo- and enantioselective synthesis of pyrazolidine derivatives". Beilstein Journal of Organic Chemistry 8 (9 жовтня 2012): 1710–20. http://dx.doi.org/10.3762/bjoc.8.195.

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The catalytic synthesis of nitrogen-containing heterocycles is of great importance to medicinal and synthetic chemists, and also a challenge for modern chemical methodology. In this paper, we report the synthesis of pyrazolidine derivatives through a domino aza-Michael/hemiacetal sequence with chiral or achiral secondary amines as organocatalysts. Thus, a series of achiral pyrazolidine derivatives were obtained with good yields (up to 90%) and high diastereoselectivities (>20:1) with pyrrolidine as an organocatalyst, and enantioenriched pyrazolidines are also achieved with good results (up

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27

Fustero, Santos, María Sánchez-Roselló, and Carlos del Pozo. "Asymmetric tandem reactions: New synthetic strategies." Pure and Applied Chemistry 82, no. 3 (2010): 669–77. http://dx.doi.org/10.1351/pac-con-09-09-07.

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The use of domino and multicomponent reactions in asymmetric synthesis is constantly increasing nowadays. This allows for the synthesis of complex molecules in a single synthetic sequence, usually with high atom economy. Herein, we report three examples of new asymmetric tandem reactions recently developed in our laboratories, giving rise to new families of enantiomerically enriched fluorinated and nonfluorinated heterocycles. Thus, 1,4-dihydropyridines (1,4-DHPs) bearing fluorinated substituents at C6 were assembled by means of a Hantzsch-type reaction; cyclic β-amino carbonyl derivatives wer

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28

Vinogradov, Maxim G., Olga V. Turova, and Sergei G. Zlotin. "Recent advances in the asymmetric synthesis of pharmacology-relevant nitrogen heterocycles via stereoselective aza-Michael reactions." Organic & Biomolecular Chemistry 17, no. 15 (2019): 3670–708. http://dx.doi.org/10.1039/c8ob03034k.

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In this review, recent applications of a stereoselective aza-Michael reaction for asymmetric synthesis of naturally occurring N-containing heterocyclic scaffolds and their usefulness to pharmacology are summarized.

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29

El Bouakher, Abderrahman, Arnaud Martel та Sébastien Comesse. "α-Halogenoacetamides: versatile and efficient tools for the synthesis of complex aza-heterocycles". Organic & Biomolecular Chemistry 17, № 37 (2019): 8467–85. http://dx.doi.org/10.1039/c9ob01683j.

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30

Singh, Surjeet, Ranjay Shaw, Shally, Sandeep Chaudhary, Abhinav Kumar, and Ramendra Pratap. "Synthesis of arylated and aminated naphthalenes and their synthetic applications for aza-heterocycles." Tetrahedron 72, no. 41 (2016): 6436–43. http://dx.doi.org/10.1016/j.tet.2016.08.044.

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31

Timmer, Mattie S. M., Martijn D. P. Risseeuw, Martijn Verdoes, et al. "Synthesis of functionalized heterocycles via a tandem Staudinger/aza-Wittig/Ugi multicomponent reaction." Tetrahedron: Asymmetry 16, no. 1 (2005): 177–85. http://dx.doi.org/10.1016/j.tetasy.2004.11.079.

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32

Burgin, Ryan N., Simon Jones, and B. Tarbit. "Scope and limitations of the Minisci reaction for the synthesis of aza-heterocycles." Tetrahedron Letters 50, no. 49 (2009): 6772–74. http://dx.doi.org/10.1016/j.tetlet.2009.09.112.

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33

Whelligan, Daniel K., Douglas W. Thomson, Dawn Taylor, and Swen Hoelder. "Two-Step Synthesis of Aza- and Diazaindoles from Chloroamino-N-heterocycles Using Ethoxyvinylborolane." Journal of Organic Chemistry 75, no. 1 (2010): 11–15. http://dx.doi.org/10.1021/jo902143f.

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34

Lugiņina, Jevgeņija, and Māris Turks. "Non-activated aziridines as building blocks for the synthesis of aza-heterocycles (microreview)." Chemistry of Heterocyclic Compounds 52, no. 10 (2016): 773–75. http://dx.doi.org/10.1007/s10593-016-1962-z.

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35

El-Ebiary, N. M., R. H. Swellem, and G. A. M. Nawwar. "Design, Synthesis and Anticancer Activity of Aza Heterocycles Containing Gallate Moiety (Part III)." Pharmaceutical Chemistry Journal 51, no. 1 (2017): 39–48. http://dx.doi.org/10.1007/s11094-017-1554-y.

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36

Majumdar, K. C., and S. K. Samanta. "ChemInform Abstract: Studies in Aza-Claisen Rearrangement: Synthesis of Dimedone-Anellated Unusual Heterocycles." ChemInform 32, no. 37 (2010): no. http://dx.doi.org/10.1002/chin.200137055.

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37

Albenque-Rubio, Sandra, Jean Guillon, Anita Cohen, et al. "Synthesis and Antimalarial Evaluation of New 1,3,5-tris[(4-(Substituted-aminomethyl)phenyl)methyl]benzene Derivatives: A Novel Alternative Antiparasitic Scaffold." Drugs and Drug Candidates 2, no. 3 (2023): 653–72. http://dx.doi.org/10.3390/ddc2030033.

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A series of new 1,3,5-tris[(4-(substituted-aminomethyl)phenyl)methyl]benzene compounds were designed, synthesized, and evaluated in vitro against two parasites (Plasmodium falciparum and Leishmania donovani). The biological results showed antimalarial activity with IC50 values in the sub and μM range. The in vitro cytotoxicity of these new aza polyaromatic derivatives was also evaluated on human HepG2 cells. The 1,3,5-tris[(4-(substituted-aminomethyl)phenyl)methyl]benzene 1m was found as one of the most potent and promising antimalarial candidates with a ratio of cytotoxic to antiprotozoal act

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38

Adda, Abdelghani, and Hayat Sediki. "Theoretical Study of the Aza˗Wittig Reaction, Me3P=NR (R = Methyl or Phenyl) with Aldehyde Using the DFT and DFT-D Methods (Dispersion Correction)." Chemistry Proceedings 3, no. 1 (2020): 47. http://dx.doi.org/10.3390/ecsoc-24-08349.

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: The Aza-Wittig reaction plays an important role in organic transformations and has seen considerable development in the construction of cyclic and acyclic compounds in neutral solvents in the absence of catalysts with a high yield of products. Today, the use of iminophosphoranes (phosphazenes) has become a powerful tool in organic synthesis strategies directed toward the construction of nitrogenous heterocycles. These can react with carbonyl compounds, an excellent method for the construction of C=N double bonds via intermolecular and intramolecular Aza-Wittig reactions. In this study, we ar

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39

Renslo, Adam R., Hongwu Gao, Priyadarshini Jaishankar, Revathy Venkatachalam, and Mikhail F. Gordeev. "Synthesis of Aza-, Oxa-, and Thiabicyclo[3.1.0]hexane Heterocycles from a Common Synthetic Intermediate." Organic Letters 7, no. 13 (2005): 2627–30. http://dx.doi.org/10.1021/ol050730h.

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40

Olier, Clarisse, Mustapha Kaafarani, Stéphane Gastaldi, and Michèle P. Bertrand. "Synthesis of tetrahydropyrans and related heterocycles via prins cyclization; extension to aza-prins cyclization." Tetrahedron 66, no. 2 (2010): 413–45. http://dx.doi.org/10.1016/j.tet.2009.10.069.

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41

CHERKASOV, V. M., and N. A. KAPRAN. "ChemInform Abstract: Aza-1,3-butadienes in the Synthesis of Nitrogen-Containing 6-Membered Heterocycles." ChemInform 24, no. 44 (2010): no. http://dx.doi.org/10.1002/chin.199344323.

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42

Llona-Minguez, Sabin, Matthieu Desroses, Artin Ghassemian, et al. "ChemInform Abstract: Vinylic MIDA Boronates: New Building Blocks for the Synthesis of Aza-Heterocycles." ChemInform 46, no. 40 (2015): no. http://dx.doi.org/10.1002/chin.201540135.

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43

Prishchenko, Andrey A., Roman S. Alekseyev, Mikhail V. Livantsov, et al. "Synthesis of new functionalized mono- and diphosphonic acids with five-membered aza-heterocycles moieties." Heteroatom Chemistry 28, no. 1 (2016): e21353. http://dx.doi.org/10.1002/hc.21353.

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44

Race, Nicholas J., Ian R. Hazelden, Adele Faulkner, and John F. Bower. "Recent developments in the use of aza-Heck cyclizations for the synthesis of chiral N-heterocycles." Chemical Science 8, no. 8 (2017): 5248–60. http://dx.doi.org/10.1039/c7sc01480e.

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45

Rostovskii, Nikolai V., Mikhail S. Novikov, and Alexander F. Khlebnikov. "Electrocyclizations of Conjugated Azapolyenes Produced in Reactions of Azaheterocycles with Metal Carbenes." Organics 2, no. 3 (2021): 313–36. http://dx.doi.org/10.3390/org2030017.

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Conjugated azapolyenes (azabuta-1,3-dienes, aza-/diaza-/oxaza-/oxadiazahexa-1,3,5-trienes) are highly reactive in electrocyclization reactions, which makes them convenient precursors for the synthesis of a wide range of four-, five-, and six-membered nitrogen heterocycles that are of relevance for medicinal chemistry. Ring opening reactions of 2H-azirines and azoles containing an N–N or N–O bond, initiated by a transition metal carbene, have become increasingly important in recent years, since they easily allow the generation of azapolyenes with different numbers of double bonds and heteroatom

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46

Narasaka, K. "Synthesis of azaheterocycles from oxime derivatives." Pure and Applied Chemistry 75, no. 1 (2003): 19–28. http://dx.doi.org/10.1351/pac200375010019.

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Electrophilic amination of Grignard reagents has been accomplished by using O-sulfonyloximes as amination reagents. Benzophenone O-sulfonyloxime derivatives react with Grignard reagents on sp2 nitrogen, yielding primary amines by successive hydrolysis of the resulting N-alkylimines. Various cyclic imines are synthesized by Pd-catalyzed reaction from olefinic oxime derivatives. That is, treatment of O-pentafluorobenzoyloximes of olefinic ketones with a catalytic amount of Pd(PPh3)4 and triethylamine affords nitrogen-containing heterocycles, such as pyrroles, pyridines, isoquinolines, spiro-imin

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47

Magoo, D., Komal Aggarwal, Shruti Gupta, and Kalawati Meena. "Enamines and their variants as intermediates for synthesis of aza-heterocycles with applications in MCRs." Tetrahedron 103 (January 2022): 132545. http://dx.doi.org/10.1016/j.tet.2021.132545.

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48

Takizawa, Shinobu. "Organocatalytic Synthesis of Highly Functionalized Heterocycles by Enantioselective aza-Morita–Baylis–Hillman-Type Domino Reactions." Chemical and Pharmaceutical Bulletin 68, no. 4 (2020): 299–315. http://dx.doi.org/10.1248/cpb.c19-00900.

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49

Wu, Jiajun, and Christophe Darcel. "Iron-Catalyzed Hydrogen Transfer Reduction of Nitroarenes with Alcohols: Synthesis of Imines and Aza Heterocycles." Journal of Organic Chemistry 86, no. 1 (2020): 1023–36. http://dx.doi.org/10.1021/acs.joc.0c02505.

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50

Eguchi, Shoji, Takashi Okano, and Tomohiro Okawa. "ChemInform Abstract: Synthesis of Heterocyclic Natural Products and Related Heterocycles by the Aza-Wittig Methodology." ChemInform 30, no. 27 (2010): no. http://dx.doi.org/10.1002/chin.199927287.

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