63160-12-3Relevant academic research and scientific papers
Lewis acids promoted 3 + 2 cycloaddition of oxaziridines and cyclic allylic alcohols through carbonyl imine intermediates
Zhao, Erbao,Zhou, Feilong,Zhao, Yujun
, p. 4282 - 4293 (2019/04/30)
Syntheses of isoxazolidines through the carbonyl imine intermediates are currently limited to monosubstituted olefin substrates. Herein, we reported syntheses of novel bicyclic isoxazolidine-containing compounds through 1,3-dipolar cycloaddition reactions
Oxaziridinium compound (by machine translation)
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, (2017/09/02)
Various applications such as various reaction using compound [a] oxidant oxaziridines, safe and simple, while eliminating as much as possible intrusion of impurities which can be efficiently manufactured oxaziridinium compound production method. The follo
Hydrogen peroxide/dimethyl carbonate: A green system for epoxidation of: N -alkylimines and N -sulfonylimines. One-pot synthesis of N -alkyloxaziridines from N -alkylamines and (hetero)aromatic aldehydes
Kra?em, Jamil,Ghedira, Donia,Ollevier, Thierry
, p. 4859 - 4864 (2016/10/12)
A green method for epoxidation of imines using an environmentally benign oxidant system, H2O2/dimethyl carbonate, was developed. N-Alkyloxaziridines were prepared in high yields from N-alkylamines and (hetero)aromatic aldehydes in one-pot fashion, whereas N-sulfonyloxaziridines have been prepared by using the same oxidant system and 5 mol% of Zn(OAc)2·2H2O as catalyst.
Kinetic Resolution of Oxaziridines via Chiral Bifunctional Guanidine-Catalyzed Enantioselective α-Hydroxylation of β-Keto Esters
Lin, Xiaobin,Ruan, Sai,Yao, Qian,Yin, Chengkai,Lin, Lili,Feng, Xiaoming,Liu, Xiaohua
supporting information, p. 3602 - 3605 (2016/08/16)
An efficient kinetic resolution of racemic oxaziridines has been realized via catalytic asymmetric α-hydroxylation of available β-keto esters. In the presence of a chiral bifunctional guanidine catalyst, a variety of optically active oxaziridines and chir
Novel chiral thiourea organocatalysts for the catalytic asymmetric oxaziridination
Ji, Nan,Yuan, Jiani,Xue, Shanshan,Zhang, Junna,He, Wei
supporting information, p. 512 - 517 (2015/12/31)
Catalytic enantioselective oxaziridination is one of the challenging reactions in the oxidation of organic molecules. In this article, a series of novel chiral thiourea moleculars were synthesized from natural cinchona alkaloids and primary amines. By usi
Ring Expansion of Donor-Acceptor Cyclopropane via Substituent Controlled Selective N-Transfer of Oxaziridine: Synthetic and Mechanistic Insights
Ghosh, Asit,Mandal, Subhajit,Chattaraj, Pratim Kumar,Banerjee, Prabal
supporting information, p. 4940 - 4943 (2016/10/18)
A distinctive N-substituent controlled electrophilic N-transfer of oxaziridines with donor-acceptor cyclopropanes in the presence of MgI2 is reported. Contrary to earlier reports, the oxaziridine having bulkier N-substituents can also give N-transferred product instead of the O-transferred one. Interestingly, the oxaziridines having α-H containing N-substituents lead to the pyrrolidine derivatives through [3 + 2] cycloaddition. A mechanistic reasoning for this divergent reactivity is depicted by density functional theory calculations and validated through energy decomposition analysis.
Asymmetric Isothiourea-Catalysed Formal [3+2] Cycloadditions of Ammonium Enolates with Oxaziridines
Smith, Siobhan R.,Fallan, Charlene,Taylor, James E.,McLennan, Ross,Daniels, David S. B.,Morrill, Louis C.,Slawin, Alexandra M. Z.,Smith, Andrew D.
supporting information, p. 10530 - 10536 (2015/07/07)
A highly enantioselective Lewis base-catalysed formal [3+2] cycloaddition of ammonium enolates and oxaziridines to give stereodefined oxazolidin-4-ones in high yield is described. Employing an enantioenriched oxaziridine in this process leads to a matched/mis-matched effect with the isothiourea catalyst and allowed the synthesis of either syn- or anti-stereodefined oxazolidin-4-ones in high d.r., yield and ee. Additionally, the oxazolidin-4-one products have been derivatised to afford functionalised enantioenriched building blocks.
Iron-catalyzed kinetic resolution of N-sulfonyl oxaziridines
Williamson, Kevin S.,Sawicki, James W.,Yoon, Tehshik P.
, p. 3524 - 3527 (2014/08/18)
We have developed a highly selective kinetic resolution of N-sulfonyl oxaziridines. This reaction utilizes an inexpensive and easily synthesized iron bis(oxazoline) catalyst to promote the efficient rearrangement of oxaziridines to the corresponding N-sulfonyl imides; no sacrificial reagents are required to effect this resolution. This process is readily translated to gram scale, which provides a practical method for the preparation of structurally diverse, enantiopure N-sulfonyl oxaziridines for use as reagents in organic synthesis.
Racemic N-sulfonyloxaziridines as highly diastereoselective enolate hydroxylating agents: Enantioselective synthesis of (2S,3S)-3-amino-N- cyclopropyl-2-hydroxyhexanamide
Kiss, Eleonóra,Markó, István E.,Guillaume, Michel
experimental part, p. 9173 - 9178 (2011/12/01)
A new, highly enantioselective synthesis of (2S,3S)-3-amino-N-cyclopropyl- 2-hydroxyhexanamide, a synthetic fragment of the experimental hepatitis C drug Telaprevir, has been described. Conjugate addition of the enantiomerically pure Davies lithium amide
