Synthesis of N-Diphenylphosphinoylimines Using the Kresze Reaction
摘要:
The synthesis of N-diphenylphosphinoylimines involving the treatment of aldehydes with PP-diphenyl N-sulfinylphosphoramidate (Ph2P(O)NSO) is described. The reagent is prepared from PP-diplienylphosphinic amide, thionyl chloride, and imidazole.
Enantioselective synthesis of diaryl aziridines using tetrahydrothiophene-based chiral sulfides as organocatalysts
作者:Meng-Ting Huang、Hsin-Yi Wu、Rong-Jie Chein
DOI:10.1039/c3cc47550f
日期:——
This work describes catalytic and asymmetricaziridinations (15 examples, 95-98% ee) of benzyl bromide and imines via the imino Corey-Chaykovsky reaction using (thiolan-2-yl)diarylmethanol benzyl ether as an organocatalyst. The catalyst and analogues thereof were prepared through an expeditious and efficient synthetic route featuring a double nucleophilic substitution and Shi epoxidation as key steps
Stereocontrolled Aziridination of Imines via a Sulfonium Ylide Route and a Mechanistic Study
作者:Xiao-Fang Yang、Ming-Jie Zhang、Xue-Long Hou、Li-Xin Dai
DOI:10.1021/jo0257389
日期:2002.11.1
temperature. trans-Aziridines were also obtained when imines 1 and sulfinimines 9 were reacted with N,N-dimethylacetamide-2-dimethylsulfonium bromide (7) in the presence of a base, respectively. A mechanistic study showed that the stereochemistry of these reactions was controlled by the reactivity of the imines and ylides. A higher reactivity of imines and ylides favors the formation of cis-aziridines, whereas
[EN] SIMPLE ORGANIC MOLECULES AS CATALYSTS FOR PRACTICAL AND EFFICIENT ENANTIOSELECTIVE SYNTHESIS OF AMINES AND ALCOHOLS<br/>[FR] MOLÉCULES ORGANIQUES SIMPLES EN TANT QUE CATALYSEURS POUR LA SYNTHÈSE ÉNANTIOSÉLECTIVE PRATIQUE ET EFFICACE D'AMINES ET D'ALCOOLS
申请人:TRUSTEES BOSTON COLLEGE
公开号:WO2013131043A1
公开(公告)日:2013-09-06
The present invention provides organic molecules and methods thereof for reactions between organoboron reagents and double bonds, such as imines or carbonyls, to stereoselectively provide chiral products including amines and alcohols, entities useful for the preparation of biologically active molecules.
N-phosphinoyl oxaziridines; a new class of oxaziridines
作者:Derek R. Boyd、W. Brian Jennings、Rosaleen M. McGuckin、Mark Rutherford、Barahman M. Saket
DOI:10.1039/c39850000582
日期:——
Novel stable N-phosphinoyl oxaziridines have been prepared and characterized by n.m.r. and mass spectrometry; they function as oxidants towards phosphines, sulphides, and alknes.
Reaction of phosphinoyl-activated imines: stereocontrolled synthesis of either trans- or cis-vinylaziridines
作者:Xue-Long Hou、Xiao-Fang Yang、Li-Xin Dai
DOI:10.1039/a800438b
日期:——
Phosphinoyl imines react with allylsulfonium ylide to provide trans-aziridines at room temperature and cis-aziridines at low temperature, in high yields and good to excellent stereoselectivities.