INDIUM TRICHLORIDE PROMOTED REGIOSELECTIVE RING OPENING OF AZIRIDINES WITH TMS AZIDE
摘要:
N-Tosylaziridines are opened regioselectively with trimethylsilyl azide in the presence of indium trichloride to afford the corresponding azido amines in high yields.
One-Carbon Homologation of <i>N</i>-Sulfonylaziridines to Allylic Amines Using Dimethylsulfonium Methylide
作者:David M. Hodgson、Matthew J. Fleming、Steven J. Stanway
DOI:10.1021/ol051124p
日期:2005.7.1
[reaction: see text]. Regio- and stereodefined allylic N-sulfonylamines are synthesized in high yields and under experimentally straightforward conditions by reaction of N-sulfonylaziridines with excess dimethylsulfoniummethylide.
an ortho-C(sp2) atom of aromatic acids with aliphatic aziridines to construct the β-arylethylamine skeleton via C–H activation has been developed. The reaction proceeded under mild conditions with great substrate scope. Meanwhile, the β-arylethylamine skeleton in drugs or bioactive compounds could be easily generated in a single step. A catalytic amount of cesium carbonate was crucial to realizing
LiClO4-Catalyzed Ring-Opening of Aziridines with Aromatic Amines
作者:J. S. Yadav、B. V. S. Reddy、B. Jyothirmai、M. S. R. Murty
DOI:10.1055/s-2002-19317
日期:——
A variety of N-tosylaziridines undergo smoothly ring opening with aromatic amines using a catalytic amount of lithium perchlorate in acetonitrile at ambient temperature to afford the corresponding 1,2-diamines in excellent yields.
Indium Tribromide Catalyzed Highly Regioselective Ring Opening of Epoxides and Aziridines with Pyrrole
作者:J. S. Yadav、B. V. S. Reddy、G. Parimala
DOI:10.1055/s-2002-32575
日期:——
Pyrrole reacts smoothly with terminal epoxides in the presence of a catalytic amount of InBr3 under very mild conditions to afford the corresponding C-alkylated pyrroles in high yields. Similarly, activated aziridines also opened by pyrrole under the influence of indium tribromide to afford 2- and 3-alkyl pyrrole derivatives in high yields with high regioselectivity.
Facile synthesis of oxazolidinones catalyzed by n-Bu4NBr3/n-Bu4NBr directly from olefins, chloramine-T and carbon dioxide
作者:De-Lin Kong、Liang-Nian He、Jin-Quan Wang
DOI:10.1016/j.catcom.2010.04.003
日期:2010.6
A binary catalyst system composed of n-Bu4NBr3/n-Bu4NBr was developed for facile synthesis of 5-substituted 2-oxazolidinones with perfect regioselectivity in a single operation directly from olefins, chloramine-T and CO2. The choice of efficient binary catalysts for two steps, i.e. aziridination and cycloaddition, and the optimization of reaction condition are keys to the one-pot synthesis of 5-substituted 2-oxazolidinones. A possible mechanism for the present one-pot synthesis of oxazolidinones was also proposed. (C) 2010 Elsevier B.V. All rights reserved.