The base-promoted isomerization of aziridines to allyl amines is still an almost unknown reaction. However, the use of superbasic reagents has shown to be able to promote a regio- and stereoselective conversion of monocyclic and bicyclic sulfonyl aziridines. Moreover, the use of alkoxy substituted aziridines opens new routes to non-natural alpha- and beta-amino acids. (C) 2002 Elsevier Science Ltd. All rights reserved.
(t-BuOI) was found to be a powerful reagent for synthesis of aziridines from olefins and sulfonamides. The aziridination of olefins was achieved by using sulfonamides with t-BuOI. Our preliminary findings represent the example of metal-free aziridination of olefins with readily accessible sulfonamides as a nitrogensource.
Novel organic-solvent-free aziridination of olefins: Chloramine-T–I2 system under phase-transfer catalysis conditions
作者:Daisuke Kano、Satoshi Minakata、Mitsuo Komatsu
DOI:10.1039/b104940m
日期:2001.11.29
A variety of olefins could be aziridinated successfully by employing iodine-catalysed aziridination in water with a catalytic amount of a quaternary ammonium salt. Furthermore, the larger-scale process of styrene aziridination gives a highly pure aziridine in good yield via simple work-up.
Microencapsulated copper(II) acetylacetonate was prepared and used in the aziridination of alkenes employing [N-(p-tolylsulfonyl)imino]phenyliodinane (PhI=NTs) as the nitrogen source. Microencapsulated copper(II) acetylacetonate [MC-Cu(acac)(2)] catalyst was reused for several cycles with consistent activity. (C) 2003 Elsevier Ltd. All rights reserved.
Silica–Water Reaction Media: Its Application to the Formation and Ring Opening of Aziridines