Use of allylzinc halide as a source of halide: Differential addition of nucleophiles to Ts-aziridines and aldehydes under similar reaction conditions
作者:Rana Chatterjee、Satyajit Samanta、Anindita Mukherjee、Sougata Santra、Grigory V. Zyryanov、Adinath Majee
DOI:10.1016/j.tetlet.2018.12.027
日期:2019.1
halide under identical reaction conditions acts in different modes for different electrophiles. For Ts-aziridines the halide part of the allylic halide has been introduced as a nucleophile and for the carbonyl compounds the simple allylation reaction occurs. To the best of our knowledge this is the first report where the allylic zinc halide is the source of halide acting as nucleophile. The main advantages
Generation and Ring Opening of Aziridines in Telescoped Continuous Flow Processes
作者:Nathanael Hsueh、Guy J. Clarkson、Michael Shipman
DOI:10.1021/acs.orglett.5b01777
日期:2015.7.17
A simple method for the preparation of a variety of N-sulfonyl aziridines (10 examples) from 1,2-amino alcohols under continuous flow conditions is described. Using flow based methods, the aziridines can be further ring opened with oxygen, carbon, and halide nucleophiles or ring expanded to imidazolines by Lewis acid promoted reaction with nitriles. Telescoping the aziridine generation and ring opening steps together in a microfluidic reactor allows the chemistry to be undertaken with limited exposure to the potentially hazardous aziridine intermediates.
TONIMOTO, SHIGEO;REDDY, CHAGANTI P.;OKAMOTO, TADASHI, BULL. INST. CHEM. RES. KYOTO UNIV., 66,(1989) N, C. 615-623