Akiba,K.-Y. et al., Heterocycles, 1975, vol. 3, p. 567 - 570
作者:Akiba,K.-Y. et al.
DOI:——
日期:——
Alkylation of Benzothiazolines and the Stevens Rearrangement of the Resulting 2,3,3-Trisubstituted Benzothiazolinium Salts
作者:Kin-ya Akiba、Yoshio Ohara、Naoki Inamoto
DOI:10.1246/bcsj.55.2976
日期:1982.9
(3). The configuration of two alkyl groups on the nitrogen was assigned by NMR spectra and NOE measurement. In the Stevens rearrangement of 3 with lithium diisopropylamide ethyl group showed a much larger migratory aptitude (Et:Me≥20 :1) than methyl group irrespective of the configuration of 3, and cyclic ammonium ylide with planar π-type carbanion was proposed as an intermediate. 3 suffered nucleophilic