Diastereoselective synthesis of 2-oxiranyl and 2-aziridinyl thiazoles
摘要:
2-Chloroalkylthiazolyllithiums, prepared by deprotonating the 2-chloroalkylthiazoles with n-BuLi at -78degreesC in THF, add to ketones or imines affording in 'one-pot' oxiranes and aziridines in a Z stereoselective manner. (C) 2003 Elsevier Science Ltd. All rights reserved.
Diastereoselective synthesis of 2-oxiranyl and 2-aziridinyl thiazoles
摘要:
2-Chloroalkylthiazolyllithiums, prepared by deprotonating the 2-chloroalkylthiazoles with n-BuLi at -78degreesC in THF, add to ketones or imines affording in 'one-pot' oxiranes and aziridines in a Z stereoselective manner. (C) 2003 Elsevier Science Ltd. All rights reserved.
2-Oxiranyl and 2-aziridinyl thiazoles 3 and 7 have been prepared by lithiation of thiazoles la and Ib and reaction with alpha-halogenocarbonyl compounds [1a, 1c-d] and alpha-halogenoimines [1b], respectively. (C) 1998 Elsevier Science Ltd. All rights reserved.