Studies on the Synthesis of 5-Acyl-2,4-diaminothiazoles from Amidinothioureas
作者:K. N. Rajasekharan、K. P. Nair、G. C. Jenardanan
DOI:10.1055/s-1986-31634
日期:——
1-Alkyl or aryl-3-amidinothioureas with or without substituents on the amidino moiety react with α-haloketones to yield 5-acyl-2,4-diaminothiazoles.
1-烷基或芳基-3-脒基硫脲与δ-卤酮反应或不反应,生成 5-酰基-2,4-二氨基噻唑。
Synthesis of 2,4-Diamino-5-Cinnamoylthiazoles and Their Attempted Cyclization
作者:R Binu、S Deepa、K. N.Rajasekharan
DOI:10.1080/00397919808004909
日期:1998.10
Abstract Synthesis of 4-amino-2-aryl(or alkyl)amino-5-cinnamoylthiazoles by a [(C ─ N ─ C ─ S) + C] ring construction route is reported. Unlike the analogous 2′-aminochalcones, neither do these thiazoles cyclize to bicyclic pyridones, nor could these be prepared from the corresponding 5-acetylthiazoles and benzaldehyde.