Improved synthesis of 2??methoxyphenothiazine

JC Ruan, T Zhang, S Wang, JQ Liu…

Index: Ruan, Jian-Cheng; Zhang, Tao; Wang, Shuai; Liu, Jin-Qiang; Qian, Chao; Chen, Xin-Zhi Journal of Heterocyclic Chemistry, 2012 , vol. 49, # 2 p. 438 - 441

Full Text: HTML

Citation Number: 0

Abstract

Abstract A procedure for synthesis of 2-methoxyphenothiazine (1) has been developed, starting from resorcinol and aniline by condensation, following methylation and cyclization. p- Toluenesulfonic acid and polysubstituted aromatics were employed as the catalyst of condensation and the solvent of cyclization, respectively, to improve the yield. The use of parallel experiments, statistical experimental design, and multivariate modeling made the ...