A One-Step Synthesis of 2,3-Diydro-1,4-benzothiazines and Phenothiazines from 1,3-Thiazolidine Derivatives of Cyclohexanones
摘要:
N-Acetyl-1,3-thiazolidine derivatives of cyclohexanones, when treated with a threefold excess N-bromosuccinimide in anhydrous chloroform at room temperature, smoothly afford N-acetyl-2,3-dihydro-1,4-benzothiazines. This represents the first general route to such heterocyclic system in one step from aliphatic precursors. The synthesis of optically active N-acetyl-2,3-dihydro-1,4-benzothiazines is also reported.
Notes- Ring Derivatives of Phenothiazine. IV. Further Studies on the Thionation Reaction, and the Synthesis of Phenothiazinols
作者:Pankaja Kadaba、Samuel Massie
DOI:10.1021/jo01089a600
日期:1959.7
One-Pot Tandem Access to Phenothiazine Derivatives from Acetanilide and 2-Bromothiophenol <i>via</i> Rhodium-Catalyzed C–H Thiolation and Copper-Catalyzed C–N Amination
作者:Xiyan Rui、Chao Wang、Dongjuan Si、Xuechao Hui、Keting Li、Hongmei Wen、Wei Li、Jian Liu