140935-30-4Relevant academic research and scientific papers
Selective transformations of 3-phenacylbenzothiazolium cations to 2-aryl-4-formyl-2-hydroxy-2,3-dihydro-1,4-benzothiazines, 2-aryl-4-formyl-1,4-benzothiazines and 2-aroylbenzothiazoles
Singh, Harjit,Singh, Daman Jit,Kumar, Subodh
, p. 217 - 222 (2007/10/02)
3-Phenacylbenzothiazolium cations (4) instantaneously react with 2percent aq. sodium hydroxide (1 equiv.) in methanol at ambient temperature to form 2-aryl-4-formyl-2-hydroxy-2,3-dihydro-1,4-benzothiazines (5) (65-80percent), which undergo dehydration wit
