A ring expansion method for the preparation of 2,3-dihydro-1,4-benzothiazines from 2-aryl-2,3-dihydrobenzothiazoles
作者:Sabir H. Mashraqui、Richard M. Kellogg
DOI:10.1016/s0040-4039(00)99070-1
日期:1985.1
In the presence of KF in dimethylformamide (DMF) 2-aryl-2,3-dihydrobenzothiazoles react with α-haloketones to provide in good yield 2,3-dihydro-2,3-disubstituted-1,4- benzothiazines.
在二甲基甲酰胺(DMF)中存在KF的情况下,2-芳基-2,3-二氢苯并噻唑与α-卤代酮反应以提供高收率的2,3-二氢-2,3-二取代-1,4-苯并噻嗪。