作者:Stefania De Montis、Claudia Fattuoni、Enzo Cadoni、Maria G. Cabiddu、Michele Usai、Salvatore Cabiddu
DOI:10.1002/jhet.5570450530
日期:2008.9
4H-1,4-Benzothiazine-1,1-dioxide derivatives were synthesized through a sequence of almost quantitative reactions. The commercial starting material 2-(methylsulfanyl)aniline was Boc-protected, N-acylated and oxidized at the sulfur atom to obtain a sulfonyl derivative. An anionic transposition of the acyl group followed by asimultaneous deprotection-cyclization gave the title products in excellent yields
通过一系列几乎定量的反应合成了4 H -1,4-苯并噻嗪-1,1-二氧化物衍生物。将商品原料2-(甲基硫烷基)苯胺进行Boc保护,N-酰化并在硫原子上氧化以获得磺酰基衍生物。酰基的阴离子转座,然后同时进行脱保护-环化,可以以优异的收率得到标题产物。所有产品和中间体均经过充分表征。