中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 2,2-dichloro-N-(2,5-dimethylphenyl)acetamide | 14676-44-9 | C10H11Cl2NO | 232.109 |
Acetoacetanilide and substituted acetoacetanilides were trilithiated in excess lithium diisopropylamide, and the polylithiated intermediates were regioselectively condensed with lithiated methyl thiosalicylate, followed by acid cyclization to afford substituted N-aryl-4-oxo-4H-1-benzothiopyran-2-acetamides (thiochromone-2-acetamides).Key words: thiochromones, strong-base multiple anion synthesis, Claisen-type condensation.