Regioselective syntheses of substituted thioxanthen- and selenoxanthen-9-one derivatives.
作者:Mitsuaki WATANABE、Mutsuhiro DATE、Masao TSUKAZAKI、Sunao FURUKAWA
DOI:10.1248/cpb.37.36
日期:——
Various methoxy-substituted thioxanthen-9-one derivatives were regioselectively synthesized by a one-pot condensation of S-lithiated thiosalicylic ester or amides, obtained via directed lithiation of tertiary benzamides, with benzynes. Similarly, the synthesis of selenoxanthen-9-ones was achieved.
通过对三级苯甲酰胺进行定向石碳酸化而得到的 S-石碳酸化硫代水杨酸酯或酰胺与苄基化合物进行一锅缩合,从而选择性地合成了各种甲氧基取代的硫杂蒽-9-酮衍生物。同样,还实现了硒氧杂蒽-9-酮的合成。