作者:Keith Smith、Charles M. Lindsay、Gareth J. Pritchard
DOI:10.1021/ja00184a040
日期:1989.1
treatment with electrophiles provides a convenient approach to ortho-substituted arenethiol derivatives. The reactions with tetraisopropylthiuram disulfide provide direct access to the corresponding o-phenylene trithiocarbonates. Double lithiation of 4-methoxybenzenethiol results in C-lithiation adjacent to the methoxy group rather than the thiolate residue, indicating that methoxy is a more powerfully ortho-directing
苯硫醇、甲苯-4-硫醇和 3,5-二甲基苯硫醇在四甲基乙二胺中被正丁基锂双重锂化(在硫和碳上)。C-锂化发生在硫醇基团的邻位,随后用亲电试剂处理为邻位取代的芳硫醇衍生物提供了方便的方法。与四异丙基秋兰姆二硫化物的反应可直接获得相应的邻亚苯基三硫代碳酸酯。4-甲氧基苯硫醇的双锂化导致与甲氧基相邻的 C-锂化而不是硫醇盐残基,表明甲氧基是此类金属化反应中更强大的邻位取代基。3-甲氧基苯硫醇在甲氧基和硫醇盐基团之间锂化。