Efficient access to 5-substituted thiazoles by a novel metallotropic rearrangement
作者:Alfonso Zambon、Giuseppe Borsato、Stefania Brussolo、Pietrogiulio Frascella、Vittorio Lucchini
DOI:10.1016/j.tetlet.2007.11.029
日期:2008.1
A novel rearrangement process involving the migration of trimethylstannanyl or trimethylsilanyl groups around the thiazole ring provides access to either 2- or 5-metallated thiazoles by tuning the reaction conditions. The proposed mechanism, based on experimental evidence, is characterized by the catalytic role of thiazole bisadducts as metal-transfer agents.
涉及三甲基锡烷基或三甲基硅烷基在噻唑环周围迁移的新颖的重排过程可通过调节反应条件来获得2-或5-金属化的噻唑。根据实验证据,所提出的机理的特征在于噻唑二加合物作为金属转移剂的催化作用。