Toluene as a novel carrier of xanthates—preparation, use and surrogate of S-tri- and di-chloromethyl xanthates
作者:Raphaël Dumeunier、Annika Huber
DOI:10.1016/j.tetlet.2014.06.030
日期:2014.7
Toluene has been identified as a novel carrier of xanthates. Their corresponding fragmentative precursors proved to behave efficiently in radical group transfer reactions. As examples, unprecedented S-tri/di-chloromethyl xanthates could be prepared, isolated and further used in radical additions to olefins. Their precursors (de-aromatized toluene upon which is grafted, at one end, a tri/di-chloromethyl-group
甲苯已被确定为黄药的新型载体。事实证明,它们相应的片段化前体在自由基基团转移反应中可有效发挥作用。作为实例,可以制备,分离和进一步用于烯烃的自由基加成中空前的S-三/二氯甲基黄原酸酯。它们的前体(去芳香化的甲苯,其一端接有三/二氯甲基,而另一端接有二硫代羰基)也可直接用于两个基团向烯烃的转移。因此,通过前体的自由基引发的断裂而重新芳香化损失的甲苯给黄原酸酯的化学带来了新的机会,在此以新的S -tri /二氯甲基黄原酸酯的分子间加成为例。