A Convenient Synthesis of Tri- and Tetramethylbenzaldehydes from Readily Available Phenols
作者:Tom Sheppard、Persis Dhankher
DOI:10.1055/s-0033-1340302
日期:——
This letter describes a convenient synthesis of the six isomeric tri- and tetramethylbenzaldehydes, which are not readily available from major chemical suppliers. Formylation of readily available phenols via electrophilic aromatic substitution provides compounds containing the correct aromatic substitution pattern. Suzuki cross-coupling of the corresponding trifluoromethanesulfonates with methylboronic
这封信描述了六种异构三甲基苯甲醛和四甲基苯甲醛的便捷合成方法,这些异构体不易从主要化学品供应商处获得。通过亲电芳族取代对容易获得的酚类进行甲酰化提供包含正确芳族取代模式的化合物。相应的三氟甲磺酸盐与甲基硼酸的 Suzuki 交叉偶联然后提供作为单一异构体的苯甲醛。