Synthesis of 4,7,9-trimethyl-2<i>H</i>-thieno[3,2-<i>g</i>]-1-benzopyran-2-one. A psoralen isostere
作者:George R. Wellman
DOI:10.1002/jhet.5570170513
日期:1980.7
The title compound, an isostere of 4,5′,8-trimethylpsoralen, was prepared in good yield from 7-[(2-bromo-allyl)thio]-4,8-dimethylcoumarin via a thio-Claisen rearrangement. The structure of the final product was determined by proton nmr decoupling experiments.
由7-[(2-溴-烯丙基)硫代] -4,8-二甲基香豆素经硫代-克莱森重排以高收率制备标题化合物,为4,5',8-三甲基补骨脂素的等排物。最终产物的结构通过质子核磁共振解耦实验确定。