Ketosulfonyl indoles in the regiodefined synthesis of tryptophols and related indole derivatives
作者:Alessandro Palmieri、Marino Petrini
DOI:10.1039/c2ob25056j
日期:——
Reduction of ketosulfonyl indoles with sodium borohydride provides a ready entry to tryptophols in a regiocomplementary fashion with respect to the traditional oxirane ring-opening by indoles under Friedel–Crafts conditions. Compared to traditional β-ketosulfones, ketosulfonyl indoles show a peculiar behavior since they undergo a Lewis acid promoted elimination of the arylsulfonyl group allowing the
还原酮磺酰基吲哚 硼氢化钠相对于弗里德尔-克拉夫茨条件下的吲哚类化合物传统的环氧乙烷开环,可以以区域互补的方式方便地使用三酚。与传统的β-酮砜相比,酮磺酰基吲哚显示出独特的行为,因为它们经历路易斯酸促进了芳基磺酰基的消除,从而可以制备吲哚基取代的1,4-二羰基衍生物。