Directed ortho-lithiation as a tool for synthesis of chiral 1,2-disubstituted arylsulfonamides
作者:Martin Ravutsov、Zhanina Petkova、Vladimir Dimitrov
DOI:10.1007/s00706-018-2296-6
日期:2018.12
AbstractThe directed ortho-lithiation is demonstrated as an excellent method for additional functionalization of chiral phenyl and naphthyl sulfonamides. The chirality was introduced through sulfonamide formation with a series of chiral amines prior to the lithiation process. In the case of naphthyl sulfonamides the regioselectivity of the directed ortho-lithiation was studied and optimized. The approach
摘要定向邻位锂化被证明是用于手性苯基和萘基磺酰胺的额外官能化的极好的方法。在锂化过程之前,通过与一系列手性胺形成磺酰胺来引入手性。在萘磺酰胺的情况下,对定向邻位锂化的区域选择性进行了研究和优化。已证明该方法提供了容易的邻官能化,并且被用于手性1,2-磺酰胺基膦衍生物的合成。后者被评估为Pd催化的不对称烯丙基取代中的P,O-配体。 图形概要