作者:Kondoh, Azusa、Kato, Takuro、Chen, Hao、Terada, Masahiro
DOI:10.1021/acs.orglett.4c02532
日期:——
An enantioselective addition reaction of alkynyl esters with imines was developed under asymmetric autotandem catalysis with a chiral Brønsted base. A chiral bis(guanidino)iminophosphorane organosuperbase, which has much higher basicity than that of conventional chiral organic bases, efficiently promoted both the intramolecular cyclization for the construction of a benzofuran ring or a benzothiophene
在手性布朗斯台德碱的不对称自串联催化下,开发了炔酯与亚胺的对映选择性加成反应。手性双(胍基)亚氨基正膦有机超碱,其碱度远高于常规手性有机碱,有效促进了苯并呋喃环或苯并噻吩环构建的分子内环化以及二芳基甲烷的连续对映选择性直接曼尼希型反应衍生物,提供以其他方式难以获得的对映体富集的二芳基烷烃衍生物。