Catalytic Asymmetric Allylboration of Indoles and Dihydroisoquinolines with Allylboronic Acids: Stereodivergent Synthesis of up to Three Contiguous Stereocenters
作者:Rauful Alam、Colin Diner、Sybrand Jonker、Lars Eriksson、Kálmán J. Szabó
DOI:10.1002/anie.201608605
日期:2016.11.7
The catalytic asymmetric allylboration of cyclic imines with γ,γ‐disubstituted allylboronic acids provides products with adjacent stereocenters in high yield and stereoselectivity. Various electrophiles, including 3,4‐dihydroisoquinolines and indoles, were prenylated in a fully stereodivergent fashion by switching the E/Z geometry of the allylboronate and/or the enantiomer of the BINOL catalyst. 3‐Methylindole
环亚胺与γ,γ-二取代的烯丙基硼酸的催化不对称烯丙基硼化可高产率和立体选择性地提供具有相邻立构中心的产物。通过切换烯丙基硼酸酯和/或BINOL催化剂的对映异构体的E / Z几何形状,以完全立体发散的方式将各种亲电试剂(包括3,4-二氢异喹啉和吲哚)进行炔基化。3-甲基吲哚在一次合成操作中为产品提供了三个具有高立体选择性的相邻立构中心。