A photoredox and Brønsted acid synergistically catalyzed cross‐dehydrogenative C−Ocouplingreaction is developed in which isochroman peroxyacetals are formed through sp3 C−H bond peroxidation. The reported method is characterized by its extremely mild reaction conditions, excellent yields, and broad substrate scope. An oxocarbenium ion p‐chlorobenzenesulfonate was speculated to be the reactive intermediate
A rhodium-catalysed three-component reaction to access C1-substituted tetrahydroisoquinolines
作者:Dan Zhang、Junwen Liu、Zhenghui Kang、Huang Qiu、Wenhao Hu
DOI:10.1039/c9ob02303h
日期:——
rhodium-catalyzed three-componentreaction of diazocompounds, anilines and C,N-cyclic azomethine imines via trapping of transient ammonium ylides was developed. This reaction provided a simple and convenient approach for the synthesis of pharmaceutically intriguing tetrahydroisoquinoline derivatives in moderate to good yields (36–85%) with good diastereoselectivities (up to 95 : 5 dr) under mild reaction conditions