1-methyl-3,4-dihydro-benzo[4,5]furo[2,3-c]pyridine;1-Methyl-3,4-dihydro-benzofuro<2,3-c>pyridin;3,4-Dihydroderivat von (I)(R=H);1-Methyl-3,4-dihydro-[1]benzofuro[2,3-c]pyridine
Driving Recursive Dehydration by P<sup>III</sup>/P<sup>V</sup> Catalysis: Annulation of Amines and Carboxylic Acids by Sequential C–N and C–C Bond Formation
作者:Morgan Lecomte、Jeffrey M. Lipshultz、Shin-Ho Kim-Lee、Gen Li、Alexander T. Radosevich
DOI:10.1021/jacs.9b06277
日期:2019.8.14
A method for the annulation of amines and carboxylicacids to form pharmaceutically relevant azaheterocycles via organophosphorus PIII/PV redox catalysis is reported. The method employs a phosphetane catalyst together with a mild bromenium oxidant and terminal hydrosilane reductant to drive successive C–N and C–C bond-forming dehydration events via the serial action of a catalytic bromophosphonium