InBr3- and AgOTf-catalyzed beckmann rearrangement of (E)-benzoheterocyclic oximes
作者:Vishnu K. Tandon、Anoop K. Awasthi、Hardesh K. Maurya、Pushyamitra Mishra
DOI:10.1002/jhet.438
日期:2012.3
Beckmann rearrangement of (E)‐4‐chromanone oxime, (E)‐5‐oximino‐3,4‐dihydro‐1(2H)‐benzoxepines, and (E)‐5‐oximino‐3,4‐dihydro‐1(2H)‐benzothiepine are catalyzed by InBr3 and AgOTf in refluxing acetonitrile resulting in the formation of pharmaceutically active heterocycles benzoxazepin‐4‐one, 5‐oxo‐benzoxazocines, and 5‐oxo‐benzothiazocine derivative, respectively, in excellent yield. J. Heterocyclic
(E)-4-苯并二氢呋喃肟,(E)-5-肟基-3,4-二氢-1(2 H)-苯并二氢呋喃和(E)-5-肟基-3,4-二氢-1的贝克曼重排在回流的乙腈中,InBr 3和AgOTf催化(2 H)-苯并噻庚因,从而分别以极好的收率形成了药物活性杂环苯并恶唑啉-4--1、5-氧代苯并恶唑啉衍生物和5-氧代苯并噻唑啉衍生物。J.杂环化学。(2012)。