Preparation of substituted 1,2,3,4-tetrahydroquinoxalines and 2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepines from catalytic Cp∗Ir hydrogen transfer N-heterocyclization of anilino alcohols
摘要:
The [Cp*IrCl2](2)/K2CO3 catalyzed hydrogen transfer N-heterocyclization on a series of anilino alcohols has been investigated. The catalyst (20% loading) converts anilino alcohols to 1,2,3,4-tetrahydroquinoxalines and 2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepines in 30-84% isolated yield. (c) 2006 Published by Elsevier Ltd.
Rhodium(CAAC)‐Catalyzed Arene Hydrogenation of Benzo‐Fused
<i>N</i>
‐Heterocycles to Saturated Building Blocks with an all‐
<i>cis</i>
Configuration
作者:Christian H. Schiwek、Simone Stegbauer、Thomas Pickl、Thorsten Bach
DOI:10.1002/adsc.202200582
日期:2022.10.4
and heterocyclic building blocks can be readily obtained by the hydrogenation of aromatic carbo- and heterocycles. Although a variety of methods have been established to accomplish this transformation for simple arenes, the hydrogenation of aromatic N-heterocycles is less explored. We herein report a diastereoselective arenehydrogenation which was applied to an array of benzo-fused N-heterocycles. A