Synthesis of 2-substituted 1-benzyl-2,3,4,5-tetrahydro-1-benzazepines by palladium catalysis. Observation of a competitive β-hydride elimination pathway
摘要:
A synthetic route to 1-benzyl-tetrahydro-1-benzazepine is reported, which also permits access to analogous structures with alkyl and aryl substituents at position-2 of the aliphatic ring. Palladium catalysis is utilized in two of the three steps, constructing the seven-membered rings effectively from 2-bromoiodobenzene. Competitive P-hydride elimination was observed in the attempted carbon-nitrogen bond formation with a sterically bulky substrate (when R = tert-butyl). (C) 2003 Elsevier Science Ltd. All rights reserved.
Synthesis of 2-substituted 1-benzyl-2,3,4,5-tetrahydro-1-benzazepines by palladium catalysis. Observation of a competitive β-hydride elimination pathway
摘要:
A synthetic route to 1-benzyl-tetrahydro-1-benzazepine is reported, which also permits access to analogous structures with alkyl and aryl substituents at position-2 of the aliphatic ring. Palladium catalysis is utilized in two of the three steps, constructing the seven-membered rings effectively from 2-bromoiodobenzene. Competitive P-hydride elimination was observed in the attempted carbon-nitrogen bond formation with a sterically bulky substrate (when R = tert-butyl). (C) 2003 Elsevier Science Ltd. All rights reserved.
Synthesis of 2-substituted 1-benzyl-2,3,4,5-tetrahydro-1-benzazepines by palladium catalysis. Observation of a competitive β-hydride elimination pathway
作者:Maryiam Qadir、Rachael E. Priestley、Thomas W.D.F. Rising、Thomas Gelbrich、Simon J. Coles、Michael B. Hursthouse、Peter W. Sheldrake、Neil Whittall、K.K.(Mimi) Hii
DOI:10.1016/s0040-4039(03)00676-2
日期:2003.4
A synthetic route to 1-benzyl-tetrahydro-1-benzazepine is reported, which also permits access to analogous structures with alkyl and aryl substituents at position-2 of the aliphatic ring. Palladium catalysis is utilized in two of the three steps, constructing the seven-membered rings effectively from 2-bromoiodobenzene. Competitive P-hydride elimination was observed in the attempted carbon-nitrogen bond formation with a sterically bulky substrate (when R = tert-butyl). (C) 2003 Elsevier Science Ltd. All rights reserved.