SYNTHESIS, SPECTROSCOPIC STUDIES, AND X-RAY CRYSTAL STRUCTURE OF N-HETERYLIMINOPHOSPHORANES
摘要:
N-[2-(alpha-Bromoacetyl)phenyl]imides (prepared in two steps from 2-aminoacetophenone) gave, upon treatment with sodium azide, fused azidoquinolines via an intramolecular cyclization. Reaction of the above azides with phosphines gave N-heteryliminophosphoranes. The IR, H-1-, C-13-, and P-31-NMR and MS spectra of these compounds as well as the x-ray crystal structure of two of them is reported.
Processes and intermediates useful in the preparation of Cis 1,3,4,6,7 llb-Hexa-hydro-7-aryl-2H-pyrazino[2,1-a]isoquinolines
申请人:PENNWALT CORPORATION
公开号:EP0300074A1
公开(公告)日:1989-01-25
Process of preparing the cis isomeric form of pyrazino [2,1-a] isoquinolines of formula
The process involves novel 2-piperazinones of formula
and novel pyrazino [2,1-a] isoquinolines of formula