Novel intramolecular cycloaddition reactions of arylamino-substituted Fischer chromium carbenes
摘要:
Thermal reaction of N-arylamino-substituted Fischer chromium carbenes having a pendant 2-(1-alkenyl)substituent on the benzene ring affords either substituted indoles or quinolines, depending on starting material, via an intramolecular [2 + 2] cycloaddition forming a metallacyclobutane followed by metathesis to give indoles or beta-elimination to give quinolines.
Intramolecular cyclization reactions of unsaturated amino Fischer chromium carbenes forming indoles and quinolines
作者:Björn C.G Söderberg、James A Shriver、Seth H Cooper、Timothy L Shrout、E Scott Helton、Lucinda R Austin、Herman H Odens、Brian R Hearn、Paula C Jones、Tiara N Kouadio、Tan H Ngi、Rachel Baswell、H John Caprara、Mark D Meritt、Than T Mai
DOI:10.1016/j.tet.2003.09.028
日期:2003.10
annulation reaction of N-(2-alkenylphenyl)amino substituted Fischer chromium carbenes has been extensively examined. The carbene complexes were prepared in moderate to good yields by reaction of 2-aminostyrenes with intermediately formed acyloxy substituted carbenes. Upon heating, the thermally labile carbenes decomposed producing indoles and quinolines as the major products. The product distribution
Novel intramolecular cycloaddition reactions of arylamino-substituted Fischer chromium carbenes
作者:Bjorn C. Soderberg、E. Scott Helton、Lucinda R. Austin、Herman H. Odens
DOI:10.1021/jo00073a009
日期:1993.10
Thermal reaction of N-arylamino-substituted Fischer chromium carbenes having a pendant 2-(1-alkenyl)substituent on the benzene ring affords either substituted indoles or quinolines, depending on starting material, via an intramolecular [2 + 2] cycloaddition forming a metallacyclobutane followed by metathesis to give indoles or beta-elimination to give quinolines.