Fischer Carbene Pentannulation with Alkynes Having Adjacent Carbonate or Acyloxy Groups: Synthesis of 3-Substituted 1-Indanones
作者:Rodney A. Fernandes、Sachin P. Gholap、Vijay P. Chavan、Akeel S. Saiyed、Shubhankar Bhattacharyya
DOI:10.1021/acs.orglett.0c00901
日期:2020.5.1
Various aryl Fischercarbenes reacted with alkynes having adjacent acyloxy or carbonate groups to regioselectively deliver 3-substituted 1-indanones. The acyloxy or carbonate group probably coordinates with the Cr metal to give a tetra-coordinated chromium complex forming a six-membered ring that retards CO insertion for ketene formation, which is required for benzannulation. Alternatively, the ortho
Regioselectivity of the reaction of a chromium-carbene complex with alkynes: Examination of steric and electronic factors
作者:A. Yamashita、A. Toy
DOI:10.1016/s0040-4039(00)84825-x
日期:1986.1
Examination of a steric and electronicfactor of alkyne in regioselectivity in the reaction of a phenyl chromium carbene complex with unsymmetrical alkynes is described.