[reaction: see text] Only 1-3 mol % of PtCl(2) or AuBr(3) was sufficient to promote generation and [3+2] cycloaddition of transition-metal-containing azomethineylides derived from N-(o-alkynylphenyl)imines bearing an internal alkyne moiety. A highly efficient method for the preparation of synthetically useful tricyclic indole derivatives having a substituent at the 3-position of the indole nucleus
Isolation and Reaction of (Indolin-3-ylidene)pentacarbonyltungsten Generated from Tungsten-containing Azomethine Ylide
作者:Jun Takaya、Hiroyuki Kusama、Nobuharu Iwasawa
DOI:10.1246/cl.2004.16
日期:2004.1
(Indolin-3-ylidene)pentacarbonyltungsten, a non-heteroatom-stabilized carbene complex of group 6 metal, was successfully isolated by the reaction of N-(o-alkynylphenyl)imine derivative, vinyl ether and tungstenhexacarbonyl under photoirradiation. This complex was moderately stable and fully characterized by spectroscopic analysis.