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.
the [3+2] cycloaddition reaction of transition metal-containing azomethine ylides derived from N-(o-alkynylphenyl)imines with vinyl ethers. Third-row transition metal complexes, especially PtCl2, turned out to be highly efficient for the reaction of internal alkynes and imidate substrates with wide generality. Moreover, as strong support for the reaction mechanism, the intermediate Pt–carbene complex