Metal-catalyzed bond reorganization of 1,3-diynes

1,3-Diynes possessing propargylic heteroatom substituents provide functionalized 1,5-dien-3-ynes when catalyzed by platinum and gold. This rearrangement implies the involvement of metallotropic [1,3]-shift of the intermediate alkynyl metal carbene species. (c) Wiley-VCH Verlag GmbH & Co.