The photochemistry of acetylenic ethers. A novel carbon-oxygen to carbon-carbon bond conversion
作者:Bradley A. Smith、Andrew J. Callinan、John S. Swenton
DOI:10.1016/0040-4039(94)85199-9
日期:1994.4
Irradiation of acetylenic ethers in methanol gives homologated esters via a formal [1,3]-oxygen-to-carbon migration involving a ketene intermediate.
乙炔醚在甲醇中的辐射通过涉及乙烯酮中间体的形式上的[1,3]-氧-碳迁移而得到均酯。
Nickel-Catalyzed [3 + 2 + 2] Cycloaddition of Ethyl Cyclopropylideneacetate and Heteroatom-Substituted Alkynes: Application to Selective Three-Component Reaction with 1,3-Diynes
Heteroatom-substituted alkynes such as ynol ethers and ynamines turned out to be decent substrates for the Ni-catalyzed [3 + 2 + 2] cocyclization of ethylcyclopropylideneacetate (1). The three-componentcocyclization of 1, 1,3-diynes, and heteroatom-substituted alkynes also proceeded selectively. The study provided an efficient method for the synthesis of heteroatom-substituted cycloheptadiene and related compounds