Reactionbetweensodium 1-imidazolecarbodithioate, prepared from sodium imidazole and carbondisulfide, and α-haloketone gave the corresponding 1,3-oxathiole derivatives in high yields.
Formation of 2-Methylene-1,3-oxathiole Derivatives in the Rhodium(II) Acetate-Catalyzed Reaction of α -Diazocarbonyl Compounds with Carbon Disulfide
作者:Hirofumi Nakano、Toshikazu Ibata
DOI:10.1080/10426500902856313
日期:2009.5.14
The rhodium(II) acetate-catalyzedreaction of α -diazocarbonyl compound with carbon disulfide gave 1,3-oxathiole-2-thione, 2-methylene-1,3-oxathiole, and 2,2′ -spirobis(1,3-oxathiole) derivatives depending on the substituent on the diazo compounds via 1,5- or 1,3-electrocyclization of thiocarbonyl ylide intermediate formed by the reaction of rhodium carbenoid with thiocarbonyl group.