Abstract
The rhodium(II) acetate-catalyzed reaction 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.
Dedicated to Professor Marian Mikołajczyk, CBMiM PAN in Łódź, Poland, on the occasion of his 70th birthday.