Highly stabilized sulfonium diacetylmethylides (la—c) reacted with acetyl chloride to give a mixture of the enol acetates (2a—c) and the enol diacetates (3a—c). Similarly, sulfonium acetylcarbomethoxymethylides (5a, b) gave the enol acetates (6a, b). These enol acetates were hydrolyzed with HCl-MeOH to give 3-methylthio-(3-phenylthio-)2, 4-pentanediones (4a, b) or methyl 2-methylthio-(2-phenylthio-)acetoacetates (7a, b).
All Science Journal Classification (ASJC) codes
- 化学 (全般)