作者:Charles W. Jefford、Andr� F. Boschung
DOI:10.1002/hlca.19760590328
日期:1976.4.21
Eleven structurally different α, β-unsaturated ketones were subjected to the Clemmensen reduction under anhydrous conditions using amalgamated zinc, hydrogen chloride in a solution of ethyl ether, and acetic anhydride. In all cases but one the formation of cyclopropyl acetates was observed. 4-Methyl-3-penten-2-one, methyl vinyl ketone, 2-isopropylidene-1-cyclopentanone, and 2-cyclohepten-1-one led
使用汞齐合的锌,氯化氢的乙醚溶液和乙酸酐,在无水条件下对11种结构不同的α,β-不饱和酮进行Clemmensen还原。除一种情况外,在所有情况下均观察到乙酸环丙酯的形成。4-甲基-3-戊烯-2-酮,甲基乙烯基酮,2-异亚丙基-1-环戊酮和2-环庚-1-酮生成取代的乙酸环丙基酯。发现与2-亚乙基-1-环戊酮,2-亚苄基-1-环己酮和甲基1-环己烯基酮的立体特异性反应,而3-戊烯-2-酮,3-甲基-3-丁烯酮2-和3-戊烯酮2-甲基-2-环己烯-1-酮提供了乙酸环丙酯异构体的混合物。