The spirovinyl carbinol 5 when treated with methanolic potassium hydroxide was found to rearrange to perhydrophenalene- 1,4-dione 6 via an anionic oxy-Cope rearrangement followed by an intramolecular Michael addition. The epimeric mixture of ketol acetates 15a and 15b was also found to rearrange to 2-hydroxy-2-methyl perhydroacenaphthylene-1,3-dione 16 on treatment with base.
发现当用
甲醇氢氧化钾处理时,螺
乙烯基甲醇5通过阴离子氧基-Cope重排然后分子内迈克尔加成而重排为全氢苯并-1,4-二酮6。还发现在用碱处理时,
乙酸酮醇
乙酸酯15a和15b的差向异构混合物重排为2-羟基-2-甲基过氢ac-1,3-二酮16。