韶关学院学报
韶關學院學報
소관학원학보
Journal of Shaoguan University(Social Science Edition)
2008年
6期
69~73
,共null页
4-羟基香豆素 对醌 Michael 加成反应
4-羥基香豆素 對醌 Michael 加成反應
4-간기향두소 대곤 Michael 가성반응
4-hydroxycoumarins; p-quinone; Michael reaction
综述了不同条件下4-羟基香豆素类化合物与对醌的Michael加成反应及其反应机理.在丙酮-水中,4-羟基香豆素类化合物与1,4-苯醌反应生成2,3-二取代-1,4-苯醌,与1,4-萘醌反应生成2,3-二取代-1,4-蔡醌.在丙酮-水中,吡啶存在下,4-羟基香豆素类化合物与1,4-苯醌反应生成两性离子化合物;类似反应条件下,得到4-羟基喹啉酮两性离子化合物.4-羟基香豆素类化合物与2,3-二氯-5,6-二氰基对苯醌反应获得了新的螺环化合物.
綜述瞭不同條件下4-羥基香豆素類化閤物與對醌的Michael加成反應及其反應機理.在丙酮-水中,4-羥基香豆素類化閤物與1,4-苯醌反應生成2,3-二取代-1,4-苯醌,與1,4-萘醌反應生成2,3-二取代-1,4-蔡醌.在丙酮-水中,吡啶存在下,4-羥基香豆素類化閤物與1,4-苯醌反應生成兩性離子化閤物;類似反應條件下,得到4-羥基喹啉酮兩性離子化閤物.4-羥基香豆素類化閤物與2,3-二氯-5,6-二氰基對苯醌反應穫得瞭新的螺環化閤物.
종술료불동조건하4-간기향두소류화합물여대곤적Michael가성반응급기반응궤리.재병동-수중,4-간기향두소류화합물여1,4-분곤반응생성2,3-이취대-1,4-분곤,여1,4-내곤반응생성2,3-이취대-1,4-채곤.재병동-수중,필정존재하,4-간기향두소류화합물여1,4-분곤반응생성량성리자화합물;유사반응조건하,득도4-간기규람동량성리자화합물.4-간기향두소류화합물여2,3-이록-5,6-이청기대분곤반응획득료신적라배화합물.
The Michael reactions of 4-hydroxycoumarins with p-quinones in different conditions and their reaction mechanism have been reviewed. 4-Hydroxycoumarins reacted with 1,4-benzoquinone in aqueous acetone to afford 2,3-disubstituted-1,4-benzoquinones, with 1,4-naphthoquinone to give corresponding derivatives. The zwitterions were synthesized when 4-hydroxycoumarins reacted with 1,4-benzoquinoe in the presence of pyridine in aqueous acetone. In the similar condition, the corresponding 4-hydroxyquinolinone zwitterions were generated. The new sipro-compounds were synthesized when 4-hydroxycoumarins reacted with 2,3-dichloro-5,6- dicyanobenzoquinone