通过 (3 E ,5 E )-3,5-双(亚芳基)-1-甲基/苄基哌啶-4-酮的假三组分多米诺反应合成了新型双螺哌啶酮-四氢噻吩杂环化合物库和 1,4-二噻烷-2,5-二醇在三乙胺的存在下。这种转化大概是通过两个环化进行的,每个环化都涉及从 1,4-二噻烷-2,5-二醇-迈克尔加成-分子内醛醇序列生成 2-巯基乙醛,这导致在一锅操作中产生四个新键。该协议的优点是原子经济性高、立体选择性高、反应时间短、操作简单。
Green synthesis of dissymmetric bisarylidene derivatives of cyclohexanone analogues under ultrasonic conditions
作者:Mohammad M. Mojtahedi、Leila Afshinpoor、Fatemeh Karimi、M. Saeed Abaee
DOI:10.1007/s13738-018-1498-5
日期:2019.2
AbstractA new procedure is developed for the synthesis of dissymmetric bisarylidene derivatives of two cyclohexanone analogues. Under mild ultrasonic/organocatalytic conditions, the first aldehyde reacts with the ketone to give the monoarylidene intermediate which subsequently condenses with the second aldehyde upon addition of NaOH/MeOH to the reaction mixture. Both condensations proceed in one pot