摘要
以碳酸钾为碱,以N,N-二甲基甲酰胺为溶剂,乙酰丙酮与二硫化碳及1,2-二溴苯乙烷反应,以中等产率(47%)合成了3-(4-苯基-1,3-二硫戊环-2-亚甲基)-2,4-戊二酮2.碱性条件下,化合物2比较稳定,通过对碱的选择和芳醛量的控制,化合物2与芳醛缩合可分别以较高的产率合成单面和双面缩合产物1d和1e.
3-(4-Phenyl-l,3-dithiolan-2-ylidene) pentane-2,4-dione (2) was prepared in moderate (47 % ) yield by the reaction of acetylacetone with carbon disulfide and 1-(1,2-dibrornoethyl) benzene u- sing potassium carbonate as base. Under the optimized conditions, the condensation of compound 2 with arylaldehydes led to the corresponding products α-acetyl-a'cinnamoyl ketene dithioacetals l d and α,α'- dicinnamoyl ketene dithioacetals le, respectively, in high to excellent yields.
出处
《华东师范大学学报(自然科学版)》
CAS
CSCD
北大核心
2008年第4期109-113,139,共6页
Journal of East China Normal University(Natural Science)
基金
国家自然科学基金(20272008)