2) acetal
[英]['æsitæl] [美]['æsə,tæl]
缩醛;醛酸醇
3) aldol condensation
醇醛缩合
1.
E,4E ) 2,4 dimethyl 5 ( p nitrophenyl)penta 2,4 dienoic acid and (2 E,4E ) 2,4 dimethyl 5 ( m nitrophenyl)penta 2,4 dienoic acid,potential antibiotics,were synthesized through aldol condensation and Perkin reaction in two steps,( 2E,4E ) 2,4 dimethyl 5 ( m nitrophenyl)penta 2,4 dienoic acid is a new compound and its structure was confirmed by IR and 1HNMR spectral analysis.
以取代苯甲醛为原料，采用醇醛缩合反应和珀金反应完成了反，反－２，４－二甲基－５－（对硝基苯基）－戊－２，４－二烯酸（３ａ）和反，反－２，４－二甲基－５－（间硝基苯基）－戊－２，４－二烯酸（３ｂ）的有效全合成，并确定了最佳反应条件。
2.
Using substituted benzaldehyde as starting materials, 2-methyl-3- (4 - nitrophenyl) allyl-triph- enylphosphonium bromide and 2-methyl-3-(3-nitrophenyl ) allyl-triphenylphosphonium bromide, intermedi-ates of potential antibiotics, were synthesized through Aldol condensation, reduction, bromization, etc.
取代苯甲醛经醇醛缩合、硼氢化还原、溴代反应和成盐反应合成了２-甲基-３-间硝基苯基烯丙基三苯基溴化特和２-甲基-３-对硝基苯基烯丙基三苯基溴化鏻两个化合物，收率分别达８６。
4) aldol condensation
醛醇缩合
6) semiacetals
醛缩一醇
