Reactions of carbanions from 2-(dialkylamino)-arylacetonitriles with acetylene - simple syntheses of 1,3-dienamines and 1,4-diketones1
作者:Andrzej Jończyk、Dariusz Lipiak、Tadeusz Zdrojewski
DOI:10.1016/s0040-4020(01)81381-8
日期:1990.1
reacts with acetylene (2) in the presence of solid sodium hydroxide and tetrabutylammonium bromide (TBABr) as a catalyst, in DMSO, to give the vinyl derivative 3a. Whereas aminonitriles 1b-i, in the reaction with 2, afford dienamines 7. The different reactivity of 1a as compared to 1b-i is explained in terms of the different basicity of the amino moiety in vinyl derivatives 3. Dienamines 7 were hydrolyzed
已经发现吗啉腈1a在固体氢氧化钠和四丁基溴化铵(TBABr)作为催化剂存在下,在DMSO中与乙炔(2)反应,得到乙烯基衍生物3a。而氨基腈1b-i在与2的反应中提供二烯胺7。用乙烯基衍生物3中氨基部分的不同碱性解释了1a与1b-i不同的反应性。将二烯胺7以高产率水解为1,4-二芳基丁丹-1,4-二酮8。