Michael addition of malononitrile to indenones: Synthesis and characterization of 2-(1-oxo-2,3-dihydro-1<i>H</i>-inden-2-yl) (aryl)(methyl)malononitrile derivatives
作者:Betül Şahin、Meliha Burcu Gürdere、Mustafa Ceylan
DOI:10.1080/00397911.2017.1312450
日期:2017.6.3
ABSTRACT Indanones 3 were prepared from the reaction of indanone (1) with corresponding benzaldehyde derivatives 2, as described in the literature. Then, indenones 3 were subjected to KOtBu-catalyzed Michael addition with malononitrile to give a mixture of diastereomers 5 with a low conversion and no diastereoselection. Utilization of phase-transfer catalyst such as benzyltriethylammonium chloride
摘要 茚满酮 3 由茚满酮 (1) 与相应的苯甲醛衍生物 2 反应制备,如文献中所述。然后,茚酮 3 与丙二腈进行 KOtBu 催化的迈克尔加成反应,得到转化率低且无非对映选择的非对映异构体 5 的混合物。使用相转移催化剂如苄基三乙基氯化铵或 N-benzylcinchonidinium 氯化物对转化率和非对映选择都有积极的影响。非对映异构体 5 的结构通过光谱方法 (NMR, IR) 确定。图形概要