Regioselective Synthesis of Heterospirocyclic Isobenzofuranones and Medium-Sized Lactones by Multiple Anion Capture Reactions of 1,3-Dianions
作者:Peter Langer、Manfred Döring、Helmar Görls
DOI:10.1002/1099-0690(200104)2001:8<1511::aid-ejoc1511>3.0.co;2-d
日期:2001.4
diethylmalonic dichloride afforded six- to eight-membered lactones. Treatment of the dianion of 3-acetylindole with benzophenone and diethylmalonic dichloride resulted in the formation of a cyclic 1,3,5-triketooctene. The reaction of 1,3-dianions with ketones and phthalic dichloride resulted in the formation of heterospirocyclic isobenzofuranones rather than of medium-sized rings.
1,3-二价阴离子与酮和草酸二氯化物或二乙基丙二酸二氯酯的多组分反应得到六元至八元内酯。用二苯甲酮和二乙基丙二酸二氯化物处理3-乙酰基吲哚的二价阴离子导致形成环状1,3,5-三酮辛烯。1,3-二价阴离子与酮和二氯化邻苯二甲酸的反应导致形成异螺环异苯并呋喃酮,而不是中等大小的环。