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。