Baylis–Hillman acetates in carbocyclic synthesis: a convenient protocol for synthesis of densely substituted indenes
作者:Deevi Basavaiah、Bhavanam Sekhara Reddy、Harathi Lingam
DOI:10.1016/j.tet.2012.12.069
日期:2013.2
A simple and facile strategy for synthesis of densely substituted indenes have been developed from Baylis–Hillman acetates in a two step protocol, that is, (1) via treatment with DABCO and then reaction with alkyl 3-oxobutanoates in the presence of K2CO3 (2) followed by the intramolecular Friedel–Crafts cyclization of the resulting keto-diesters using titanium tetrachloride.
从Baylis-Hillman乙酸盐的两步方案开发了一种简单且简便的合成密集取代的茚酯的策略,即(1)通过用DABCO处理,然后在K 2 CO存在下与3-氧代丁酸烷基酯反应3(2),然后使用四氯化钛对所得的酮-二酯进行分子内Friedel-Crafts环化。