作者:Xiang-Yu Zhang、Lei Zheng、Bing-Tao Guan
DOI:10.1021/acs.orglett.8b03108
日期:2018.11.16
Allylic substitution reactions, a well-established approach for new bond construction, often need transition-metal catalysts and stoichiometric amounts of organometallic reagents, strong bases, or oxidants. Lithium diisopropylamide (LDA), a widely used and commercially available Brønsted base, is herein reported to catalyze the allylic C–H bond addition of 1,3-diarylpropenes to styrenes. Preliminary mechanism
烯丙基取代反应是一种用于建立新键的成熟方法,通常需要过渡金属催化剂和化学计量的有机金属试剂,强碱或氧化剂。据报道,二异丙基氨基化锂(LDA)是一种广泛使用的可商购的布朗斯台德碱,可催化1,3-二芳基丙烯与苯乙烯的烯丙基CH键加成。初步的机理研究提供了π-烯丙基锂中间体的固体结构,并揭示了LDA及其共轭酸二异丙胺的独特催化作用。