In control! Eliminative cross-coupling between enantioenriched lithiated allylic carbamates and enantioenriched α-carbamoyloxyalkyl boronates provides for a stereospecific synthesis of 1,2,4-trisubstituted 1,3-butadienes. Any geometrical isomer of the conjugated diene product is available by an appropriate combination of stereochemical configurations within the carbenoid substrates and the type of elimination
掌控之中!对映体富集的
锂化
烯丙基氨基甲酸酯和对映体富集的α-
氨基甲酰氧基烷基
硼酸酯之间的消除交叉偶联提供了 1,2,4-三取代的
1,3-丁二烯的立体有择合成。共轭二烯产物的任何几何异构体都可以通过类卡宾底物中的立体
化学构型和触发的消除机制类型(顺式或反式)的适当组合获得。