The strategy of stereodivergent reactions on racemic mixtures (stereodivergent RRM) was employed for the first time in intramolecular benzoin reactions and led to the rapid access of chromanones/flavanones with two consecutive stereocenters. The easily separable stereoisomers of the products were obtained with moderate to excellent enantioselectivities in a single step. Catechol type additives proved
外消旋混合物的立体发散反应策略(立体发散的RRM)是首次在分子内
安息香反应中采用,并导致
色酮/
黄酮与两个连续的立体中心快速接触。一步即可获得具有中等至优异对映选择性的产品易分离的立体异构体。
邻苯二酚型添加剂被证明对实现所需的非对映选择性和对映选择性至关重要。