Catalyst-Controlled Chemodivergent Synthesis of Spirochromans from Diarylideneacetones and Organoboronic Acids
作者:Na Liu、Wanjiang Zhu、Jian Yao、Long Yin、Tao Lu、Xiaowei Dou
DOI:10.1021/acscatal.9b05577
日期:2020.2.21
chemodivergent synthesis of two series of spirochromans depending on the catalytic system was developed. Starting from diarylideneacetones and organoboronic acids, asymmetric rhodium catalysis led to the enantioselective synthesis of 4,4′-disubstituted 2,2′-spirobichromans, while acid catalysis led to the formation of 4-substituted spirochroman-2,2′-chromenes. A plausible mechanism of the chemodivergent
根据催化体系,开发了两个系列螺吡喃的化学发散合成。从二亚芳基丙酮和有机硼酸开始,不对称铑催化导致对映选择性合成4,4'-二取代的2,2'-螺双色烷,而酸催化导致形成4-取代的螺并吡喃-2,2'-色烯。提出了化学发散合成的合理机制。