Design and synthesis of new alkyl‐based chiral phosphoric acid catalysts
作者:Xiaoxue Tang、Hualing He、Xiantao Fang、Zexu Chang、Jon C. Antilla
DOI:10.1002/chir.23101
日期:2019.8
Using chiral BINOL‐derived phosphoric acids (PA's) to activate substrates for enhanced reactivity is now regarded as a powerful strategy to control enantioselectivity in asymmetric synthesis. Generally, most substituents at the 3,3′‐positions of BINOL PA's are aryl derivatives. These derivatives are pivotal in attaining high selectivity. PA's with alkyl substituents in these positions have rarely been