作者:Bingfei Peng、Jiguo Ma、Jianhua Guo、Yating Gong、Ronghao Wang、Yi Zhang、Jinlong Zeng、Wen-Wen Chen、Kuiling Ding、Baoguo Zhao
DOI:10.1021/jacs.1c12723
日期:2022.2.23
chiral super Brønsted C–H acids, BINOL-derived phosphoryl bis((trifluoromethyl)sulfonyl) methanes (BPTMs), were developed. As compared to widely utilized BINOL-derived chiral phosphoric acids (BPAs) and N-triflyl phosphoramides (NTPAs), BPTMs displayed much higher Brønsted acidity, resulting in dramatically improved activity and excellent enantioselectivity as demonstrated in catalytic asymmetric Mukaiyama–Mannich
开发了一种新型手性超级布朗斯台德 C-H 酸,即 BINOL 衍生的磷酸双((三氟甲基)磺酰基)甲烷 (BPTMs)。与广泛使用的 BINOL 衍生的手性磷酸 (BPA) 和N -triflyl 磷酰胺 (NTPAs) 相比,BPTM 表现出更高的布朗斯台德酸度,从而显着提高活性和优异的对映选择性,如催化不对称 Mukaiyama-Mannich 反应、烯丙基胺化,烯丙基三甲基硅烷与 9-芴基甲基氨基甲酸酯和醛的三组分偶联,以及甲硅烷基烯醇醚的质子化。这些新的强 Brønsted C-H 酸为扩展不对称 Brønsted 酸催化的化学性质提供了一个平台。