bifunctional monosulfonamide derivative of DACH was an effective catalyst for Michael addition–hemiacetalization reactions, providing products with ees exceeding 99% under optimized conditions. High enantioselectivities were achieved with just 0.2% mol catalyst loading. The sulfonamide outperformed analogous thiourea and squaramide-based organocatalysts.
一种易于获得的
DACH双官能单磺酰胺衍
生物是迈克尔加成-
半缩醛化反应的有效催化剂,可在优化条件下提供ee超过99%的产品。仅催化剂负载量为0.2%mol时,就可以实现高对映选择性。磺酰胺的性能优于类似的
硫脲和方胺基有机催化剂。