Precise structure activity relationships in asymmetric catalysis using carbohydrate scaffolds to allow ready fine tuning: dialkylzinc–aldehyde additions
作者:Daniel P. G. Emmerson、Renaud Villard、Claudia Mugnaini、Andrei Batsanov、Judith A. K. Howard、William P. Hems、Robert P. Tooze、Benjamin G. Davis
DOI:10.1039/b309715n
日期:——
carbohydrate ligand structures from a core D-glucosamine scaffold has allowed the evaluation of broad ranging structure activity relationships in ligand accelerated zincate additions to aldehydes, with variations in deltadeltaG+/+(R-S) of up to 5650 J mol(-1) that create opposing senses of asymmetric induction and that are consistent with models based on several ligand X-ray structures and molecular mechanics