The addition of aryl- or alkenyl-trimethylstannanes to α,β-unsaturated carbonylcompounds in the presence of a catalytic amount of a cationic rhodium complex ([Rh(cod)(MeCN)2]BF4) and water to afford the conjugateaddition products in good yields was examined. It was observed that addition of water was necessary for the reaction to proceed smoothly. The aryl- or alkenyl-rhodium complex, which is generated
Unlocking the Asymmetric Hydrogenation of Tetrasubstituted Acyclic Enones
作者:Jorge Faiges、Maria Biosca、Miquel A. Pericàs、Maria Besora、Oscar Pàmies、Montserrat Diéguez
DOI:10.1002/anie.202315872
日期:2024.2.26
Fast and highly selective Ir-catalysts have been developed for the asymmetric hydrogenation of challenging tetrasubstituted acyclicenones. The mechanism and the effects of the catalyst and reaction parameters on selectivity have been unraveled by means of deuterogenation experiments and DFT calculations.