Romanelli Gustavo P., Autino Juan C., Vitale Arturo A., Pomilio Alicia B., J. Chem. Res. Synop, (1993) N 9, S 386-387
作者:Romanelli Gustavo P., Autino Juan C., Vitale Arturo A., Pomilio Alicia B.
DOI:——
日期:——
Facile access to chiral 4-substituted chromanes through Rh-catalyzed asymmetric hydrogenation
作者:Lin Tao、Qingyang Zhao、Xumu Zhang、Xiu-Qin Dong
DOI:10.1016/j.cclet.2020.01.001
日期:2020.7
Rh/ZhaoPhos-catalyzed asymmetrichydrogenation of a series of (E)-2-(chroman-4-ylidene)acetates was successfully developed to prepare various chiral 4-substituted chromanes with high yields and excellent enantioselectivities (up to 99% yield, 98% ee). Moreover, the gram-scale hydrogenation could be performed well in the presence of 0.02 mol% catalyst loading (TON = 5000), the hydrogenation product was easily