P-Trifluoromethyl ligands derived from Josiphos in the Ir-catalysed hydrogenation of 3,4-dihydroisoquinoline hydrochlorides
作者:R. Schwenk、A. Togni
DOI:10.1039/c5dt02019k
日期:——
Ferrocenyl phosphines containing a stereogenic P-CF3 group show improved selectivities in the Ir-catalysed hydrogenation of dihydroisoquinolinium derivatives.
含有手性P-CF3基团的二茂铁磷化物在铱催化的二氢异喹啉衍生物加氢反应中显示出改善的选择性。
2-Acylstyrenes from 3,4-Dihydroisoquinolines<sup>1</sup>
作者:Walter J. Gensler、Edward M. Healy、Inger Onshuus、Aaron L. Bluhm
DOI:10.1021/ja01589a063
日期:1956.4
Gardent,J., Bulletin de la Societe Chimique de France, 1960, p. 114 - 118
作者:Gardent,J.
DOI:——
日期:——
NAGUBANDI SREERAMULU; FODOR G., J. HETEROCYCL. CHEM., 1980, 17, NO 7, 1457-1463
作者:NAGUBANDI SREERAMULU、 FODOR G.
DOI:——
日期:——
The Development of an Asymmetric Hydrogenation Process for the Preparation of Solifenacin
The successful development of a catalytic imine asymmetrichydrogenation process for the reduction of the hydrochloride salt of 1-phenyl-3,4-dihydroisoquinoline to 1-(S)-phenyl-1,2,3,4-tetrahydroisoquinoline is described. This represents a novel approach to the key intermediate in preparing the urinary antispasmodic drug solifenacin, (1S)-(3R)-1-azabicyclo[2.2.2]oct-3-yl-3,4-dihydro-1-phenyl-2(1H)-isoquinoline
描述了催化亚胺不对称氢化方法的成功发展,该方法用于将1-苯基-3,4-二氢异喹啉的盐酸盐还原为1-(S)-苯基-1,2,3,4-四氢异喹啉。这代表了制备尿液解痉药物索非那新(1 S)-(3 R)-1-氮杂双[2.2.2] oct-3-yl-3,4-dihydro-1-phenyl的关键中间体的新方法-2(1 H)-异喹啉羧酸酯。通过广泛的催化剂筛选以及溶剂和添加剂的组合,确定了合适的反应条件。最佳反应条件:[Ir(COD)Cl] 2-(S)-P-Phos,底物与催化剂的摩尔比(S / C)> 1000/1,THF,H当量1-2以200 g规模复制了60℃,20 bar H 2的3 PO 4(95%分离的收率,98%ee和> 99%HPLC产物纯度)。