Phospholane–Oxazoline Ligands for Ir-Catalyzed Asymmetric Hydrogenation
作者:Wenjun Tang、Weimin Wang、Xumu Zhang
DOI:10.1002/anie.200390251
日期:2003.2.24
Optically active α- and β-naphthalene derivatives—IV
作者:O. Piccolo、R. Menicagli、L. Lardicci
DOI:10.1016/0040-4020(79)88004-7
日期:1979.1
The (S) methyl 3-(α- and β-naphthyl)-butanoates have been related to the optically active title compounds and to 2-(α- and β-naphthyl)-butanoic-, -3-methylbutanoic- and -3,3-dimethylbutanoic acids. The absolute configurations and maximum rotatorypowers (this is in fact, all that has been measured, in terms of rotatory power) of the naphthyl hydrocarbons and their related compounds have been established
1,6-Asymmetric Induction during the Conjugate Addition of Arylcopper Reagents to a Chiral Sulfinyl-Substituted Pyrrolyl .ALPHA., .BETA.-Unsaturated Amide.
The asymmetric conjugate addition of arylcopper reagents derived from arylGrignardreagents and copper(I) iodide to a chiral 1-[2-(p-tolylsulfinyl)]pyrrolyl cinnamide proceeded smoothly to give (3R)-adducts with high diastereoselectivities (> or =92% de) in high yields. Conjugate additions either of the cinnamide with the alkyl Grignard reagent-copper(l) iodide combination or of the crotonamide derivative