Optically active .alpha.- and .beta.-naphthalene derivatives. 5. Stereochemical course of the Haworth-type synthesis of optically active 2-(1-methylpropyl)naphthalene
Functional-Group-Tolerant, Nickel-Catalyzed Cross-Coupling Reaction for Enantioselective Construction of Tertiary Methyl-Bearing Stereocenters
作者:Hanna M. Wisniewska、Elizabeth C. Swift、Elizabeth R. Jarvo
DOI:10.1021/ja4034999
日期:2013.6.19
The first Negishi nickel-catalyzed stereospecific cross-coupling reaction of secondary benzylic esters is reported. A series of traceless directing groups is evaluated for ability to promote cross-coupling with dimethylzinc. Esters with a chelating thioether derived from commercially available 2-(methylthio)acetic acid are most effective. The products are formed in high yield and with excellent stereospecificity
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
Stereospecific Nickel-Catalyzed Cross-Coupling Reactions of Alkyl Ethers: Enantioselective Synthesis of Diarylethanes
作者:Buck L. H. Taylor、Elizabeth C. Swift、Joshua D. Waetzig、Elizabeth R. Jarvo
DOI:10.1021/ja108547u
日期:2011.1.26
Secondary benzylic ethers undergo stereospecificsubstitutionreactions with Grignard reagents in the presence of nickel catalysts. Reactions proceed with inversion of configuration and high stereochemical fidelity. This reaction allows for facile enantioselective synthesis of biologically active diarylethanes from readily available optically enriched carbinols.
Optically active α- and β- naphthalene derivatives-III,
作者:R. Menicagli、O. Piccolo、L. Lardicci、M.L. Wis
DOI:10.1016/0040-4020(79)80057-5
日期:1979.1
Optically active 2-(α- and β-naphthyl)-butanes were prepared starting from 2-(α- and β-naphthyl)-propionic acid. Their relative configurations and maximum rotatory powers were chemically established by relating them to know naphthalene derivatives and (S)-2-methyl-butan-1-ol.