Alkynyl-Dicobalt Hexacarbonyl Complexes of Menthyl Cations: Isolobal Substitution of [Co(CO)<sub>3</sub>]<sup>+</sup> by Fe(CO)<sub>3</sub> as a Structural Model
作者:Angela Moore、Yannick Ortin、Helge Müller-Bunz、Michael J. McGlinchey
DOI:10.1021/om100107x
日期:2010.11.8
The addition of phenylethynyl- or trimethylsilylethynyl-lithium to (−)-menthone yields primarily the alkynyl-menthols in which the alkynyl substituent occupies an equatorial site. The stereochemistry of both the axial and equatorial isomers was established unequivocally by an X-ray crystallographic study of their dicobalt hexacarbonyl derivatives. Treatment of these alkynol-Co2(CO)6 complexes with
Efficient syntheses of optically active 2-arylalkanoic acids
作者:Christian Beaulieu、Claude Spino
DOI:10.1016/s0040-4039(99)00055-6
日期:1999.2
A highly enantioselective synthesis of 2-arylpropanoic acid was achieved, using a new developed methodology of cuprate addition to chiral carbonates derived from menthone.
使用新开发的将铜酸盐加成于薄荷酮的手性碳酸酯中的新方法,实现了2-芳基丙酸的高度对映选择性合成。
Philippe,J. et al., Bulletin de la Societe Chimique de France, 1971, p. 2248 - 2255
作者:Philippe,J. et al.
DOI:——
日期:——
Chiral α-Substituted Carbonyls and Alcohols from the S<sub>N</sub>2‘ Displacement of Cuprates on Chiral Carbonates: An Alternative to the Alkylation of Chiral Enolates
A highlystereoselective sequence of reactions, based on the anti-selective S(N)2' addition of cuprates to allylic carbonates, transforms alkynes or alkenyl halides into carbonyls having alpha-chiral centers. The method, which uses menthone as a chiral auxiliary, is a useful alternative to the alkylation of chiralenolates with the added advantage of allowing for the "alkylation" of sec- and tert-alkyl