Synthesis and characterisation of a suite of four chiral pyridyl alcohols derived from (−)-menthol
作者:Desmond Cunningham、Eva T. Gallagher、David H. Grayson、Patrick J. McArdle、Christina B. Storey、Deborah J. Wilcock
DOI:10.1039/b205872n
日期:——
Reaction of menthylmagnesium chloride with pyridine-2-carbaldehyde gives a mixture of four isomeric chiral menthyl- and neomenthyl-substituted pyridylcarbinols which were fully characterised by a combination of spectroscopic and X-ray crystallographic methods. All of these alcohols catalyse the addition of diethylzinc to benzaldehyde, but with disappointing enantioselectivities.
薄荷基氯化镁与吡啶-2-甲醛反应,得到四种异构手性薄荷基和新薄荷基取代的吡啶基甲醇的混合物,并通过光谱和 X 射线晶体学方法的组合对其进行了充分表征。所有这些醇都催化二乙基锌与苯甲醛的加成,但对映选择性令人失望。