Asymmetric Transfer Hydrogenation of Benzaldehydes
摘要:
[GRAPHICS]A combined system of RuCl[(R,R)-YCH(C6H5)CH(C6H5)NH2](eta (6)-arene) (Y = NSO2C6H4-4-CH3 or O) and t-C4H9OK catalyzes the asymmetric transfer hydrogenation of various benzaldehyde-1-d derivatives with 2-propanol to yield (R)-benzyl-1-d alcohols in 95-99% ee and with >99% isotopic purity. Reaction of benzaldehydes with a DCO2D-triethylamine mixture and the R,R catalyst affords the S deuterated alcohols in 97-99% ee.
A new chiral catalyst for the enantioselective synthesis of secondary alcohols and deuterated primary alcohols by carbonyl reduction
作者:E.J. Corey、John O. Link
DOI:10.1016/s0040-4039(01)93871-7
日期:1989.1
efficient synthesis of(S)-(−)-2-(di-β-naphthylhydroxymethyl)pyrrolidine (1) makes available the oxazaborolidine derivatives2 and3 which are excellent catalysts for borane reduction of a variety of achiral ketones to chiral secondary alcohols, e.g. acetophenone, 98% ee; α-tetralone, 95% ee; and methyl-4-oxo-4-phenyl butyrate, 96% ee. The synthesis of chiral 1-deuterio primary alcohols fromachiral aldehydes
COREY, E. J.;LINK, JOHN O., TETRAHEDRON LETT., 30,(1989) N6, C. 6275-6278
作者:COREY, E. J.、LINK, JOHN O.
DOI:——
日期:——
A Very Reliable Method for Determination of Absolute Configuration of Chiral Secondary Alcohols by <sup>1</sup>H NMR Spectroscopy
作者:Yoshio Takeuchi、Hidehito Fujisawa、Ryoji Noyori
DOI:10.1021/ol0479489
日期:2004.11.1
Surprisingly stable synperiplanar conformers of CFTA esters have led us to develop a new and very reliable method for assigning absoluteconfigurations of even secondaryalcohols having minimal structural differences, such as chiral benzhydrols and alpha-monodeuterated benzyl alcohols.
Asymmetric Transfer Hydrogenation of Benzaldehydes
作者:Issaku Yamada、Ryoji Noyori
DOI:10.1021/ol0002119
日期:2000.11.1
[GRAPHICS]A combined system of RuCl[(R,R)-YCH(C6H5)CH(C6H5)NH2](eta (6)-arene) (Y = NSO2C6H4-4-CH3 or O) and t-C4H9OK catalyzes the asymmetric transfer hydrogenation of various benzaldehyde-1-d derivatives with 2-propanol to yield (R)-benzyl-1-d alcohols in 95-99% ee and with >99% isotopic purity. Reaction of benzaldehydes with a DCO2D-triethylamine mixture and the R,R catalyst affords the S deuterated alcohols in 97-99% ee.