Journal of Organic Chemistry p. 3174 - 3176 (1987)
Update date:2022-08-29
Topics:
Ohta, Tetsuo
Takaya, Hidemasa
Kitamura, Masato
Nagai, Katsunori
Noyori, Ryoji
Homogeneous hydrogenation of α,β- or β,γ-unsaturated carboxylic acids in the presence of a catalytic amount of Ru<(R)- or (S)-2,2'-bis(diarylphoshino)-1,1'-binaphthyl>(OCOCH3)2 affords the corresponding saturated products in high enantiomeric excesses and in quantitative yields.The new hydrogenation has been applied to the asymmetric synthesis of (S)-naproxen, a 1β-methylcarbapenem precursor, and some methylated γ- and δ-lactones
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