Nickel-catalyzed Asymmetric Alkylation of Some Chiral and Achiral Allylic Alcohols. Preliminary communication
作者:Giambattista Consiglio、Franco Morandini、Oreste Piccolo
DOI:10.1002/hlca.19800630427
日期:1980.6.6
(Diphenylphosphino)-1-phenylethane]nickel (II) chloride was found to catalyze the asymmetric alkylation of some chiral and achiralallylicalcohols with Grignard reagents, leading to the formation of opticallyactive olefins. Enantiomer discrimination of the substrate takes place in the alkylation of chiral allylicalcohols.
A new ready route to 1,4-ketoaldehydes and 1,4-diketones with application to the synthesis of z-jasmone and dihydrojasmone
作者:V Fiandanese、G Marchese、F Naso
DOI:10.1016/0040-4039(88)85300-0
日期:1988.1
A new three-step synthesis in good overall yield of 1,4-ketoaldehydes and 1,4-diketones is described. The method involves two sequential coupling reactions of Grignard reagents with S-phenyl carbonochloridothioate in the presence of nickel(II) or iron(III) complexes as catalysts. Application of this reaction to the synthesis of Z-jasmone and dihydrojasmone is also described.