A method for the homogeneous catalytic enantioselective hydrogenation of alkyl and alkenyl substituted acrylic acids wherein these acids are selectively hydrogenated at the double bond alpha, beta to the acid function, said hydrogenations are catalyzed by rhodium complexes of chiral tertiary phosphines. This method provides a route to chiral dihydrogeranic acid and other intermediates useful in the synthesis of chiral vitamin E, citronellal, and menthol. Novel chiral tertiary phosphines are also disclosed.
一种均相催化对烷基和烯基取代的
丙烯酸进行不对称选择性氢化的方法,其中这些酸在酸功能团的α,β双键处被选择性地氢化,这些氢化反应由手性三膦的
铑配合物催化。该方法提供了一种合成手性双氢松酸和其他中间体的途径,这些中间体在合成手性
维生素E、
香茅醛和薄荷醇中有用。新颖的手性三膦也被揭示。