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.
一种均相催化不对称氢化烷基和烯基取代的
丙烯酸的方法,其中这些酸在酸功能团的α,β双键处被选择性氢化,这些氢化反应由手性三膦的
铑络合物催化。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,这些中间体对合成手性
维生素E、
柠檬醛和薄荷醇等具有用处。同时还公开了新型手性三膦化合物。