Asymmetric hydrogenation of unsaturated carbonyl compounds catalyzed by BINAP-Ru(II) complexes. Enantioselective synthesis of γ-butyrolactones and cyclopentanones
作者:Tetsuo Ohta、Tsutomu Miyake、Nobuo Seido、Hidenori Kumobayashi、Susumu Akutagawa、Hidemasa Takaya
DOI:10.1016/s0040-4039(00)92330-x
日期:1992.1
Asymmetric hydrogenation of 2- and 4-alkylidene-γ-butyrolactones and 2-alkylidenecyclopentanones catalyzed by BINAP—Ru(II) complexes affords the corresponding γ-butyrolactones and cyclopentanones in 94–98% ee. Hydrogenation of (E)- and (Z)-2-propylidene-γ-butyrolactone catalyzed by the same catalyst gave the products with the same absolute configuration and in almost equal enantioselectivities, which
BINAP-Ru(II)配合物催化2-和4-亚烷基-γ-丁内酯和2-亚烷基环戊酮的不对称加氢,可得到94-98%ee的相应γ-丁内酯和环戊酮。在同一催化剂下催化的(E)-和(Z)-2-亚丙基-γ-丁内酯的加氢反应得到的产物具有相同的绝对构型和几乎相等的对映选择性,这表明烯烃的几何形状不会影响立体化学和对映选择性。