Newly developed ClickFerrophos II ligands were applied in the hydrogenation of alpha,beta-unsaturated phosphonates. The use of a rhodium/ClickFerrophos II catalyst was examined in the hydrogenation of fimctionalized alpha,beta-unsaturated phosphonates and was revealed to be effective for beta-alkyl-beta-aryl or beta-dialkyl phosphonates, (Z)-beta-enolester phosphonates, and alpha-phenylethenyl phosphonates, producing the corresponding chiral phosphonates in good yields with high enantioselectivities (up to 96% ee).
Sakhibullina, V. G.; Polezhaeva, N. A.; Arbuzov, B. A., Journal of general chemistry of the USSR, 1984, vol. 54, p. 906 - 910
作者:Sakhibullina, V. G.、Polezhaeva, N. A.、Arbuzov, B. A.
DOI:——
日期:——
SAXIBULLINA, V. G.;POLEZHAEVA, N. A.;ARBUZOV, B. A., ZH. OBSHCH. XIMII, 1984, 54, N 5, 1016-1020
作者:SAXIBULLINA, V. G.、POLEZHAEVA, N. A.、ARBUZOV, B. A.
DOI:——
日期:——
Highly Enantioselective Hydrogenation of β-Acyloxy and β-Acylamino α,β-Unsaturated Phosphonates Catalyzed by Rhodium Phosphane-Phosphite Complexes
The enantioselectivehydrogenation of β-(acyloxy)- and β-(acylamino)vinylphosphonates with rhodium catalysts based on chiral phosphane-phosphite ligands has been studied. In the case of the β-(acyloxy)vinylphosphonates, the reaction also produces an achiral phosphonate resulting from the elimination of the benzoate group. High ligand modularity has led to a highly chemo- and enantioselective catalyst