Reactions or [NH1]2MoO2S2, CuI and PPh3 in Py produced mixed-metal cluster [MoOS3Cu2(Py)2(PPh3)2], which crystallizes in the monoclinic, space group P21 / a with a= 18. 149(4), b = 10.044(3), c = 25. 171(7)A, β = 107...Reactions or [NH1]2MoO2S2, CuI and PPh3 in Py produced mixed-metal cluster [MoOS3Cu2(Py)2(PPh3)2], which crystallizes in the monoclinic, space group P21 / a with a= 18. 149(4), b = 10.044(3), c = 25. 171(7)A, β = 107.45(2)°,V = 4377(2)A3,Z= 4, Dx. = 1.54, R = 0.040, Rw= 0.049. The results of structure determination show that the central unit of the cluster compound is composed of three metal and three sulfur atoms.展开更多
Methyl 3-deoxy-3-(diphenylphosphino)-4,6-O-benzylidene-alpha-D-altropyranoside (1) and methyl 2-deoxy-2-(diphenylphosphino)-4,6-O-benzylidene-alpha-D-altropyranoside (2) were prepared from methyl 2,3-anhydro-4,6-O-ben...Methyl 3-deoxy-3-(diphenylphosphino)-4,6-O-benzylidene-alpha-D-altropyranoside (1) and methyl 2-deoxy-2-(diphenylphosphino)-4,6-O-benzylidene-alpha-D-altropyranoside (2) were prepared from methyl 2,3-anhydro-4,6-O-benzylidene-O-D-mannopyranoside and methyl 2,3-anhydro-4,6-O-benzylidene-alpha-D-allopyranoside, respectively, via regioselective and stereospecific ring-opening reactions in high yields. Compounds 1 and 2 were oxidized to give the corresponding phosphine oxides (3 and 4).展开更多
文摘Reactions or [NH1]2MoO2S2, CuI and PPh3 in Py produced mixed-metal cluster [MoOS3Cu2(Py)2(PPh3)2], which crystallizes in the monoclinic, space group P21 / a with a= 18. 149(4), b = 10.044(3), c = 25. 171(7)A, β = 107.45(2)°,V = 4377(2)A3,Z= 4, Dx. = 1.54, R = 0.040, Rw= 0.049. The results of structure determination show that the central unit of the cluster compound is composed of three metal and three sulfur atoms.
基金Project supported by the State Key Project for Fundamental Research and the National Natural Science Foundation of China.
文摘Methyl 3-deoxy-3-(diphenylphosphino)-4,6-O-benzylidene-alpha-D-altropyranoside (1) and methyl 2-deoxy-2-(diphenylphosphino)-4,6-O-benzylidene-alpha-D-altropyranoside (2) were prepared from methyl 2,3-anhydro-4,6-O-benzylidene-O-D-mannopyranoside and methyl 2,3-anhydro-4,6-O-benzylidene-alpha-D-allopyranoside, respectively, via regioselective and stereospecific ring-opening reactions in high yields. Compounds 1 and 2 were oxidized to give the corresponding phosphine oxides (3 and 4).
