2,2'-bis(diphenylphosphino)-5,5',6,6',7,7',8,8'-octahydro-1 ,1'-binaphthyl and transition metal complex containing the same as ligand
AssigneeTakasago International Corporation
InventorsNoboru Sayo, Hidenori Kumobayashi
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Abstract
2,2'-Bis(diphenylphosphino)-5,5',6,6',7,7',8,8'-octahydro-1,1'-binaphthyl represented by formula (I). ##STR1## is disclosed. A transition metal complex containing the same, a process for producing 2,2'-Bis(diphenylphosphino)-5,5',6,6',7,7',8,8'-octahydro-1,1'-binaphthyl, and a process for producing 2,2'-bis(diphenylphosphinyl)-5,5',6,6',7,7',8,8'-octahydro-1,1'-binaphthyl are also disclosed.
Claims6
2,2'-Bis(dipheny lphosphino)-5,5',6,6',7,7',8,8'-octahydro-1,1'-binaphthyl represented by formula (I). ##STR6##
A transition metal complex comprising a transition metal and 2,2'-bis(diphenylphosphino)-5,5',6,6',7,7',8,8'-octahydro-1,1'-binaphthyl as a ligand.
A 5,5',6,6',7,7',8,8'-octahydro-1,1'-binaphthyl derivative represented by formula (II):
- ##STR7## wherein R.sup.1 represents a halogen atom, a halogenated magnesium, or ##STR8##
A process for producing a 2,2'-dihalogeno-5,5',6,6', 7,7',8,8'-octahydro-1,1'-binaphthyl, which comprises hydrogenating a 2,2'-dihalogeno-1,1'-binaphthyl in the presence of a ruthenium-on-carbon catalyst.
A process for producing 2,2'-bis(diphenylphosphoryl)-5,5',6,6',7,7',8,8'-octahydro-1,1'-binaphthyl , which comprises hydrogenating a 2,2'-dihalogeno-1,1'-binaphthyl in the presence of a ruthenium-on-carbon catalyst and subsequently reacting the hydrogenation product with metallic magnesium and then with a diphenylphosphinyl halide.
Dependencies are inferred from the claim text.