3(4),7(8)-Bis(aminomethyl)bicyclo[4.3.0]nonane and a process for its preparation
View Patent ↗3(4),7(8)-bis(aminomethyl)bicyclo[4.3.0]nonane and a process for its preparation, wherein bicyclo[4.3.0]nona-3,7-diene is reacted with synthesis gas in a homogeneous organic phase in the presence of transition metal compounds of Group VIII of the Periodic Table containing complex-bound organophosphorus compounds, and excess organophosphorus compound, at temperatures of 70 to 160° C. and pressures of 5 to 35 MPa, and the 3(4),7(8)-bisformylbicyclo[4.3.0]nonane thus obtained is reductively aminated.
1. A process for preparing 3(4),7(8)-bis(aminomethyl)bicyclo[4.3.0]nonane by hydroformylating bicyclo[4.3.0]nona-3,7-diene with subsequent reductive amination, comprising reacting bicyclo[4.3.0]nona-3,7-diene with synthesis gas in a homogeneous organic phase in the presence of transition metal compounds of Group VIII of the Periodic Table containing complex-bound organophosphorus compounds, and excess organophosphorus compound, at temperatures of 70 to 160° C. and pressures of 5 to 35 MPa, and then reductively aminating the 3(4),7(8)-bisformylbicyclo[4.3.0]nonane thus obtained to form 3(4),7(8)bis(aminomethyl)bicyclo[4.3.0]nonane.
2. The process of claim 1 , wherein the organophosphorus compounds are organic phosphorus (III) compounds selected from the group consisting of triarylphosphines, trialkylphosphines, alkylarylphosphines, alkyl phosphites, aryl phosphites, alkyl diphosphites and aryl diphosphites.
3. The process of claim 2 , wherein the triarylphosphine used is triphenylphosphine and the aryl phosphite used is tris(2-tert-butylphenyl)phosphite or tris(2-tert-butyl-4-methylphenyl)phosphite.
4. The process of claim 1 , wherein the transition metal compounds of Group VIII of the Periodic Table used are selected from the group consisting of compounds of rhodium, cobalt, iridium, nickel, palladium, platinum, iron and ruthenium.
5. The process of claim 1 , wherein the transition metal compounds of Group VIII of the Periodic Table used are compounds of rhodium.
6. The process of claim 1 , wherein rhodium is used in a concentration of from 5 to 1000 ppm by weight based on the homogeneous reaction mixture.
7. The process of claim 6 , wherein rhodium is used in a concentration of 10 to 700 ppm by weight, based on the homogeneous reaction mixture.
8. The process of claim 1 , wherein the molar ratio of rhodium to phosphorus is 1:5 to 1.200.
9. The process of claim 8 , wherein the molar ratio of rhodium to phosphorus is 1:10 to 1:100.
10. The process of claim 1 , wherein the hydroformylation is performed at temperatures 80 to 150° C., and at pressures of 10 to 30 MPa.
11. The process of claim 1 , wherein the reductive amination is performed in the presence of nickel catalysts at temperatures of 60 to 150° C. and at a hydrogen pressure of 2 to 12 MPa.
12. The process of claim 11 , wherein the diazomethine formed from 3(4),7(8)-bisformylbicyclo[4.3.0]nonane and a primary amine of 2 to 10 carbon atoms in the molecule is used for the reductive amination.
13. The process of claim 7 wherein rhodium is used at 20 to 500 ppm by weight.
14. The process of claim 10 wherein the temperature is 90 to 140° C. and the pressure is 20 to 30 MPa.
15. 3(4),7(8)-bis(aminomethyl)bicyclo[4.3.0]nonane.