Patent ID: 7109346

Claim:
An N-phenylpyrrolebisphosphine of formula I where R 1 , R 2 , R 3 , R 4 are selected from the group consisting of aliphatic, cycloaliphatic and aromatic hydrocarbon radicals having from 1 to 25 carbon atoms, and R 1 and R 2 and/or R 3 and R 4 may be joined by one or more covalent bonds, R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 are selected from the group consisting of H, aliphatic, alicyclic, aliphatic-alicyclic, heterocyclic, aliphatic-heterocyclic, aromatic, aromatic-aromatic, and aliphaticaromatic hydrocarbon radicals having from 1 to 50 carbon atoms, and R 5 to R 11 may each be defined identically or differently and be covalently joined together, and each are selected from the group consisting of F, Cl, Br, I, —Si(CH 3 ) 3 , —CF 3 , —OR 12 , —COR 12 , —CO 2 R 12 , —CO 2 M, —SR 12 , —SO 2 R 12 , —SOR 12 , —SO 3 R 12 , —SO 3 M, —SO 2 NR 12 R 13 , NR 12 R 13 , N + R 12 R 13 R 13 , and N═CR 12 R 13 , NH 2 , where R 12 , R 13 is selected from the group consisting of H, substituted or unsubstituted aliphatic and aromatic hydrocarbon radicals having from 1 to 25 carbon atoms, each defined identically or differently, and M is selected from the group consisting of alkali metal, alkaline earth metal, ammonium, and phosphonium ion.