Process for preparing symmetric N,N'-disubstituted aromatic urea

Details Process for preparing symmetric N,N'-disubstituted aromatic urea Process for preparing symmetric N,N'-disubstituted aromatic urea

1991-10-22

1993-03-30

Raymond, Richard L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

564 47, 564 48, 564 53, 564 54, 564 55, C07C27528, C07C27530

Patent

active

051985829

ABSTRACT:
A process for preparing N,N'-disubstituted urea derivatives of the following formula (I) ##STR1## wherein Ar represents an unsubstituted aromatic radical or an aromatic radical substituted with a halogen atom, an alkyl group, or an alkoxy group, which comprises reacting an aromatic mono-nitro compound, an aromatic primary amine, and synthesis gas in the presence of a catalyst consisting essentially of a divalent palladium compound as a main catalyst component and an ammonium or a phosphonium salt containing halogen atom as a co-catalyst component, and a non-polar solvent.

REFERENCES:
patent: 4052454 (1977-10-01), Zajacek et al.
patent: 4603216 (1986-07-01), Grate et al.
patent: 5091571 (1992-02-01), Lee et al.
Oh et al. Ind. Eng. Chem. Res. 1991, 30, 1456-1461.
Fukuoka et al., Chem Tech Nov. 1984, 670-676.
Franz et al. J. Org Chem, vol. 26, 3309, 1961.
Dieck et al, J. Org. Chem., vol. 40, No. 19, 1975, 2819-2822.
Matthys et al., Inorganic Chemistry, vol. 9, No. 2, Feb. 1970, 342-345.

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