Process for the coproduction of anilines and oxamides

Details Process for the coproduction of anilines and oxamides Process for the coproduction of anilines and oxamides

C - Chemistry, Metallurgy

07

C

260/600, 260/474

C07C 209/32 (2006.01) C07C 211/46 (2006.01) C07C 233/00 (2006.01) C07C 237/00 (2006.01)

Patent

CA 1336838

A process for the coproduction of anilines of the formula Image (I) wherein X is a halogen atom, an alkyl-, alkoxy-, aryloxy-, cyano-, ester- or trifluoromethyl qroup and n is an integer from 0 to 5, and oxamides of the formula Image (II) wherein each R independentlv is an alkyl group which comprises reacting an aromatic nitro compound of the general formula Image (III) wherein X and n are as defined above with carbon monoxide and a molar excess in relation to the nitro compound of an amine HNR2 wherein R is an alkyl group, in the presence of a catalyst system comprising (a) palladium metal or a compound thereof, (b) a bidentate ligand of the formula R1R2--M--A--M--R3R4 in which M is P, As or Sb, A is a divalent organic bridging group having at least 2 carbon atoms in the bridge, none of these carbon atoms carrying substituents that may cause steric hindrance, and R1, R2, R3 and R4 represent similar or dissimilar optionally substituted hydrocarbon groups, and (c) an acid or a transition metal salt of said acid.

566119

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