| 摘要 |
A process for preparing carboxylic acid derivatives of the formula H—(C═O)—R, R is OR1 or NR2R3, R1 is optionally substituted C1-C15-alkyl, C5-C10-cycloalkyl, C5-C10-heterocyclyl, C5-C10-aryl or C5-C10-heteroaryl, substituents are C1-C15-alkyl, C1-C6-alkoxy, C5-C10-cycloalkyl or C5-C10-aryl; R2 and R3 are independently hydrogen or optionally substituted C1-C15-alkyl, C5-C10 cycloalkyl, C5-C10-heterocyclyl, C5-C10-aryl or C5-C10-heteroaryl, substituents are selected from the group consisting of C1-C15-alkyl, C5-C10-cycloalkyl and C5-C10-aryl or R2 and R3 together with the nitrogen atom form a five- or six-membered ring which optionally comprises one or more heteroatoms selected from O, S and N and bearing the substituent R4, R4 is hydrogen or C1-C6-alkyl; by reacting a reaction mixture comprising carbon dioxide, hydrogen and an alcohol of the formula R1—OH or an amine of the formula NHR2R3 in the presence of a catalyst comprising gold at a pressure from 0.2 to 30 MPa and a temperature from 20 to 200° C. in a hydrogenation reactor. |
