abstract |
The present invention relates to compounds of formula I and their use as ligands in alkoxycarbonylation. (I) In this formula, m and n are each independently 0 or 1; R 1 , R 2 , R 3 and R 4 are each independently - (C 1 -C 12 ) -alkyl, - (C 3 -C 12 ) -cycloalkyl, - (C 3 -C 12 ) -heterocycloalkyl - (C 6 -C 20 ) -aryl, - (C 3 -C 20 ) -heteroaryl; At least one of the R 1 , R 2 , R 3 , R 4 radicals is a - (C 3 -C 20 ) -heteroaryl radical; Wherein R 1 , R 2 , R 3 and R 4 are - (C 1 -C 12 ) -alkyl, - (C 3 -C 12 ) -cycloalkyl, - (C 3 -C 12 ) -heterocycloalkyl, - C 6 -C 20) - aryl or - (C 3 -C 20) - If the heteroaryl group, all of which are each independently - (C 1 -C 12) - alkyl, - (C 3 -C 12) - cycloalkyl, - (C 3 -C 12) - heterocycloalkyl, -O- (C 1 -C 12) - alkyl, -O- (C 1 -C 12) - alkyl, - (C 6 -C 20) - aryl, -O - (C 3 -C 12) - cycloalkyl, -S- (C 1 -C 12) - alkyl, -S- (C 3 -C 12) - cycloalkyl, -COO- (C 1 -C 12) - alkyl, -COO- (C 3 -C 12) - cycloalkyl, -CONH- (C 1 -C 12) - alkyl, -CONH- (C 3 -C 12) - cycloalkyl, -CO- (C 1 - C 12) - alkyl, -CO- (C 3 -C 12) - cycloalkyl, -N - [(C 1 -C 12) - alkyl] 2, - (C 6 -C 20) - aryl, - (C 6 -C 20) - aryl - (C 1 -C 12) - alkyl, - (C 6 -C 20) - aryl -O- (C 1 -C 12) - alkyl, - (C 3 -C 20) - heteroaryl, - (C 3 -C 20) - heteroaryl, - (C 1 -C 12) - alkyl, - (C 3 -C 20) - heteroaryl, -O- (C 1 -C 12) - alkyl, - COOH, -OH, -SO 3 H, -NH 2, 1 or more selected from halogen It may be substituted by a substituent. |