CPC C07F 9/5022 (2013.01) [B01J 31/2404 (2013.01); C07F 15/006 (2013.01); C07F 15/04 (2013.01)] | 4 Claims |
1. Triaryl phosphine ligands is selected from the group consisting of Ia and Ib:
wherein,
Ar is selected from 4-methoxyphenyl, 4-(dimethylamino)phenyl, 2-methoxyphenyl, 2-(dimethylamino)phenyl, 2,6-dimethoxyphenyl, 2,6-diisopropoxyphenyl, 2,6-bis(dimethylamino)phenyl, 2-methoxy-6-(dimethylamino)phenyl, or 2-methoxy-1-naphthyl;
R1 is selected from H, (C1-C6)alkyl, —O(C1-C6)alkoxy or —N(C1-C6)2 dialkylamino;
R2 and R3 are each independently selected from (C1-C10) alkyl, (C3-C10) cycloalkyl, (5-11 membered) heterocycloalkyl, (C6-C20) aryl, (C4-C20) hetero aryl or —CH2(C6-C10) arylmethylene, here (C3-C10) cycloalkyl, (5-11 membered) heterocycloalkyl, (C6-C20) aryl, (C4-C20) heteroaryl and —CH2(C6-C10)arylene groups can have 1 to 3 independently selected from (C1-C6)alkyl or —O(C1-C6)alkoxy, —N(C1-C6)2 substituents of dialkylamino groups, where the heteroatoms in the heteroaryl group are selected from O, N or S atom.
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