(1,5-Cyclooctadiene)[(3R,4R)-3,4-bis(diphenylphosphino)-1-methylpyrrolidine]rhodium Tetrafluoroborate

[100366-06-1] C37H41BF4NP2Rh (MW 737.39) InChI = 1S/C29H29NP2.C8H12.BF4.Rh/c1-30-22-28(31(24-14-6-2-7-15-24)25-16-8-3-9-17-25)29(23-30)32(26-18-10-4-11-19-26)27-20-12-5-13-21-27;1-2-4-6-8-7-5-3-1;2-1(3,4)5;/h2-21,28-29H,22-23H2,1H3;1-2,7-8H,3-6H2;;/q;;-1;+1/b;2-1-,8-7-;;/t28-,29-;;;/m1.../s1 InChIKey = QKBMBVAGQIURAJ-FLRZYTEDSA-N (catalyst for asymmetric hydrogenation of α-acylaminoacrylic acid derivatives2) Solubility: insol ether; sol CH2Cl2, MeOH Analysis of Reagent Purity: 31P NMR (CD2Cl2): δ 33.17 (d, 2JRh,P = 148.2 Hz). Preparative Methods: the ligand (3R,4R)-3,4-bis(diphenylphosphino)-1-methylpyrrolidine (1a) is prepared from L-tartaric acid via (3R,4R)-3,4-bis(diphenylphosphino)-1-benzylpyrrolidine (1b) as shown in eq 1. The title cationic rhodium complex is made by mixing bis(1,5-cyclopentadiene)rhodium tetrafluoroborate and (1a) in CH2Cl2 under nitrogen. (1)