2,2′-Biphospholane-1,1′-bis(1,1-dimethylethyl)-(1S,1′S,2R,2′R)-(9CI)

[470480-32-1] C16H32P2 (MW 286.37) InChI = 1S/C16H32P2/c1-15(2,3)17-11-7-9-13(17)14-10-8-12-18(14)16(4,5)6/h13-14H,7-12H2,1-6H3/t13-,14-,17+,18+/m1/s1 InChIKey = SJNUZTRUIDRSJK-KNCCTNLNSA-N (reagent used as a chiral ligand in a number of transition metal catalyzed asymmetric reactions, especially in asymmetric hydrogenations1) Alternate Names: (1S,1′S,2R,2′R)-1,1′-bis(1,1-dimethylethyl)- 2,2′-biphospholane; (1S,1S′,2R,2R′)-TangPhos. Physical Data: mp N/A due to autooxidization upon exposure to air, especially during heating process. Solubility: sol in CH2Cl2, ether, EtOAc, and most organic solvents. Form Supplied in: white powdery solid. Analysis of Reagent Purity: 1H NMR, 13C NMR, 31P NMR, HRMS. Preparative Method: commercially available from Aldrich and Strem. Purification: pass through a basic Al2O3 plug, eluting with Et2O: hexane = 1:10. Handling, Storage, and Precautions: To prevent autooxidization in the air, storing under argon and moisture free atmosphere is highly recommended.