摘要
2,6-Bis[(4R)-4,5-dihydro-4-phenyl-2-oxazolyl]pyridine [128249-70-7] C23H19N3O2 (MW 369.42) InChI = 1S/C23H19N3O2/c1-3-8-16(9-4-1)20-14-27-22(25-20)18-12-7-13-19(24-18)23-26-21(15-28-23)17-10-5-2-6-11-17/h1-13,20-21H,14-15H2/t20-,21-/m0/s1 InChIKey = HLHBIMJNCKZZQO-SFTDATJTSA-N 2,6-Bis[(4S)-4,5-dihydro-4-phenyl-2-oxazolyl]pyridine [174500-20-0] C23H19N3O2(MW 369.42) InChI = 1S/C23H19N3O2/c1-3-8-16(9-4-1)20-14-27-22(25-20)18-12-7-13-19(24-18)23-26-21(15-28-23)17-10-5-2-6-11-17/h1-13,20-21H,14-15H2/t20-,21-/m1/s1 InChIKey = HLHBIMJNCKZZQO-NHCUHLMSSA-N (functions as a chiral ligand in promoting a variety of enantioselective reactions, which include aldol reactions, cycloadditions, 1,2- and 1,4-additions, ring opening reactions of epoxides, and radical reactions) Physical Data: mp 170–172 °C; = +183.5 (c 1.03, CH2Cl2) (isomer I). Form Supplied in: white crystalline solid. Analysis of Reagent Purity: IR (KBr disk) 1645, 1565 cm−1; NMR (400 MHz, CDCl3) δ: 4.43 (2H, t, J = 8.5 Hz), 4.91–4.95 (2H, m), 5.44–5.49 (2H, m), 7.29-7.39 (10H, m), 7.92 (1H, t, J = 7.9 Hz), 8.35 (2H, d, J = 7.9 Hz); NMR (125 MHz, CDCl3) δ: 70.3, 75.5, 126.3, 126.8, 127.8, 128.8, 137.5, 141.7, 146.8, 163.5. Preparative Methods: 1, 2 (1) (2) Purification: recrystallization from EtOAc–pentane