1,3-Dimesityl-1H-imidazol-3-ium chloride, cas is 141556-45-8, it is a common heterocyclic compound, the chiral-catalyst compound, its synthesis route is as follows.,141556-45-8
To anhydrous 1,4-dioxane (20 mL), [Pd(acac)2] (1 g, 3.3 mmol,1 equiv) and IMes*HCl (1.43 g, 3.7 mmol, 1.1 equiv) were added. The mixture was refluxed for 24 h. After the reaction, solvent was evaporated under vacuum. Diethyl ether was then added and stirred until no more solid was dissolved. The solution was filtered and diethyl ether was removed under vacuum. Yellow powder was washed with n-pentane and dried under vacuum. Yellow solids, yield:85%, 1H NMR (399.78 MHz, CDCl3) delta 7.08-6.94 (br,6H), 5.1 (s, 1H), 2.47-2.02 (br, 18H), 1.84-1.73 (6H), 13CNMR (100.53 MHz, CDCl3) delta 187.21, 183.16, 153.93,139.29, 137.60, 136.35, 135.01, 129.76, 128.90, 123.8,122.57, 99.68, 27.17, 25.61, 21.29, 18.93, 17.85.Synthesis of (IMes)Pd(tmhd)Cl. Yellow solids, yield:76%, 1H NMR (399.78 MHz, CDCl3) delta 7.09-6.96 (6H),5.50 (s, 1H), 2.40-2.31 (12H), 2.21-2.16 (6H), 1.04-0.95(18H), 13C NMR (100.53 MHz, CDCl3) delta 139.08, 136.64,135.40, 130.00, 128.74, 124.04, 90.65, 41.15-40.64, 29.07,28.51, 21.25, 18.99.
As the rapid development of chemical substances, we look forward to future research findings about 141556-45-8
Reference£º
Article; Lee, Dong Jin; Kim, Myungwoong; Kim, Chan Kyung; Lee, Ik Mo; Bulletin of the Korean Chemical Society; vol. 40; 7; (2019); p. 710 – 718;,
Chiral Catalysts
Chiral catalysts – SlideShare