[1,1′-Binaphthalene]-2,2′-diamine, cas is 4488-22-6, it is a common heterocyclic compound, the chiral-catalyst compound, its synthesis route is as follows.,4488-22-6
Preparation of ligands.; Synthesis of imines.; 3 mmol of bisnaphthyldiamine and 6 mmol of ketone were dissolved in 30 mL of anhydrous toluene. A few mg of para toluene sulfonic acid were added. After addition of 30 g of activated 4 angstroem molecular sieves by 10 g portions, the reaction mixture was stirred at a temperature of 110C for a period of time of 3 days. Molecular sieves were filtered off and the solvent was removed under vacuum. The resulting solid was crystallised from methanol to give the product. Two compounds were obtained and characterised. Bis-naphthyldi(phenylmethyleneimine) was obtained as a yellow solid with a yield of 79 %. [Show Image] The NMR results were as follows. 1H-RMN (300 MHz, CD2Cl2) [Show Image] (ppm) : 6.64 (d, 2H), 6.7-4-78 (m, 8H), 6.93-6.97 (m, 4H), 7.05 (t, 2H), 7.19-7.48 (m, 6H), 7.50 (t, 2H), 7.68 (d, 6H), 7.77 (d, 2H) 13C-RMN (75 MHz, CD2Cl2) [Show Image] (ppm) : 122.2, 124.1, 124.2, 126.1, 126.5, 127.8, 127.9, 128.0, 128.2, 128.3, 128.9, 130.0, 130.2, 130.6, 130.7, 133.9, 136.6, 140.8, 147.6, 167.2
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Reference£º
Patent; TOTAL PETROCHEMICALS RESEARCH FELUY; EP1982975; (2008); A1;,
Chiral Catalysts
Chiral catalysts – SlideShare