(R)-4-氨基-6-氟-2,3-二氢苯并吡喃盐酸盐

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A solution of 4-(2,4-dimethoxybenzylamino)-3-(5-nitro-4-thiocyanatopyrimidin-2-ylamino)benzonitrile (139 mg) in anhydrous DMSO (3 mL) was added to solution of (R)-6-fluorochroman-4-amine hydrochloride (79 mg) in anhydrous DMSO (3 mL) and DIEA (0.21 mL), the resulting dark red solution was stirred at RT under an atmosphere of Ar over which time the solution lighten to yellow. Upon completion of the reaction, the mixture was cooled to 0° C. with an ice bath, and water (25 mL) was added (exotherm). The resulting yellow solid was collected via filtration, washed with additional water, air dried, then dissolved in CH2Cl2, the organic solution was dried (MgSO4), filtered and evaporated to yield the titled compound (quant.), NMR CDCl3 1H δ 9.0 (s, 1H), 8.6 (d, 1H), 7.7 (br s, 1H), 7.4 (dd, 1H), 7.1 (d, 1H), 7.0-6.8 (m, 4H), 6.5-6.4 (m, 2H), 5.2 (br s, 1H), 4.3 (s, 2H), 4.2 (br s, 2H), 3.8 (s, 6H), 2.2 (br s, 1H), 1.8 (br s, 1H); 19F δ −123 ppm; MH+=572. Upon completion of the reaction the mixture was cooled to 0° C. with an ice bath The resulting yellow solid was collected via filtration washed with additional water, air dried dissolved in CH2Cl2 the organic solution was dried (MgSO4) filtered evaporated