反应 #3678779
相关文献 (1)
openreactiondata ↗doi:10.6084/m9.figshare.5104873.v1; patent:US08895585B2
反应条件: temp:120.01; pressure:0.00; stir:; See reaction.notes.procedure_details.
实验步骤: Diisopropylethylamine (7.5 ml) and cis-cyclohexane-1,2-diamine (5.0 g) were added to an N-methylpyrrolidone (50 ml) solution containing methyl 2-benzylamino-6-chloronicotinate (6.0 g), followed by stirring at 120° C. for 11 hours. The reaction mixture was cooled to room temperature, and water and ethyl acetate were added. The organic layer was collected, washed with saturated saline, and dried over anhydrous sodium sulfate, and then the solvent was distilled away under reduced pressure. Di-tert-butyl dicarbonate (4.7 g) was added to a tetrahydrofuran (50 ml) solution containing the obtained residue and the resulting mixture was left at rest at room temperature for 3 days. The solvent was distilled away under reduced pressure. The obtained residue was purified by silica gel column chromatography (silica gel:silica gel 60 (spherical shape) (Kanto Chemical Co., Inc.); hexane:ethyl acetate=3:1), and a light yellow solid of methyl 2-benzylamino-6-(cis-2-(tert-butoxycarbonylamino)cyclohexylamino)nicotinate (7.7 g) was thus obtained. The reaction mixture was cooled to room temperature The organic layer was collected washed with saturated saline dried over anhydrous sodium sulfate the solvent was distilled away under reduced pressure Di-tert-butyl dicarbonate (4.7 g) was added to a tetrahydrofuran (50 ml) solution containing the obtained residue the resulting mixture was left at rest at room temperature for 3 days The solvent was distilled away under reduced pressure The obtained residue was purified by silica gel column chromatography (silica gel:silica gel 60 (spherical shape) (Kanto Chemical Co., Inc.); hexane:ethyl acetate=3:1)
来源 ID: ord-efaecba711b74c7a9af3326002b88ba2