Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 1151665-15-4, name is tert-Butyl 2-chloro-7,8-dihydro-1,6-naphthyridine-6(5H)-carboxylate, This compound has unique chemical properties. The synthetic route is as follows., name: tert-Butyl 2-chloro-7,8-dihydro-1,6-naphthyridine-6(5H)-carboxylate
To a solution of 9-cyclopentyl-9H-pyrido[4′,3′:4,5]pyrrolo[2,3-d]pyrimidin-2-amine (prepared as described in WO 2009/085185) (152 mg, 0.6 mmol) in dioxane (6 mL) were added tert-butyl 2-chloro-7,8-dihydro-1,6-naphthyridine-6(5H)-carboxylate (177 mg, 0.66 mmol), tris(dibenzylideneacetone)dipalladium (0) (28 mg, 0.030 mmol), 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (52 mg, 0.090 mmol), and sodium t-butoxide (86 mg, 0.9 mmol). The reaction mixture thus obtained was heated at 150 C. under microwave irradiation for 1 hour. The reaction mixture was diluted with DCM, washed with brine, and then dried. The solvent was evaporated and the residue was purified by flash chromatography on silica gel eluting with 10% to 50% solvent A (DCM/MeOH/NH4OH, 100:10:1) in DCM to give the title compound as a light yellow solid (211 mg, 72% yield). 1H NMR (500 MHz, CDCl3) delta 1.52 (9H, s), 1.88-1.90 (2H, m), 2.14-2.21 (4H, m), 2.45-2.47 (2H, m), 2.92-2.94 (2H, m), 3.76-3.79 (2H, m), 4.59 (2H, m), 5.37 (1H, m), 7.49 (1H, d, J=10.0 Hz), 7.85 (1H, d, J=5.0 Hz), 8.14 (1H, br. s), 8.37 (1H, d, J=10.0 Hz), 8.52 (1H, d, J=5.0 Hz), 8.92 (1H, s), 9.11 (1H, s) ppm; LCMS m/z: 486 (M+1).
According to the analysis of related databases, 1151665-15-4, the application of this compound in the production field has become more and more popular.
Reference:
Patent; Amgen Inc.; US2012/244110; (2012); A1;,
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