Adding a certain compound to certain chemical reactions, such as: 1943-79-9, name is Phenyl methylcarbamate, belongs to amides-buliding-blocks compound, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 1943-79-9, Recommanded Product: 1943-79-9
Production Example 19-7 5-((2-Aminopyridin-4-yl)oxy)-6-(difluoromethoxy)-N-methyl-1H-indole-1-carboxamide 4-((6-(Difluoromethoxy)-1H-indol-5-yl)oxy)pyridin-2-amine described in Production Example 19-6 (4.4 mg, 0.015 mmol) was dissolved in N,N-dimethylformamide (500 muL), then 50-72% oily sodium hydride (4.1 mg) was added under nitrogen atmosphere at 0 C., and the mixture was stirred at room temperature for 30 minutes. The mixture was cooled to 0 C. again and phenyl methylcarbamate described in Production Example 1-7 (16.4 mg, 0.108 mmol) was added, and the mixture was stirred at room temperature for 50 minutes. Water and ethyl acetate were added to the reaction mixture for partition. The organic layer was washed with a saturated saline solution, then dried over anhydrous sodium sulfate and filtered, and then the filtrate was concentrated under vacuum. The residue was dissolved in dichloromethane and the resultant was purified with NH silica gel column chromatography (n-heptane:ethyl acetate=1:1-0:1-ethyl acetate_methanol=99:1-9:1), and then the target fraction was concentrated under vacuum to obtain the title compound (4.3 mg, 82%). 1H-NMR Spectrum (CDCl3) delta (ppm): 3.08 (3H, d, J=4.8 Hz), 4.44 (2H, brs), 5.49 (1H, brs), 5.91 (1H, d, J=1.8 Hz), 6.26 (1H, dd, J=6.2, 2.2 Hz), 6.50 (1H, t, J=74.0 Hz), 6.61 (1H, d, J=3.7 Hz), 7.35 (1H, s), 7.41 (1H, d, J=3.7 Hz), 7.92 (1H, d, J=5.9 Hz), 8.23 (1H, s).
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Reference:
Patent; Eisai R&D Management Co., Ltd.; Funasaka, Setsuo; Okada, Toshimi; Tanaka, Keigo; Nagao, Satoshi; Ohashi, Isao; Yamane, Yoshinobu; Nakatani, Yusuke; Karoji, Yuki; US2014/235614; (2014); A1;,
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