A common heterocyclic compound, the benzoxazole compound, name is Methyl benzo[d]oxazole-7-carboxylate,cas is 1086378-35-9, mainly used in chemical industry, its synthesis route is as follows.,1086378-35-9
The compound obtained in Example 51-2 (1.221 g, 6.89 mmol) and THF (24 ml), was dissolved in ethanol (24 ml), cooled with ice. Thereto calcium chloride (1.529 g, 13.78 mmol), sodium borohydride (1.043 g, 27.56 mmol) was stirred at room temperature for 2 hours added. After the reaction was extracted with ethyl acetate by adding 1 mol / l hydrochloric acid. It was washed with a saturated aqueous sodium bicarbonate solution. Dried with magnesium sulfate, and the solvent was evaporated. The residue was purified by silica gel column chromatography (SNAP ULTRA 25 g, hexane / ethyl acetate) to give the title compound (149 mg, 14.5%) as a white solid.
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Reference£º
Patent; Yakult Honsha Co., Ltd.; University of Occupational and Environmental Health; Ono, Masahiro; Kobayashi, Tsuneyuki; Yamazaki, Ryuta; Haibara, Hirotake; Nishiyama, Yukiko; Hokkyo, Atsuko; Nishiyama, Hiroyuki; Kurita, Akinobu; Matsuzaki, Ken; Kono, Kimitoshi; Izumi, Hiroto; (215 pag.)JP2016/124812; (2016); A;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem