A method for manufacturing benzoxazole compounds is provided and has steps of: processing a reaction between o-aminophenol or a derivative thereof and an acyl chloride compound, so as to obtain a first product; and adding the first product into a solution of polyphosphoric acid to carry out a cyclization, so as to form a benzoxazole compound.
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Paragraph 0028; 0033-0034
(2017/04/28)
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