Ju Xiu-lian
2011
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Journal
Journal of Wuhan Institute of Technology
Abstract
Preparation of 6-methoxy-2(3H)-benzoxazolone from 2-nitro-5-methoxyphenol was improved.Hydrazine as the reductive reagent led to a convenient reaction and workup conditions.In present of nitrogen atmosphere,using urea instead of phenyl chloroformate as the formylation reagent reduced the production costs and obtained the pure product.