专利号:US-4230624-A 优先权日:1977-09-02 标 题 :Process for the synthesis of derivatives of the benzofuran, chromene and isochromene type 发明人:LE CORRE MAURICE; HERCOUET ALAIN; BEGASSE BEATRICE 权利人:ANVAR 摘要:The invention relates to a process for the production of therapeutic compounds of the benzofuran, chromene and isochromene type of the general formula; in which formula, R1 and R3=H, lower alkyl, aralkyl or cycloalkyl R2=H or an organic radical and when D= R1 and R3 may represent an organic radical. The process comprising the cyclization in the liquid phase and in the presence of a base a compound of the formula; in which formula; R'=an alkyl, aryl or aralkyl radical and X-=an anion.
专利号:IE-47741-B1 优先权日:1977-09-02 标 题:Process for the synthesis of derivatives of the benzofuran,chromene and isochromene type
专利号:CH-638511-A5 优先权日:1977-09-02 标题:PROCESS FOR THE SYNTHESIS OF OXYGEN HETEROCYCLES.
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合成参考文献
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