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    • 22. 发明授权
    • Process for preparing polyphenols
    • 多酚的制备方法
    • US4112003A
    • 1978-09-05
    • US765495
    • 1977-02-03
    • Ulrich Huber
    • Ulrich Huber
    • C07C39/10C07D309/38C07C41/00
    • C07D309/38C07C39/10
    • Polyphenols of the general formula: ##STR1## wherein R represents a readily cleavable ether group and R' represents a hydrogen atom or a lower alkoxycarbonyl, such as the methoxycarbonyl or ethoxycarbonyl group, and of phloroglucinol, are made by heating a compound of the general formula: ##STR2## wherein R and R' have the same significance given above, with an alkali metal alcoholate and, if desired, converting the resulting compound of formula I into pholoroglucinol by ether-cleavage and removal of any ester group denoted by R' which may be present in accordance with methods known per se.
    • 通式(I)的多酚,其中R表示容易切割的醚基,R'表示氢原子或低级烷氧基羰基,如甲氧基羰基或乙氧基羰基,和间苯三酚,是通过加热化合物 通式如下:其中R和R'具有与上述相同的含义,与碱金属醇化物反应,如果需要,通过乙醚裂解将所得到的式I化合物转化为光解甘露醇,并除去任何 由R'表示的酯基,其可以根据本身已知的方法存在。