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    • 8. 发明授权
    • Preparation of glutaric acid derivatives
    • 戊二酸衍生物的制备
    • US5714628A
    • 1998-02-03
    • US672682
    • 1996-06-28
    • Stephen Challenger
    • Stephen Challenger
    • C07C67/42C07C69/757C07C205/42C07C69/74
    • C07C67/42C07C201/12C07C69/757
    • The invention provides a process for preparing a compound of the formula: ##STR1## or a base salt thereof, wherein R.sup.2 is hydrogen or C.sub.1 -C.sub.6 alkyl optionally substituted by up to 3 substituents each independently selected from the group consisting of C.sub.1 -C.sub.6 alkoxy and C.sub.1 -C.sub.6 alkoxy(C.sub.1 -C.sub.6 alkoxy)-; and R.sup.3 is C.sub.1 -C.sub.6 alkyl or benzyl, said benzyl group being optionally ring-substituted by up to 2 nitro or C.sub.1 -C.sub.4 alkoxy substituents. comprising reacting a compound of the formula: ##STR2## wherein R.sup.1 is C.sub.1 -C.sub.4 alkyl, phenyl or benzyl or C.sub.1 -C.sub.4 alkoxy; and R.sup.2 and R.sup.3 are as previously defined for a compound of the formula (I), with hydrogen peroxide or a source of peroxide ions: said process being optionally followed by conversion of the compound of the formula (I) to a base salt thereof. The present invention also relates to novel compounds of the formula (II).
    • 本发明提供了制备下式化合物或其碱盐的方法:其中R 2为氢或任选被至多3个取代基取代的C 1 -C 6烷基,所述取代基各自独立地选自C1 -C 1-6烷氧基和C 1 -C 6烷氧基(C 1 -C 6烷氧基) - ; 并且R 3是C 1 -C 6烷基或苄基,所述苄基任选被至多2个硝基或C 1 -C 4烷氧基取代基环取代。 包括使下式化合物:其中R 1是C 1 -C 4烷基,苯基或苄基或C 1 -C 4烷氧基; 并且R2和R3如先前对于式(I)化合物所定义,与过氧化氢或过氧化物离子的来源:所述方法任选地随后将式(I)化合物转化为其碱式盐。 本发明还涉及新的式(II)化合物。