| 摘要 |
The invention relates to substituted hydroquinone derivatives of the general formula I <IMAGE> (I) wherein R4 is lower alkyl and either R1 is hydroxy, halogen, a group of the formula -P(=O)(R5)R6 (Ia), a group of the formula -P+(R7)(R8)R9X-(Ib) or a group of the formula -Si(R7)(R8)R9 (Ic), M is methylene, R2 is hydrogen or a group of the formula <IMAGE> (Id) and R3 is hydrogen or halogen, or 1 is hydroxy or lower alkoxy, M is carbonyl, R2 is hydrogen and R3 is halogen, each of R5 and R6, independently of the other, is lower alkyl, lower alkoxy Or N,N-di-lower alkylamino, or is benzyl, benzyloxy, phenyl or phenoxy, each of which is unsubstituted or mono- or di-substituted at the phenyl ring, to a process for the preparation of those compounds and to the use of those compounds, and to a process in which those compounds are used.
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