| 摘要 |
Biphenyl compounds of the formula <IMAGE> wherein one of R1 and R2 is hydrogen and the other is -CHO and the cyclic moiety A is a -2,5-; 2,3; or 3,4-di-OR-1-phenyl moiety wherein R is hydrogen or a hydroxy-protecting group are disclosed. The compounds are useful as intermediates in preparing redox compounds containing a phenylhydroquinone or phenylcatechol moiety.
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