The present invention relates to novel biphenyl compounds of the formula ##STR1## wherein one of R.sup.1 and R.sup.2 is hydrogen and the other is --CH.sub.3-m X.sub.m wherein X is chloro or bromo and m is an integer one or two, and the cyclic moiety A is a -2,5-; -2,3-; or -3,4-di-OR-1-phenyl moiety wherein R is a hydroxy-protecting group and to a method of preparing same. The biphenyl compounds are useful as intermediates in preparing redox compounds containing a phenylhydroquinone or phenylcatechol moiety.
本发明涉及一种新型
联苯化合物,其
化学式为##STR1##其中R.sup.1和R.sup.2中的一个为氢,另一个为--CH.sub.3-m X.sub.m,其中X为
氯或
溴,m为1或2的整数,环状基团A为-2,5-;-2,3-;或-3,4-二OR-1-苯基基团,其中R为羟基保护基团,并提供一种制备方法。这些
联苯化合物可用作制备含有苯基羟醌或苯基
邻苯二酚基团的氧化还原化合物的中间体。