An efficient protocol for the protecting-group-free synthesis of unsymmetrical hydroxybiaryls via the Pd-catalyzed cross-couplings of unprotected iodophenols with triarylbismuth reagents is described. The presented protocols exhibits good to high yields of hydroxybiaryls.
描述了通过未保护的
碘代
苯酚与三芳基
铋试剂的Pd催化的交叉偶联来无保护地合成不对称羟基联芳基的有效方案。提出的协议表现出良好的羟基联芳基的高收率。