Treatment of various 1,4-epoxy-1,4-dihydroarenes with trichlorosilane in toluene in the presence of a palladium complex affords the corresponding biaryls in good to excellent yields. The process appears to occur via a novel palladium-catalyzed hydrosilylative dimerization of 1,4-epoxy-1,4-dihydroarenes and subsequent elimination of HOSiCl(3) and H(2)O.
在
钯配合物的存在下,在
甲苯中用三
氯硅烷处理各种1,4-环氧-1,4-二氢
芳烃,得到相应的联芳基,收率很好。该过程似乎是通过新型的
钯催化的1,4-环氧-1,4-二氢
芳烃的氢甲
硅烷基化二聚反应和随后的HOSiCl(3)和H(2)O消除而发生的。