Biphenylenes. Part XXV. 2-Benzoylbiphenylenes and the synthesis of biphenylene-2-boronic and 2,6-(or 2,7-)diboronic acid
作者:J. M. Blatchly、D. V. Gardner、J. F. W. McOmie、T. P. Prabhu
DOI:10.1039/j39690002789
日期:——
Nitration of 2-benzoylbiphenylene gives a mononitro-derivative, but bromination gives an inseparable mixture of mono- and di-bromo-compounds. Pure 2-benzoyl-6-bromo- and 2-benzoyl-6,7-dibromo-biphenylene have been prepared by treating sulphonated benzoylbiphenylene with bromine, and 2-benzoyl-7-bromobiphenylene has been made by benzoylation of 2-bromobiphenylene. The Baeyer–Villiger oxidation of these
将2-苯甲酰基联苯硝化可得到一硝基衍生物,但溴化可得到一溴和二溴化合物的不可分离的混合物。通过用溴处理磺化的苯甲酰基联苯,可以制得纯的2-苯甲酰基-6-溴-和2-苯甲酰基-6,7-二溴代联苯,而通过将2-溴联苯的苯甲酰基化可以制得2-苯甲酰基-7-溴代联苯。已经研究了这些溴-2-苯甲酰基联苯的拜耳-维利格氧化。对2-苯甲酰基联亚苯基的肟的贝克曼重排的重新研究表明,两种可能的异构酰胺都形成了。在贝克曼反应中2-苯甲酰基-6,7-二溴联苯的肟产生了6,7-二溴联苯-2-羧酸的苯胺。