Polyfluoroarenes. Part XX. Some homolytic arylations with pentafluorophenylhydrazine
作者:J. Michael Birchall、Robert N. Haszeldine、Malcolm Wilkinson
DOI:10.1039/p19740001740
日期:——
corresponding pentafluorophenylarenes, but a 57% yield of 2,3,4,5,6-pentafluoro(phenoxy)biphenyls is obtained from the hydrazine and silver oxide in molten diphenyl ether. The isomer ratio for the last reaction has been determined. Unambiguous syntheses of the two pentafluorophenylnaphthalenes and the three 2,3,4,5,6-pentafluoro(phenoxy)biphenyls are described.
用含水试剂(CuSO 4,NaOCl,H 2 O 2和H 2 O 2 -FeSO 4)氧化苯中的五氟苯肼可得到2,3,4,5,6-五氟联苯。在吡啶或氧化银中,在萘的四氯化碳溶液中使用高锰酸钾固体,产率较低,但相应的五氟苯基芳烃的产率为57%,但从中可获得2,3,4,5,6-五氟(苯氧基)联苯熔融二苯醚中的肼和氧化银。已确定最后反应的异构体比率。描述了两个五氟苯基萘和三个2,3,4,5,6-五氟(苯氧基)联苯的明确合成。