Acta Chimica Sinica ›› 1995, Vol. 53 ›› Issue (1): 94-97. Previous Articles     Next Articles

Original Articles

几种新的3,7-二取代二苯并五元环状溴嗡盐的合成

侯自杰   

  1. 兰州大学有机化学研究所
  • 出版日期:1995-01-15 发布日期:1995-01-15

Synthesis of some new 3,7-bisubstituted dibenzobromolium salts

HOU ZIJIE   

  • Online:1995-01-15 Published:1995-01-15

3,7-Dinitrodibenzobromolium bisulfate was prepared directly by reaction of 4,4-dinitrobiphenyl with sodium bromide and potassium persulfate in concentrated sulfuric acid. Reduction of 3,7-dinitrobenzobromolium bisulfate with SnCl2-HCl gave 3,7-diaminodibenzobromolium chloride I. Reactions of the diazo-salt solution obtained by diazotization of I, with Cu2Cl2, Cu2Br2, and KI gave 3,7-dichlorodibenzobromolium chloride, 3,7-dibromodibenzobromolium bromide, and 3,7-diiododibenzobromolium iodide, resp. Structures of these new compounds were established by 1H NMR, MS and IR spectra.

Key words: INFRARED SPECTROPHOTOMETRY, SULFURIC ACID, MASS SPECTROGRAPHY, PROTON MAGNETIC RESONANCE SPECTROMETRY, DIAZOTIZATION, POTASSIUM PERSULFATE, SODIUM BROMIDE

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