Synthesis of 2,3-, 2,5-, and 2,6-dibromobenzobarrelenes High temperature bromination 1
作者:Osman Çakmak、Metin Balci
DOI:10.1016/0040-4039(90)80225-b
日期:1990.1
2-Bromobenzobarrelene 7 has been brominated at 78 °C. Four bromine addition products 8, 9, 10, 11 with bicyclo [2.2.2]skaleton have been isolated whose structures were established on the basis of the 1H- and 13C-NMR spectral measurements. The dehydrobromination of 8, 9, 10, and 11 was achieved using potassium tert.-Butoxide and sodium methoxide to give 2,3-, 2.4-, and 2,5-dibromobenzobarrelenes, respectively