Synthesis of 3-Bromo-1,5- and -1,7-Azulenequinones Having Some Alkyl or Phenyl Group by the Polybromination and Reductive Debromination of Their Bromo-Substituent
作者:Tetsuo Nozoe、Hidetsugu Wakabayashi、Kimio Shindo、Masafumi Yasunami
DOI:10.1246/cl.1995.439
日期:1995.6
2-Methyl-, 2-phenyl-, 5- and 6-isopropylazulenes, and 5-isopropyl- and 6-isopropyl-2-methylazulenes were led to the corresponding 1,5- and 1,7-azulenequinones by polybromination in aqueous THF. 1-Carboxylic acid derivatives of these alkylazulenes also gave same products. Three isomeric 2-methyl derivatives of 3,3-biazulenequinones were produced from 2-methylazulene as minor products. Treatment of
2-甲基-, 2-苯基-, 5- 和 6-异丙基 azulenes, 和 5-isopropyl- 和 6-isopropyl-2-methylazulenes 在四氢呋喃水溶液中通过多溴化反应生成相应的 1,5- 和 1,7-azulenequinones . 这些烷基甘菊烯的 1-羧酸衍生物也得到相同的产物。3,3-biazulenequinones 的三种异构 2-甲基衍生物作为次要产物由 2-methylazulene 生产。在乙酸中用锡粉处理溴代芴醌,得到相应的母体醌。