High-temperature bromination of tetralin (1,2,3,4-tetrahydronaphthalene) with bromine resulted in benzylic bromination to give 1,4-dibromo-1,2,3,4-tetrahydronaphthalene (4) as a major product and several secondary products. Photolytic bromination of tetralin and subsequent double dehydrobromination of 1,1,4,4-tetrabromo-1,2,3,4-tetrahydronaphthalene (10) gave 1,4-dibromonaphthalene (11) as the sole product in a high yield. 1,4-Dibromonaphthalene is efficiently converted to the corresponding methoxy (12 and 13) and cyano (14 and 15) derivatives of naphthalene.
高温溴化四氢萘(1,2,3,4-四氢萘)与溴反应,产生苄溴化反应,生成1,4-二溴-1,2,3,4-四氢萘(4)作为主要产物,以及几种次生产物。四氢萘的光解溴化反应和随后的1,1,4,4-四溴-1,2,3,4-四氢萘(10)的双去溴反应,高产率地生成1,4-二溴萘(11)作为唯一产物。1,4-二溴萘有效地转化为相应的甲氧基(12和13)和氰基(14和15)萘衍生物。