类别:有毒物质
毒性分级:高毒
急性毒性:腹腔-小鼠 LD50: 100 毫克/公斤;静脉-小鼠 LD50: 100 毫克/公斤
可燃性危险特性:热分解排出有毒溴化物烟雾
储运特性:库房应保持干燥、通风,并低温储存
灭火剂:水、二氧化碳、泡沫、沙土或干粉
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
4,4'-二溴二苯甲酮 | bis(4-bromophenyl)methanone | 3988-03-2 | C13H8Br2O | 340.014 |
—— | (4-aminophenyl)(4-bromophenyl)methanone | 40292-19-1 | C13H10BrNO | 276.132 |
二苯甲酮 | benzophenone | 119-61-9 | C13H10O | 182.222 |
4-溴二苯基甲烷 | 1-benzyl-4-bromo-benzene | 2116-36-1 | C13H11Br | 247.134 |
4-氨基二苯甲酮 | (4-aminophenyl)(phenyl)methanone | 1137-41-3 | C13H11NO | 197.236 |
对溴苯甲醛 | 4-bromo-benzaldehyde | 1122-91-4 | C7H5BrO | 185.02 |
1-(alpha-氯苄基)-4-溴苯 | 4-bromo-benzhydryl chloride | 13391-38-3 | C13H10BrCl | 281.579 |
—— | 1-bromo-4-(1-phenylethyl)benzene | 56913-50-9 | C14H13Br | 261.161 |
对溴苯甲酰溴 | 1-bromo-4-(bromo(phenyl)methyl)benzene | 18066-89-2 | C13H10Br2 | 326.03 |
4-苄氧基苯甲酸 | phenyl(4-bromophenyl)methanol | 29334-16-5 | C13H11BrO | 263.134 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
(3-溴苯基)(4-溴苯基)甲酮 | (3-bromophenyl)(4-bromophenyl)methanone | 83699-51-8 | C13H8Br2O | 340.014 |
二苯甲酮 | benzophenone | 119-61-9 | C13H10O | 182.222 |
4-溴二苯基甲烷 | 1-benzyl-4-bromo-benzene | 2116-36-1 | C13H11Br | 247.134 |
4-甲基二苯甲酮 | 4-Methylbenzophenone | 134-84-9 | C14H12O | 196.249 |
4-苯甲酰基苯甲醛 | 4-benzoylbenzaldehyde | 20912-50-9 | C14H10O2 | 210.232 |
1,4-联苯酰基苯 | 1,4-dibenzoylbenzene | 3016-97-5 | C20H14O2 | 286.33 |
4-羟基-二苯甲酮 | 4-Hydroxybenzophenone | 1137-42-4 | C13H10O2 | 198.221 |
4-氨基二苯甲酮 | (4-aminophenyl)(phenyl)methanone | 1137-41-3 | C13H11NO | 197.236 |
(4-溴苯基)(2-氟-4-甲氧基苯基)甲酮 | (4-bromophenyl)(2-hydroxyphenyl)methanone | 2038-92-8 | C13H9BrO2 | 277.117 |
2-氨基-4'-溴二苯甲酮 | 2-amino-4'-bromobenzophenone | 1140-17-6 | C13H10BrNO | 276.132 |
Halodimethylsulfonium halide 1, which is readily formed in situ from hydrohaloic acid and DMSO, is a good nucleophilic halide. This activated nucleophilic halide rapidly converts aryldiazonium salt prepared in situ by the same hydrohaloic acid and nitrite ion to aryl chlorides, bromides, or iodides in good yield. The combined action of nitrite ion and hydrohaloic acid in DMSO is required for the direct transformation of aromatic amines, which results in the production of aryl halides within 1 h. Substituted compounds with electron-donating or -withdrawing groups or sterically hindered aromatic amines are also smoothly transformed to the corresponding aromatic halides. The only observed by-product is the deaminated arene (usually <7%). The isolated aryldiazonium salts can also be converted to the corresponding aryl halides using 1. The present method offers a facile, one-step procedure for transforming aminoarenes to haloarenes and lacks the environmental pollutants that usually accompany the Sandmeyer reaction using copper halides. Key words: aminoarenes, haloarenes, halodimethylsulfonium halide, halogenation, amination.