1-氨基异喹啉可用作医药合成中间体,在实验室研发和化工医药合成过程中具有重要应用。
制备方法在500毫升三颈烧瓶中,加入12.40克(0.32摩尔)的氨基钠粉末,并加入300毫升间二甲苯。将10.32克(0.08摩尔)异喹啉溶于100毫升间二甲苯中形成的溶液,在120℃下边搅拌边逐滴加入烧瓶内,滴加完毕后继续搅拌4小时。反应完成后,蒸干间二甲苯,剩余残渣溶于热水结晶得产物1-氨基异喹啉6.90克(0.048摩尔),产率为60%,熔点为120~121℃。
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | N-(tert-butyl)isoquinolin-1-amine | —— | C13H16N2 | 200.283 |
1-硝基异喹啉 | 1-nitro-isoquinoline | 19658-76-5 | C9H6N2O2 | 174.159 |
异喹啉 | isoquinoline | 119-65-3 | C9H7N | 129.161 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
1-亚硝基异喹啉 | 1-nitrosoisoquinoline | 79933-06-5 | C9H6N2O | 158.159 |
N-甲基异喹啉-1-胺 | N-methylisoquinolin-1-amine | 46000-11-7 | C10H10N2 | 158.203 |
—— | N-allyl-1-aminoisoquinoline | 1314079-02-1 | C12H12N2 | 184.241 |
1-氨基-4-溴异喹啉 | 4-bromoisoquinolin-1-amine | 55270-27-4 | C9H7BrN2 | 223.072 |
1-硝基异喹啉 | 1-nitro-isoquinoline | 19658-76-5 | C9H6N2O2 | 174.159 |
—— | N-(isoquinolin-1-yl)acetamide | 51640-00-7 | C11H10N2O | 186.213 |
—— | N-benzylisoquinolin-1-amine | 51336-09-5 | C16H14N2 | 234.301 |
异喹啉 | isoquinoline | 119-65-3 | C9H7N | 129.161 |
—— | N-isoquinolin-1-ylpropanamide | 1354695-99-0 | C12H12N2O | 200.24 |
—— | isoquinolin-1-yl-carbamic acid ethyl ester | 36160-16-4 | C12H12N2O2 | 216.239 |
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.