反应详情

In 35 ml of 21% (by weight) hydrochloric acid-isopropanol solution was suspended 2.1 g of thiourea, and 5 g of 5-(dimethylamino)methyl-4-methyl-2-thenyl alcohol was added thereto, after which the resulting mixture was subjected to reaction under reflux for 15 hours. After the mixture was allowed to stand at room temperature, the crystals deposited were collected by filtration to obtain 7 g (yield 82%) of 2-amidinothiomethyl-5-(dimethylamino)methyl-4-methylthiophene dihydrochloride having a melting point of 212°-214° C. (decomp.). NMR (d6 -DMSO) δ values: 2.31 (3H, s, --CH3), 2.82 (6H, s, --CH3 ×2), 4.58 (2H, s, >CH2), 5.04 (2H, s, >CH2), 7.16 (1H, s, thiophene ring H), 9.76 (4H, bs, ##STR224## 11.01 (1H, bs, HCl)

1. additionwas added
2. customafter which the resulting mixture was subjected to reaction
3. temperatureunder reflux for 15 hours
4. customto stand at room temperature
5. filtrationthe crystals deposited were collected by filtration