反应详情

In 1,000 ml of acetonitrile was suspended 17 g of 5-{2-[2-(2-ethoxyphenoxy)ethylamino]-1-hydroxyethyl}-2-methoxybenzenesulfonamide hydrochloride and while stirring the suspension, 9 g of thionyl chloride was added dropwise to the suspension at room temperature, whereby the product was dissolved and then began to be crystallize gradually. After stirring the mixture for two days, the crystals formed were recovered by filtration, washed with chloroform and dried to provide 15 g of 5-{1-chloro-2-[2-(2-ethoxyphenoxy)ethylamino]-2-methylethyl}-2-methoxybenzenesulfonamide hydrochloride.

1. additionwas added dropwise to the suspension at room temperature
2. dissolutionwhereby the product was dissolved
3. customto be crystallize gradually
4. customthe crystals formed
5. filtrationwere recovered by filtration
6. washwashed with chloroform
7. customdried