反应详情

A solution of 1-methyl-3-pyrrolidinol (0.6 g, 0.0059 mol) in THF (20 mL) was treated with 1.6M n-butyllithium in hexane (3.1 mL), 0.005 mol). To the solution was added 3-butyloxy-4-methanesulfonyl-1,2,5-thiadiazole (1.0 g, 0.0042 mol) and the reaction heated to reflux overnight. The solvent was evaporated, the residue acidified with cold 1N HCl, and the mixture extracted with ether. The aqueous fraction was made basic, extracted with EtOAc, and the extracts washed with water. The extracts were dried and the solvent evaporated to give a liquid. The HCl salt (0.7 g) crystallized from EtOAc, m.p. 157°-158° C. (Compound 28).

1. temperaturethe reaction heated
2. temperatureto reflux overnight
3. customThe solvent was evaporated
4. extractionthe mixture extracted with ether
5. extractionextracted with EtOAc
6. washthe extracts washed with water
7. customThe extracts were dried
8. customthe solvent evaporated
9. customto give a liquid
10. customThe HCl salt (0.7 g) crystallized from EtOAc, m.p. 157°-158° C. (Compound 28)