反应详情

A solution of (S)-1-methyl-2-pyrrolidinemethanol (0.86, 0.0075 mol) in THF (20 mL) was treated with 1.6M n-butyllithium in hexane (4.7 mL, 0.0075 mol). To the solution was added 3-butyloxy-4-methanesulfonyl-1,2,5-thiadiazole (1.2 g, 0.005 mol) and the reaction heated to reflux for 6.5 h. The solvent was evaporated, the residue acidified with cold 1N HCl, and the mixture extracted with ether. The aqueous was made basic and extracted with EtOAc. The extracts were washed with water, dried, and the solvent evaporated to give a liquid. The HCl salt (0.72 g) crystallized from EtOAc, m.p. 115°-116° C. (Compound 31).

1. temperaturethe reaction heated
2. temperatureto reflux for 6.5 h
3. customThe solvent was evaporated
4. extractionthe mixture extracted with ether
5. extractionextracted with EtOAc
6. washThe extracts were washed with water
7. customdried
8. customthe solvent evaporated
9. customto give a liquid
10. customThe HCl salt (0.72 g) crystallized from EtOAc, m.p. 115°-116° C. (Compound 31)