反应详情

2-Pyridineethanethiol (1.9 g) and potassium hydroxide (0.77 g) in methanol (15 ml) were stirred under nitrogen for 15 min. 2-Chloroethanol (1.10 g) was added and the solution stirred under nitrogen for 6 h. The mixture was acidified to pH5 with 2N hydrochloric acid and then left overnight. The methanol was evaporated in vacuo and the residue partitioned between water (150 ml) and diethyl ether (150 ml), separated and the aqueous phase re-extracted with diethyl ether (100 ml). The combined ethereal layers were dried and evaporated in vacuo to give an oil. Purification by FCC eluting with System G (98:2:1) gave the title compound (0.56 g) as a colourless oil. T.l.c. (diethyl ether) Rf 0.21

1. waitleft overnight
2. customThe methanol was evaporated in vacuo
3. customthe residue partitioned between water (150 ml) and diethyl ether (150 ml)
4. customseparated
5. extractionthe aqueous phase re-extracted with diethyl ether (100 ml)
6. customThe combined ethereal layers were dried
7. customevaporated in vacuo
8. customto give an oil
9. customPurification by FCC
10. washeluting with System G (98:2:1)