反应详情

A mixture of 5-hexyn-1-ol (5 g), 1,6-dibromohexane (37.29 g), TAB (1 g) and 50% sodium hydroxide solution (20 ml) was stirred under nitrogen for 22 h. The mixture was diluted with water (100 ml) and extracted with diethyl ether (2×150 ml). The combined organic extracts were dried and evaporated in vacuo to give an oil. Purification by FCC eluting with hexane followed by hexane:ether (95:5) gave the title compound as a colourless oil. (7.7 g), t.l.c. (hexane:ether 2:1) Rf 0.80.

1. extractionextracted with diethyl ether (2×150 ml)
2. customThe combined organic extracts were dried
3. customevaporated in vacuo
4. customto give an oil
5. customPurification by FCC
6. washeluting with hexane