反应详情

温度

-78 °C

Red-Al™ (3.4M in toluene, 33 ml) was dissolved in diethyl ether (100 ml) and cooled to −10° C. to which 3-phenyl-2-propyn-1-ol (10 g, 0.076 mol) dissolved in diethyl ether (10 ml) was added dropwise, causing the solution to turn a dark red/brown colour. The reaction was stirred for 1 hour. The solution was cooled to −78° C. and iodine monochloride (1.0M solution in dichloromethane, 114 ml) was added causing the solution to turn a dark brown colour. The mixture was allowed to warm to room temperature and stirred for 1 hour. A 10% solution of potassium sodium tartaric acid (800 ml) was added, producing a white precipitate, this was removed by filtration and the filtrate was extracted with diethyl ether (3×75 ml). The combined organic extracts were washed with sodium thiosulphate (5×60 ml), brine, dried (MgSO4) and the solvent removed in vacuo to afford the crude title compound as a light brown oil (19.5 g, 95%).

1. additionwas added dropwise
2. temperatureto warm to room temperature
3. stirringstirred for 1 hour
4. customproducing a white precipitate
5. customthis was removed by filtration
6. extractionthe filtrate was extracted with diethyl ether (3×75 ml)
7. washThe combined organic extracts were washed with sodium thiosulphate (5×60 ml), brine
8. dry with materialdried (MgSO4)
9. customthe solvent removed in vacuo