反应详情

The isothioureido compound from Example 25, Step A, (0.1 mole) in 200 ml. of tetrahydrofuran:ether (3:1 v/v) is added to excess lithium aluminum hydride under ether and nitrogen at 0° C. over 30 minutes. After stirring one hour at room temperature, it is poured into a mixture of tetrahydrofuran and saturated ammonium chloride solution. The water layer is separated and extracted with 2×400 ml. of tetrahydrofuran. The combined tetrahydrofuran solutions are dried and evaporated to dryness to give 2-methyl-3-hydroxy-4-mercaptomethyl-5-vinylpyridine.

1. customThe water layer is separated
2. extractionextracted with 2×400 ml
3. dry with materialThe combined tetrahydrofuran solutions are dried
4. customevaporated to dryness