反应详情

Two milliliters of an ethanolic solution containing 92 mg (4 mmoles) of sodium was added dropwise to a cold solution of 1.95 g (4 mmoles) of ethyl 4,6,6,6-tetrabromo-3,3-dimethylhexanoate in 10 ml of absolute ethanol. The cooled mixture was stirred for 2 hours, then poured into chilled 1 N hydrochloric acid. The acidic mixture was extracted with diethyl ether, and the extract was washed successively with saturated aqueous sodium bicarbonate and sodium chloride. The washed extract was dried over magnesium sulfate and distilled to give 846 mg (52% yield) of ethyl 4,6,6-tribromo-3,3-dimethyl-5-hexenoate, b.p. 130°-133°/0.3 mm.

1. additionpoured
2. extractionThe acidic mixture was extracted with diethyl ether
3. washthe extract was washed successively with saturated aqueous sodium bicarbonate and sodium chloride
4. extractionThe washed extract
5. dry with materialwas dried over magnesium sulfate
6. distillationdistilled