反应详情

To a solution of 8.00 g (54.0 mmol) of 6-methyl-6-isobutylfulvene in 30 ml of ether, 54.0 ml (61.6 mmol) of an ether solution of methyllithium was dropwise added in a nitrogen atmosphere with ice cooling, followed by stirring at room temperature for 4 days. Then, 30 ml of water was added. The separated organic phase was washed with water and a saturated saline solution, then dried over magnesium sulfate and filtered. From the filtrate, the solvent was removed under reduced pressure to obtain a liquid. The liquid was subjected to vacuum distillation (120° C./25 mmHg) to obtain 7.10 g (43.2 mmol) of a light yellow liquid (yield: 80%)

1. washThe separated organic phase was washed with water
2. dry with materiala saturated saline solution, then dried over magnesium sulfate
3. filtrationfiltered
4. customFrom the filtrate, the solvent was removed under reduced pressure
5. customto obtain a liquid
6. distillationThe liquid was subjected to vacuum distillation (120° C./25 mmHg)