反应详情

To a suspension of lithium hydride (4.52 g; 0.569 mol) and aluminum lithium hydride (1.81 g; 0.048 mol) in tetrahydrofuran under nitrogen, (S)-3-chloromethyl-1,1,4,4,6-pentamethyl-1,2,3,4-tetrahydronaphthalene (94.69 g; 0.378 mol) was added dropwise, and the resultant mixture was heated while refluxing for 36 hours. The reaction mixture was treated with dilute hydrochloric acid and extracted with n-hexane. The extract was washed with saturated sodium chloride solution, dried, concentrated and distilled to give (S)-1,1,3,4,4,6-hexamethyl-1,2,3,4-tetrahydronaphthalene (59.7 g; 0.276 mol).

1. temperaturewhile refluxing for 36 hours
2. extractionextracted with n-hexane
3. washThe extract was washed with saturated sodium chloride solution
4. customdried
5. concentrationconcentrated
6. distillationdistilled