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8-(4-(2-methylpropylidene)cyclohexyl)-1,4-dioxaspiro[4.5]decane[ No CAS ]
Yield
Reaction Conditions
Operation in experiment
51%
To a stirring solution of isobutyltriphenylphosphonium bromide (5.66 g, 14.18 mmol) in THF (45 mL) was added potassium tert-butoxide (1.591 g, 14.18 mmol) portionwise. The resulting reaction mixture was stirred at room temperature for 1 h then <strong>[56309-94-5]4-(1,4-dioxaspiro[4.5]decan-8-yl)cyclohexanone</strong> (2.6 g, 10.91 mmol) was added portionwise. The reaction mixture was stirred at rt for 72 h. The solvents were evaporated. The residue was treated with Et2O (60 mL) and stirred for 1 h. The mixture was filtered, washed with further Et2O and the filtrate was evaporated. The residue was purified by column chromatography (EA/Iso-hexane) to afford 1.63 g (51percent) of 8-(4-(2- methylpropylidene)cyclohexyl)-l,4-dioxaspiro[4.5]decane as a colourless oil.