Water → HCID 21459470, compound

Participants

Reaction Conditions

Reaction Steps

The above 2-(4-(1,4-dioxaspiro[4.5]decyl)cyclohexyl)ethanol (20 g, 70.8 mmol) was dissolved in dichloromethane (70 ml), followed by dropwise adding to the solution, DAST (13 g, 80.7 mmol), stirring at 0° C. for one hour, adding water to the reaction solution, washing the resulting organic layer successively with a saturated aqueous solution of sodium bicarbonate and water, distilling off the solvent, purifying the residue according to column chromatography using heptane/ethyl acetate as a developing solvent, on silica gel, to obtain 1-(4-(1,4-dioxaspiro[4,5]decyl)cyclohexyl)-2-fluoroethane, adding thereto formic acid (80 ml), refluxing the mixture for 2 hours, extracting the resulting product with toluene, washing the extraction solution successively with a saturated aqueous solution of sodium bicarbonate, distilling off the solvent, to isolate 4-(4-(2-fluoroethyl)cyclohexyl)cyclohexanone (8.0 g, 35.3 mmol). The yield of this product from 2-(4-(1,4-dioxaspiro[4,5]decyl)cyclohexyl)ethanol was 49.9%.

Provenance & Evidence