Triphenylphosphine → Di-tert-butyl 1-[(4,4-difluorocyclohexyl)methyl]hydrazine-1,2-dicarboxylate

関与物質

反応条件

反応手順

To 3.9 g of (4,4-difluorocyclohexyl)methanol was added 40 mL of toluene. 10.2 g of triphenylphosphine was added thereto at room temperature, followed by stirring for a while. The mixture was ice-cooled, and 7.2 g of di-tert-butyl azodicarboxylate was portionwise added thereto while maintaining the internal temperature at about 10 to 15° C. The reaction mixture was stirred at room temperature for 20 hours. The solvent was evaporated and the residue was purified by silica gel column chromatography (n-hexane/ethyl acetate) to obtain 10.7 g of di-tert-butyl 1-[(4,4-difluorocyclohexyl)methyl]hydrazine-1,2-dicarboxylate.

情報源と証拠