Ethyl chloroformate → HCID 68489720, compound

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Reaction Steps

Ethyl chlorocarbonate (32 mL, 336 mmol) was added to a toluene (200 mL) solution of the compound obtained in Example 1 (21.0 g, 56 mmol), and the mixture was refluxed while heating for 6 hours. The mixture was allowed to cool in the air, and the reaction mixture was added to a saturated aqueous sodium hydrogencarbonate solution to allow the separation of an organic layer. The organic layer was washed with a saturated sodium chloride solution and dried over anhydrous sodium sulfate, the solvents were then distilled off under a reduced pressure, and the residue was purified by column chromatography (hexane:ethyl acetate=19:1), to give 15.0 g (62%) of the captioned compound in the form of an oily product.

Provenance & Evidence