2,3-Dichloro-5,6-dicyano-1,4-benzoquinone → 5-[2-(3-Chloro-phenyl)-ethoxy]-4-ethyl-nicotinic acid ethyl ester

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Reaction Steps

The title compound of step 2 (80 mg, 0.175 mmol)) was dissolved in dichloromethane. 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (80 mg, 0.35 mmol) was added and the mixture was stirred over night at room temperature. The mixture was partitioned between ethyl acetate and saturated sodium hydrogencarbonate solution with addition of some sodium sulfit. The combined organic extracts were dried over sodium chloride and evaporated to dryness in vacuo. The material was titured with diethyl ether, the solid material was separated by suction filtration, the filtrate was evaporated to dryness, again, to yield the title compound.

Provenance & Evidence