Diethyl Ether → HCID 11142708, compound

Participants

Reaction Steps

In methanol (50 ml) was dissolved 2-(5-hydroxy-1,4-naphthoquinon-2-yl)-3-methoxy-5-methylbenzoic acid (1 g) as obtained in Example 15, followed by addition of a diethyl ether solution of diazomethane (20 ml). The mixture was allowed to stand at room temperature for an hour, after which the diethyl ether and methanol were distilled off. The residue was subjected to silical gel chromatography and recrystallized from diethyl ether-n-hexane. The procedure yielded yellow crystals (500 mg) of methyl 2-(5-hydroxy-1,4-naphthoquinon-2-yl)-3-methoxy-5-methylbenzoate.

Provenance & Evidence