Phthalic Anhydride → ethyl 2-(1,3-dioxoisoindol-2-yl)propanoate

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Reaction Steps

20.87 g (0.141 mol) of phthalic anhydride together with 16.5 g (0.141 mol) of ethyl aminopropionate in an open round-bottom flask at 120° C. for 5 h. 300 ml of cyclohexane are added, and the mixture is heated to reflux. The hot cyclohexane solution is decanted off from the remaining oil and completely concentrated. A slowly solidifying viscous oil is obtained (31 g, 89% yield).

Provenance & Evidence