Maleic Acid → HCID 68127899, compound

Participants

Reaction Steps

A 1.65 g. (0.00485 mole) portion of the product of Step D. is dissolved in 15 ml. of absolute alcohol. A solution of maleic acid (0.620 g., 0.00533 mole) in absolute alcohol (4 ml.) is added and the solution diluted with absolute ether to incipient cloudiness. A first crop of crystals weighing 0.55 g. is collected. This material sintered at 153.5°C. and melted at 159°C. A second crop of product weighing 0.25 g., m.p. 151.5°-155.5°C., is obtained from the mother liquors. The combined products are recrystallized three times from methanol - ether mixtures to give material with a constant m.p. of 166°-167.5°C.

Provenance & Evidence