Acetic Anhydride → Propanedinitrile, 2-(3-methoxy-2-propen-1-ylidene)-

Participants

Reaction Steps

A solution of 2.0 g. (31 m moles) of malononitrile and 5 g. (31 m moles) of 1,1,3,3-tetramethoxypropane in 12 ml. of acetic anhydride is heated to reflux for 24 hrs. The reaction mixture is distilled separating the lower boiling by-products and solvent from the product. The product fraction is diluted with water and the resulting precipitate is filtered and recrystallized from isopropanol-water, 1.0 g., m.p. 74°-76°C.

Provenance & Evidence