Sodium → 1,3-Dioxo-2,3-dihydro-1H-indene-2-carbonitrile

Participants

Reaction Steps

3-Cyanomethylene phthalide (6.0 g.; 0.035 mole) was added to a solution of sodium (0.8 g.) in methanol (35 ml) and the red solution refluxed for 20 mins. On cooling and acidification with one-third of its bulk of concentrated hydrochloric acid the indandione separated as a copious yellow solid, m.p. 204°-207° C. (d) (lit. m.p. 201°-202° C.).

Provenance & Evidence