Triphenylphosphine deoxygenation of malonyl peroxides, a novel route to malonyl anhydrides
Abstract
Treatment of di-n-butylmalonyl peroxide (1; R = Bun) with triphenylphosphine produced quantitatively triphenylphosphine oxide, 40–45% di-n-butyl-malonyl anhydride (2; R = Bun,), 55–60% carbon dioxide, and 45–50% di-n-butylketen (3; R = Bun)(trapped with methanol as its methyl ester).