NUCLEOPHILIC SUBSTITUTION REACTION VIA ONE ELECTRON TRANSFER PROCESSES. II A NEW SYNTHETIC METHOD FOR THE PREPARATION OF α,β-UNSATURATED ESTERS AND KETONES
An efficient one-pot synthesis of α,β-unsaturated esters and ketones consisting of the coupling reaction of α-chloronitroalkanes with the anions of diethyl α-alkylmalonates or ethyl α-alkylacetoacetates followed by deethoxycarbonylation and concomitant elimination of the nitro group is described.
The nitro and estergroups are eliminatedfrom α-cyano-β-nitroesters(1)on treatment with one electron transfer reagents. Similarly, the nitro and acetyl groups are eliminatedfrom α-acetyl-β-nitroesters(2)or α-acetyl-β-nitroketones(3).