3-Methyl-6-methylene-3-nitrocyclohexa-1,4-diene and (4-methyl-4-nitrocyclohexa-2,5-dienylidene)acetonitrile, intermediates in the rearomatizations of 1,4-dimethyl-4-nitrocyclohexa-2,5-dienyl acetate and (1-acetoxy-4-methyl-4-nitrocyclohexa-2,5-dienyl)acetonitrile

Abstract

4-Methyl-4-nitro-1-trimethylsilylmethyl-(1e) and 4-methyl-4-nitro-1-cyanomethyl-cyclohexa-2,5-dienol (1c) in acidified acetic anhydride give 3-methyl-6-methylene-3-nitrocyclohexa-1,4-diene (3a) and (4-methyl-4-nitrocyclohexa-2,5-dienylidene)acetonitrile (3c), respectively.