ChemInform Abstract: The Synthesis and Chemistry of Azolenines. Part 10. Reinvestigation of a Reaction Reported to Yield Ethyl 2-Cyano-3-(3,4-dimethylphenyl)-5-(4-methoxyphenyl)-2H-pyrrole-2-carboxylate, and Thermal Rearrangements of This and a Regioisome