Diels-Alder Reactions of 3-and 5-Methyl-1-vinylpyrazoles with Cyclohexa-1,3-diene and Hydrogenation of the Reaction Products

摘要

The behavior of isomeric vinylpyrazoles in the Diels-Alder reactions with cyclohexa-1,3-diene was studied to show that the spatial location of the vinyl group on the N2 atom does not affect the diene synthesis.Synthesis,structure,and polymerization of 3-and 5-methyl-1-vinylpyrazoles(I,II)are fairly well documented[1-11].At the same time,no data on their behavior as dienophiles in Diels-Alder reactions are available.