Functionalized derivatives of sterically hindered o-quinones and pyrocatechols. 3,6-Di-tert-butyl-4-dicyanometyl-1,2-benzoquinone and its isomers

Article abstract of DOI:10.1007/BF02494376

Base-catalyzed interaction of 3,6-di-tert-butyl-1,2-benzoquinone with malononitrile mainly occurs as 1,4-addition to give 3,6-di-tert-butyl-4-dicyanomethylpyrocatechol. Its oxidation leads to 3,6-di-tert-butyl-4-dicyanomethyl-1,2-benzoquinone, which conve