Synthesis and properties of 7, 7-diaminoquinone methides

L Pavlíčková, S Vašíčková…

Index: Pavlickova, Libuse; Vasickova, Sona; Soucek, Milan Collection of Czechoslovak Chemical Communications, 1980 , vol. 45, # 10 p. 2675 - 2683

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Citation Number: 5

Abstract

Abstract Diaminoquinone methides Xa-Xe were prepared by aminolysis of the dicyanoquinone methide IX. From the isolated intermediates XI and XIII a four-step mechanism was deduced, involving addition and elimination steps in the order Ad-E-Ad-E. Condensation of N, N, N', N'-tetramethylchloroformamidinium chloride with 2, 6-ditert- butylphenol afforded bis (dimethylamino)-quinone methide Xc which on transamination ...