Decomposition of 5-amino-1, 8, 8-trimethyl-3-dicyanomethylene-2-azabicyclo [2.2. 2] oct-5-ene-4, 6-dicarbonitrile at treatment with hydrogen sulfide
VD Dyachenko, MS Nazarenko
Index: Dyachenko; Nazarenko Russian Journal of Organic Chemistry, 2011 , vol. 47, # 5 p. 786 - 786
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Abstract
5-Amino-1, 8, 8-trimethyl-3-dicyanomethylene-2-azabicyclo [2.2. 2] oct-5-ene-4, 6- dicarbonitrile (І) we formerly synthesized by the reaction of malononitrile with mesityl oxide [1]. Compound I formed also in the condensation of malononitrile with acetone in the presence of bases [2] or of mixture KF–Al2O3 [3]. Its boiling in xylene results in decomposition into a mixture of 4-amino-6-methyl-3, 5-dicyano-2- ...
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