New polydentate ligands based on sterically hindered o-benzoquinones (pyrocatechols) containing the 1,4-diazadiene group
作者:G. A. Abakumov、V. K. Cherkasov、N. O. Druzhkov、T. N. Kocherova、A. S. Shavyrin
DOI:10.1007/s11172-011-0015-0
日期:2011.1
New bifunctional ligands containing the 1,4-diazadiene and 1,2-benzoquinone groups were synthesized by the reactions of 4-amino-3,6-di-tert-butylpyrocatechol with glyoxal and its derivatives. Their o-semiquinone complexes with transition and nontransition metals were studied in solution by the ESR method.
Reactions of isomeric 3,6- and 3,5-di-tert-butyl-ortho-benzoquinones with NH3
作者:V. B. Vol'eva、T. I. Prokofeva、A. I. Prokofev、I. S. Belostotskaya、N. L. Komissarova、V. V. Ershov
DOI:10.1007/bf01151298
日期:1995.9
(NH4)2CO3 in a solid phase has been studied. Redox processes with participation of a nucleophile of the medium take place for1, while2 reacts with NH3 at the carbonyl group with transformation of the quinoneimide. The mechanism of redox transformation of1 has been proposed.