Synthesis of four-, five-, and six-coordinate cobalt(iii) bis-o-iminobenzosemiquinone complexes
作者:A. V. Piskunov、K. I. Pashanova、I. V. Ershova、A. S. Bogomyakov、A. G. Starikov、A. V. Cherkasov
DOI:10.1007/s11172-019-2483-6
日期:2019.4
Cobalt(iii) complexes with different 4,6-di-tert-butyl-N-(aryl)-o-iminobenzosemiquinone ligands were synthesized. Four-, five-, or six-coordinate cobalt(iii) derivatives can be prepared using various starting metal compounds (CoCl2•6H2O, (acac)2Co•2H2O) and varying substituents in the N-aryl moiety of the organic ligand. The structures of five synthesized compounds were determined by X-ray diffraction
3,5-Di-tert-butyl-1,2-benzoquinone in the synthesis of quinolino[4,5-bc][1,5]benzoxazepines, aminophenols, and phenoxazines
作者:Zyong Ngia Bang、V. N. Komissarov、Yu. A. Sayapin、V. V. Tkachev、G. V. Shilov、S. M. Aldoshin、V. I. Minkin
DOI:10.1134/s1070428009030178
日期:2009.3
Reaction of 3,5-di-tert-butyl-1,2-benzoquinone with 5-amino-4-chloroquinolines gave derivatives of a new fused heterocyclic system, substituted quinolino[4,5-bc][1,5]benzoxazepines. The molecular structure of 9,11-di-tert-butyl-2,4,6-trimethyl-7H-quinolino[4,5-bc][1,5]benzoxazepine was determined by X-ray analysis. 3,5-Di-tert-butyl-1,2-benzoquinone reacted with o-nitro-, o-acyl-, and o-methoxycarbonylanilines and some amino-substituted nitrogen-containing heterocycles to form the corresponding sterically hindered N-aryl-(hetaryl)-o-aminophenols. Di-tert-butyl-substituted phenoxazines were obtained as a result of thermal cyclization of intermediately formed quinone imines.