Vicinal acetylenic derivatives of 2-amino-1,4-naphthoquinone as key precursors of heterocyclic quinones
作者:M. S. Shvartsberg、E. A. Kolodina、N. I. Lebedeva、L. G. Fedenok
DOI:10.1007/s11172-012-0084-8
日期:2012.3
The Pd-catalyzed reaction between 3-acetylamino-2-bromo-1,4-naphthoquinones and CuI acetylides prepared in situ gave 3-acetylamino-2-alkynyl-1,4-naphthoquinones, which were transformed into benz[f]indole-4,9-dione and benzo[g]quinoline-5,10-dione derivatives.
Substitution of acetylenic groups for halogen in the quinonoid ring
作者:V. S. Romanov、I. D. Ivanchikova、A. A. Moroz、M. S. Shvartsberg
DOI:10.1007/s11172-006-0023-7
日期:2005.7
The bromine or iodine atom in the quinonoid ring devoid of +M substituent in the position neighboring to the halogen is replaced by acetylenic groups on treatment with CuI acetylides, prepared either beforehand or in situ, in a mixture of DMSO and CHCl3 in the presence of a Pd complex catalyst. A series of mono- and diacetylenic derivatives of 1,4-naphtho- and 1,4-benzoquinone were prepared.
Synthesis of benz[f]indole-4,9-diones via acetylenic derivatives of 1,4-naphthoquinone
作者:Mark S. Shvartsberg、Ekaterina A. Kolodina、Nadezhda I. Lebedeva、Lidiya G. Fedenok
DOI:10.1016/j.tetlet.2009.09.110
日期:2009.12
A synthetic route to benz[f]indole-4,9-diones from 1,4-naphthoquinone is described. Effective methods for cross-coupling of 3-acetylamino-2-bromo-1,4-naphthoquinone with terminal acetylenes and cyclization of the resulting 3-acetylamino-2-alkynyl-1,4-naphthoquinones are developed. (C) 2009 Elsevier Ltd. All rights reserved.
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