Reactions of trinitromethyl-1,3,5-triazines with triphenylphosphine in the presence of hydrogen donors and a dipolarophile
摘要:
2-Dialkylamino-4-methoxy-6-trinitromethyl-1,3,5-triazines reacted with triphenylphosphine in toluene in the presence of primary aliphatic alcohols as proton donors to give the corresponding 6-[hydroxyimino (nitro)methyl)-1,3,5-triazines. Analogous reactions in the presence of prop-2-yn-1-ol at elevated temperature resulted in the formation of [3 + 2]-dipolar cycloaddition products, 3-(1,3,5-triazinyl)-5-hydroxymethylisoxazoles.
Reactions of trinitromethyl-1,3,5-triazines with triphenylphosphine in the presence of hydrogen donors and a dipolarophile
摘要:
2-Dialkylamino-4-methoxy-6-trinitromethyl-1,3,5-triazines reacted with triphenylphosphine in toluene in the presence of primary aliphatic alcohols as proton donors to give the corresponding 6-[hydroxyimino (nitro)methyl)-1,3,5-triazines. Analogous reactions in the presence of prop-2-yn-1-ol at elevated temperature resulted in the formation of [3 + 2]-dipolar cycloaddition products, 3-(1,3,5-triazinyl)-5-hydroxymethylisoxazoles.
1,3,5-Triazinenitrolic acids. Synthesis and NO-releasing properties
作者:V. V. Bakharev、A. A. Gidaspov、E. V. Peresedova、V. G. Granik、N. B. Grigor’ev、V. I. Levina、I. S. Severina、A. Yu. Shchegolev、D. E. Dmitriev、A. B. Sheremetev
DOI:10.1007/s11172-009-0268-z
日期:2009.9
Reactions of salts of 1,3,5-triazine dinitromethyl derivatives with nitrogen dioxide that result mainly in 1,3,5-triazinenitrolic acids are investigated. The behavior of nitrolic acid in electroreduction at a mercurydrop electrode at various pH was studied; oxygen was shown to accelerate the process. The promoting effect of nitrolic acids on the activity of soluble guanylate cyclase of human platelets
Reactions of 1,3,5-triazinylnitroformaldoxime 4.* synthesis of (5-R-1,2,4-oxadiazol-3-yl)-1,3,5-triazines
作者:V. V. Bakharev、A. A. Gidaspov、E. V. Selezneva、V. E. Parfenov、I. V. Ulˈyankina、I. S. Nazarova、Yu. T. Palatova、O. S. Elˈtsov
DOI:10.1007/s10593-012-0901-x
日期:2012.1
5-triazin-2-ylnitroformaldoximes with nitriles leads not to the formation of 1,2,4-oxadiazoles but rather to dimerization of the intermediate 1,3,5-triazinylnitrile oxides to give furoxanes. The reaction of 4-R-6-methoxy-1,3,5-triazin-2-ylnitroformaldoximes with ammonia and amines gives 1,3,5-triazinylamidoximes, which upon acylation and subsequentintramolecular cyclization yield (5-R-1,2,4-oxadiazol-3-yl)-1,3,5-triazines
Reactions of 1,3,5-triazinylnitroformaldoximes 3*. Interaction of 1,3,5-triazinylnitroformaldoximes with malonic acid esters
作者:V. V. Bakharev、A. A. Gidaspov、E. V. Selezneva、I. V. Ul’yankina、D. B. Krivolapov、I. A. Litvinov、O. S. Eltsov
DOI:10.1007/s10593-011-0676-5
日期:2011.2
The reaction of 6-R-4-methoxy-1,3,5-triazin-2-ylnitroformaldoximes with dimethyl malonate gives the zwitterionic 4-methoxycarbonyl-3-(4-R-6-methoxy-1,3,5-triazin-2-yl)-4,5-dihydroisoxazol-5-ones. X-ray structural analysis has been carried out on the zwitterionic 4-methoxycarbonyl-3-(4-methoxy-6-piperidino-1,3,5-triazin-2-yl)-4,5-dihydroisoxazol-5-one.
Reactions of 1,3,5-triazinylnitro-formaldoximes. 2*. The reaction of 1,3,5-triazinylnitroformaldoximes with monosubstituted acetylenes
作者:V. V. Bakharev、A. A. Gidaspov、E. V. Peresedova、D. B. Krivolapov、E. V. Mironova、I. A. Litvinov
DOI:10.1007/s10593-009-0382-8
日期:2009.9
1,3,5-Triazinylnitrile oxides were prepared in situ from 2-R-4-R′-1,3,5-triazin-6-ylnitroformaldoximes and were treated with substituted acetylenes to give 3,5-disubstituted isoxazoles. The X-ray data obtained for 5-hydroxymethyl-3-(4′-dimethylamino-2′-methoxy-1,3,5-triazin-6′-yl)isoxazole is discussed.
Reactions of 1,3,5-triazinylnitroformaldoximes 5*. Synthesis of 5-R-3-(1,3,5-triazinyl)-4,5-dihydro-isoxazoles
作者:V. V. Bakharev、A. A. Gidaspov、E. V. Selezneva、O. S. El’tsov
DOI:10.1007/s10593-012-1076-1
日期:2012.9
1,3,5-Triazinylnitrile oxides, formed by heating (2-methoxy-4-R-1,3,5-triazin-6-yl)nitroformaldoximes, react with monosubstituted and 1,1-disubstituted ethylenes with the formation of 3-(1,3,5-triazinyl)-5-monosubstituted and 3-(1,3,5-triazinyl)-5,5-disubstituted 2-isoxazolines. The cycloaddition occurs with high regioselectivity to give exclusively 2-isoxazolines substituted at the positions 3 and 5.