ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

By using of the double-labelled C * N * - CH 2 - COOEt compound it has been proved that transformation of 6-nitro-1,2,4-triazolo[1,5-a]pyrimidine into 2-triazolylamino-3-carbethoxy-5-nitropyridine proceeds with incorporation of the C-C-N fragment of ethyl cyanoacetate into the pyridine ring.

Reaction of 6-nitroazolo[1,5-a]pyrimidines with cyanoacetamide, cyanoacetthioamide, or benzoylacetonitrile results in the conversion of the pyrimidine ring into a pyridine ring with the formation of 2-azolylamino-5-nitropyridines. Treatment of the latter with alcoholic sodium carbonate, or reaction of the azolopyrimidines with acetonitriles in an alkaline medium, affords 7-nitroazolo]1,5-a]pyrido[2,3-d]pyrimidines.

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

The anhydro base of an N-methyllepidinium salt reacts with s-tetrazines to give spiro hetarenes with 4,5- and 1,4-dihydropyridazine structures. The regioselectivity of the cycloaddition was established. In addition to spiro annelation, intramolecular cyclization to give compounds with a carcass structure, for which x-ray diffraction analysis was carried out, occurs when s-tetrazines with α-pyridyl substituents are used.

The interaction of 6-nitroazolo[1,5-a]pyrimidines with ethyl cyanoacetate is accompanied by transformation of the pyrimidine ring, forming derivatives of 2-azolylaminopyrimidine. The structure of the transformation products has been investigated in crystals and in solution.

AbstractThe reactivity of the title compound (XV) towards thiols was investigated earlier.

Complexes [PtL(dmso)Cl4] (L = MeCN, PhCN, MeCONH2, PhCONH2) are easily subject to hydrolysis at 20 °C and form a mixture of the ammine complexes Pt(IV) and corresponding carbonic acids.

In reactions with quinoxalinium salts in alcoholic-base media indan-1,3-dione acts as a C nucleophile, adding at the 2 or 3 position of the heterocycle to give the corresponding ylidene derivatives; attack by the nucleophile at the C(3) atom (the Β position relative to the quaternary nitrogen atom) is preceded by addition of alcohol at the a position. Dissociative substitution at the C(2) atom in 2-alkoxy-3-(1,3-dioxoindan-2-ylidene)-1,2,3,4-tetrahydroquinoxalines by another nucleophile makes it possible to regard lyate complexes as probable intermediates in cyclizations of 1,4-diazinium salts with dinucleophiles.

ChemInformVolume 19, Issue 3 Heterocyclic Compounds ChemInform Abstract: Heterocyclization of Compounds Containing Diazo and Cyano Groups. Part 4. Reaction of 2-Diazo-2-cyanoacetamides with P4S10 and Lawesson′s Reagent. Synthesis and Recyclization of 5-Amino-1,2,3-thiadiazole-4- thiocarboxamides. V. A. BAKULEV, V. A. BAKULEV Ural'skii politekhn. inst. im. Kirova, Sverdlovsk 620002Search for more papers by this authorE. F. DANKOVA, E. F. DANKOVA Ural'skii politekhn. inst. im. Kirova, Sverdlovsk 620002Search for more papers by this authorV. S. MOKRUSHIN, V. S. MOKRUSHIN Ural'skii politekhn. inst. im. Kirova, Sverdlovsk 620002Search for more papers by this authorE. O. SIDOROV, E. O. SIDOROV Ural'skii politekhn. inst. im. Kirova, Sverdlovsk 620002Search for more papers by this authorA. T. LEBEDEV, A. T. LEBEDEV Ural'skii politekhn. inst. im. Kirova, Sverdlovsk 620002Search for more papers by this author V. A. BAKULEV, V. A. BAKULEV Ural'skii politekhn. inst. im. Kirova, Sverdlovsk 620002Search for more papers by this authorE. F. DANKOVA, E. F. DANKOVA Ural'skii politekhn. inst. im. Kirova, Sverdlovsk 620002Search for more papers by this authorV. S. MOKRUSHIN, V. S. MOKRUSHIN Ural'skii politekhn. inst. im. Kirova, Sverdlovsk 620002Search for more papers by this authorE. O. SIDOROV, E. O. SIDOROV Ural'skii politekhn. inst. im. Kirova, Sverdlovsk 620002Search for more papers by this authorA. T. LEBEDEV, A. T. LEBEDEV Ural'skii politekhn. inst. im. Kirova, Sverdlovsk 620002Search for more papers by this author First published: January 19, 1988 https://doi.org/10.1002/chin.198803171Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article. Volume19, Issue3January 19, 1988 RelatedInformation

AbstractReaction of antibiotic 2‐methylfervenulone (MSD‐92) (I) with nucleophiles is investigated.