Zobrazeno 1 - 10
of 87
pro vyhledávání: '"Boris S. Drach"'
Publikováno v:
Russian Journal of General Chemistry. 80:1345-1350
A convenient preparative procedure has been developed for the synthesis of previously unknown 2-aryl-5-arylsulfanyl-1,3-oxazole-4-carboxylic acids and their functional derivatives from accessible multicenter substrates of the general formula Cl2C=C(N
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6cabd16b4ee762dbd499297b83bc26c5
https://doi.org/10.1134/s1070363210070212
https://doi.org/10.1134/s1070363210070212
Autor:
Boris S. Drach, Eduard B. Rusanov, A. P. Kozachenko, Volodymyr Brovarets, O. V. Shablykin, A. N. Vasilenko
Publikováno v:
Russian Journal of General Chemistry. 80:994-1000
The products of addition of amidines to accessible 5-arylamino-4-cyano-1,3-oxazoles at heating in acetic acid undergo recyclization and afford new derivatives of 6-amino-5-acylaminopyrimidin-4-one, whose structure was reliably established using X-ray
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3dbbcdac3fa54d8ac3b5d215295daf00
https://doi.org/10.1134/s1070363210050233
https://doi.org/10.1134/s1070363210050233
Publikováno v:
Russian Journal of General Chemistry. 80:825-828
The accessible two-center electrophilic substrate 4-tosyl-2-phenyl-5-chloro-1,3-thiazole reacts regioselectively with N-, O-, and S-nucleophiles to eliminate a chloride ion. The analog of this substrate, 4-tosyl-2-phenyl-5-p-chlorophenylsulphonyl-1,3
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::183c3143eab2cb5922b6186b85c4b495
https://doi.org/10.1134/s1070363210040249
https://doi.org/10.1134/s1070363210040249
Publikováno v:
Russian Journal of General Chemistry. 80:121-126
Reactions of multicenter electrophilic substrates, 2-aryl-4-dichloromethylidene-1,3-oxazol-5(4H)-ones, with 2-aminopyridine, involved cleavage of the dihydrooxazole ring by the primary amino group of nucleophilic reagent and subsequent cyclization to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::19190d6a59338be0f86c96872140f424
https://doi.org/10.1134/s1070363210010160
https://doi.org/10.1134/s1070363210010160
Publikováno v:
Russian Journal of General Chemistry. 80:117-120
Reaction of the available 1-tosyl-2,2-dichloroethenyl isothiocyanate with sodium cyanide yields new clearly electrophilic substrate of thiazole nature containing the nitrile group, the tosyl residue, and the chlorine atom at C2, C4, and C5 respective
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e29f7ab7567f406b6447db0c9b38fa8
https://doi.org/10.1134/s1070363210010159
https://doi.org/10.1134/s1070363210010159
Publikováno v:
Russian Journal of General Chemistry. 79:1467-1472
Phosphonium ylides stabilized by nitrile and 4,5-di(arylsulfonyl)-1,3-thiazol-2-yl fragments show biphilic reactivity. They react with aromatic aldehydes upon heating revealing a noticeable activity of ylide center and are condensed with typical nucl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::453f6858cda26d4950340d7953481545
https://doi.org/10.1134/s107036320907010x
https://doi.org/10.1134/s107036320907010x
Autor:
Boris S. Drach, S. G. Pil’o, Volodymyr Brovarets, V. N. Sviripa, Alexander N. Chernega, V. M. Prokopenko
Publikováno v:
Russian Journal of General Chemistry. 79:496-499
Available polycentral unsaturated azlactones with 4-dichloromethylene group by successive treating with benzamidine and then with morpholine or its analogs were converted to substituted 5-acylamino-4-hydroxypyrimidines containing the residues of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9687924210424b9beef7392805b40cd5
https://doi.org/10.1134/s1070363209030256
https://doi.org/10.1134/s1070363209030256
Publikováno v:
Russian Journal of General Chemistry. 79:500-504
Available chlorine-containing enamides of the general formula Cl2C=CHNHCOR (I) easily react with benzamidine and its derivatives to give 1:1 adducts which under heating with sodium methylate transform to 2-(methoxymethyl)-4,5-diaryl-s-triazines. Reac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72f050bd56d990f0a3f826c70122d215
https://doi.org/10.1134/s1070363209030268
https://doi.org/10.1134/s1070363209030268
Publikováno v:
Russian Journal of General Chemistry. 78:2132-2136
Accessible 2,2-dichloro-1-p-tolylsulfonylethenyl isothiocyanate reacted with hydrazine hydrate to give 5-chloro-2-hydrazino-4-p-tolylsulfonyl-1,3-thiazole whose reactions with thiols and amines followed a complicated pattern. Treatment of 5-chloro-2-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb1e42b0124dd34054dc0a867e6c1076
https://doi.org/10.1134/s1070363208110248
https://doi.org/10.1134/s1070363208110248
Publikováno v:
Heteroatom Chemistry. 19:677-681
Based on readily available chloralamides, a preparative method for the synthesis of hitherto unknown 2,5-diaryl-3a,6a-dihydro[1,3]thiazolo[4,5-d][1,3]thiazoles with the Lawesson reagent has been elaborated. © 2008 Wiley Periodicals, Inc. Heteroatom
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c0c8552ad9d8c00079eeda188779d15
https://doi.org/10.1002/hc.20493
https://doi.org/10.1002/hc.20493