Zobrazeno 1 - 5
of 5
pro vyhledávání: '"Volodymyr V. Pyrozhenko"'
Autor:
Oleg V. Shishkin, Vitaly I. Kalchenko, Svitlana V. Shishkina, Mariia A. Klyachina, Olexander A. Yesypenko, Vyacheslav I. Boyko, Ivan F. Tsymbal, Volodymyr V. Pyrozhenko
Publikováno v:
Journal of Inclusion Phenomena and Macrocyclic Chemistry. 74:265-275
Monosodium salt of p-tert-butylcalix[4]arene reacts with alkyl halides or aroyl chlorides in DMF formed the cone-shaped monoalkyloxycalix[4]arenes or 1,3-diacyloxycalix[4]arenes, respectively. Diacyloxycalix[4]arenes are easily transformed into monoa
Autor:
Vitaly I. Kalchenko, Alexander Shivanyuk, Roman I. Zubatyuk, Oleg V. Shishkin, Vyacheslav I. Boyko, Volodymyr V. Pyrozhenko
Publikováno v:
Tetrahedron Letters. 47:7775-7778
Calix[4]arenes bearing a methoxy and an R or S α-phenylethylacetamido group at the narrow rim of macrocycles are stereoselectively acylated with 1 equiv of trichloroacetyl isocyanate to give chiral asymmetrically substituted calix[4]arenecarbamates
Autor:
Alexander M. Pinchuk, Volodymyr V. Pyrozhenko, Mykhaylo V. Vovk, and Andriy V. Bol'but, Alexander N. Chernega, Volodymyr A. Sukach
Publikováno v:
Heteroatom Chemistry. 16:426-436
Functionalized 2,3-dihydro-1,3-thiazin-4(1H)-one derivatives have been synthesized by cyclocondensation of 3-alkyl(aryl)amino-2-cyano-3-mercaptoacrylamides with aldehydes and ketones under acidic catalysis. 6-Alkyl(aryl)amino-5-cyano-2,3-dihy- dro-1,
Publikováno v:
ChemInform. 37
By the reaction of 6-aryl(alkyl)amino-5-cyano-2,3-dihydro-1,3-thiazin-4(10)-ones with α-halogenoketones in the presence of triethylamine, 2,3-dihydrothieno[2,3-d]pyrimidin-4(1H)-ones have been synthesized and their acid-catalyzed recyclization to 2,
Publikováno v:
ChemInform. 34
2-Amino-5-alkoxycarbonylfurans 1a–c react with 1-chloro-2,2,2-trihalogenoethyliden-O-methylurethanes 2a,b at room temperature to give N-(2-furyl)-N′-methoxycarbonyl-trihalogenoacetamidines 3a–f which cyclize into 2-trihalogenomethyl-3,4-dihydro