ChemInform Abstract: Peculiar Electrophilic Heterocyclization of 5-Allyl-6-thioxopyrazolo[3,4-d]pyrimidin-4-one.

ChemInform ◽  
2013 ◽  
Vol 44 (49) ◽  
pp. no-no
Author(s):  
O. V. Svaljavyn ◽  
M. Yu. Onysko ◽  
A. V. Turov ◽  
Yu. G. Vlasenko ◽  
V. G. Lendel
Keyword(s):  
Electrophilic Heterocyclization

ChemInform Abstract: Cyanoacetylene and Its Derivatives. Part 9. Electrophilic Heterocyclization of β-Aminocyanoethylenic Acetals.

1986 ◽  
Vol 17 (23) ◽  
Author(s):  
YU. M. SKVORTSOV ◽  
A. G. MAL'KINA ◽  
O. M. FARTYSHEVA ◽  
M. V. SIGALOV ◽  
B. A. TROFIMOV
Keyword(s):  
Electrophilic Heterocyclization

Heterocyclization of 5,6-disubstituted 3-alkenyl-2-thioxothieno[2,3-d]pyrimidin-4-one with p-alkoxyphenyltellurium trichloride

2016 ◽  
Vol 22 (6) ◽  
Author(s):  
Mykola Kut ◽  
Mikhajlo Onysko ◽  
Vasyl Lendel
Keyword(s):  
Electrophilic Heterocyclization

AbstractElectrophilic heterocyclization of 5,6-disubstituted 3-alkenyl-2-thioxothieno[2,3-

Synthesis of [1,3]thiazolo[3,2-b][1,2,4]triazol-7-ium and [1,2,4]triazolo[5,1-b][1,3]thiazin-4-ium salts via regioselective electrophilic cyclization of 3-[(2-alken-1-yl)sulfanyl]-4H-1,2,4-triazoles

2015 ◽  
Vol 21 (6) ◽  
pp. 397-401 ◽  
Author(s):  
Mikhailo Slivka ◽  
Nataliya Korol ◽  
Ivan Rusyn ◽  
Vasyl Lendel
Keyword(s):  
Electrophilic Cyclization ◽  
Convenient Procedure ◽  
Electrophilic Heterocyclization

AbstractA convenient procedure for the regioselective preparation of [1,3]thiazolo[3,2-b][1,2,4]triazol-7-ium 10 and [1,2,4]triazolo[5,1-b][1,3]thiazin-4-ium salts 9 via regioselective electrophilic cyclization of 3-[(2-alken-1-yl)sulfanyl]-4H-1,2,4-triazoles 3 is reported. Direction of electrophilic heterocyclization strongly depends on nature of the alkenyl substitutent.

Regio- and stereoselective synthesis of [1,3]thiazolo[3,2-b][1,2,4]triazol-7-ium salts via electrophilic heterocyclization of 3-S-propargylthio-4Н-1,2,4-triazoles and their antimicrobial activity

2017 ◽  
Vol 23 (2) ◽  
pp. 109-113 ◽  
Author(s):  
Mikhailo Slivka ◽  
Nataliya Korol ◽  
Valerij Pantyo ◽  
Vjacheslav Baumer ◽  
Vasil Lendel
Keyword(s):  
Antimicrobial Activity ◽  
Diffraction Analysis ◽  
Stereoselective Synthesis ◽  
Geometric Isomers ◽  
X Ray Diffraction ◽  
X Ray ◽  
H Nmr ◽  
Electrophilic Heterocyclization ◽  
Better Than ◽  
C Nmr

AbstractA procedure for the preparation of the title salts via regioselective halocyclization of 3-S-propargylthio-4Н-1,2,4-triazoles is reported. Stereoselectivity of electrophilic heterocyclization depends on the nature of the electrophilic reagent: bromination is better than iodobromination and iodination. The heterocyclization with tellurium tetrahalogenides leads to the formation of a mixture of geometric isomers of the salts. Their structure was confirmed by 1H NMR, 13C NMR, НМВС and single crystal X-ray diffraction analysis.

Electrophilic heterocyclization of 6-alken(yn)ylsulfanyl-pyrazolo[3,4-d]pyrimidin-4(5H)-ones

2008 ◽  
Vol 44 (9) ◽  
pp. 1362-1368 ◽  
Author(s):  
A. V. Bentya ◽  
R. I. Vas’kevich ◽  
A. V. Bol’but ◽  
M. V. Vovk ◽  
V. I. Staninets ◽  
...  
Keyword(s):  
Electrophilic Heterocyclization
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