Уважаемые коллеги! Помогите, пожалуйста, скачать 5 статеек:
1) Chebanov, Valentin A.; Sakhno, Yana I.; Desenko, Sergey M.; Shishkina, Svetlana V.; Musatov, Vladimir I.; Shishkin, Oleg V.; Knyazeva, Irina V. Three-Component Procedure for the Synthesis of 5-Aryl-5,8-dihydroazolo[1,5-a]pyrimidine-7-carboxylic Acids. Synthesis 2005, 15, 2597-2601.
2) El-Agamey, Abdel-Ghani A.; Abdalla, Sanaa O.; Elmoghayar, Mohamed R. H. α,β-Unsaturated nitriles in heterocyclic synthesis: Synthesis of some new pyrazolo[1,5-a]pyrimidine derivatives. Monatshefte fuer Chemie; English; 115; 1984; 1413-1420.
3) Pryadeina, M. V.; Burgart, Ya. V.; Saloutin, V. I.; Kodess, M. I.; Ulomskii, E. N.; Rusinov, V. L. Synthesis of 7-Alkyl(aryl)-6-alkoxycarbonyl-5-fluoroalkyl-1,2,4-tri(tetr)azolo[1,5-a]pyrimidines. Russian Journal of Organic Chemistry 2004, 40, 6, 902-907.
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http://dx.doi.org/10.1023/B:RUJO.0000044558.47152.65
4) Gein, V. L.; Gein, L. F.; Tsyplyakova, E. P.; Panova, O. S. Synthesis of 6-Acyl-7-aryl-4,7-dihydrotetrazolo[1,5- a ]pyrimidine-5-carboxylic acids and their methyl esters. Russian Journal of Organic Chemistry 2007, 43, 9, 1382-1386.
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http://dx.doi.org/10.1134/S1070428007090205
5) Gein, V. L.; Gein, L. F.; Tsyplyakova, E. P.; Rozova, E. A. Synthesis of Methyl 6-Acyl-7-aryl-4,7-dihydrotetrazolo-[1,5-a]pyrimidine-5-carboxylates. Russian Journal of Organic Chemistry 2003, 39, 5, 753-754.
6) Fedorova, O. V.; Zhidovinova, M. S.; Rusinov, G. L.; Ovchinnikova, I. G. Aminoazoles in the three-component synthesis of 7-substituted 6-ethoxycarbonyl-5-methyl-4,7-dihydroazolo[1,5-a]pyrimidines. Russian Chemical Bulletin; English; 2003, 52, 8, 1768-1769.
7) Desenko, S. M.; Gladkov, E. S.; Komykhov, S. A.; Shishkin, O. V.; Orlov, V. D. Partially Hydrogenated Aromatic Substituted Tetrazolo[1,5-a]pyrimidine. Chemistry of Heterocyclic Compounds 2001, 37, 6, 747-754.

Orlov, V. D.; Desenko, S. M.; Pivnenko, N. S. Synthesis and tautomerism of 5,7-diaryl-4,7(6,7)-dihydrotetrazolo[1,5a]pyrimidines. Chemistry of Heterocyclic Compounds 1988, 24, 11, 1233-1237.
Заранее большое спасибо за помощь!!!