Уважаемые коллеги! Скачайте, плиз, 4 статьи:
1) Ella, D. A.; Goessnitzer, E.; Wendelin, W. Synthesis and structural elucidation of pyrimido-[1,2-a]benzimidazoles and fused derivatives. i. dihydropyrimido[1,2-a]benzimidazoles. J. Heterocycl. Chem. 1996, 33, 2, 373-382.
2) Shao, Qingqing; Tu, Shujiang; Li, Chunmei; Cao, Longji; Zhou, Dianxiang; Wang, Qian; Jiang, Bo; Zhang, Yan; Hao, Wenjuan. Green and high efficient synthesis of triaza-benzo
fluoren-6-one derivatives in water under microwave irradiation. Journal of Heterocyclic Chemistry 2008, 4, 2, 411–416.
3) Tu, Shujiang; Shao, Qingqing; Zhou, Dianxiang; Cao, Longji; Shi, Feng; Li, Chunmei. Microwave-assisted efficient synthesis of benzo[4,5]imidazo[1,2-a]-pyrimidine derivatives in water under catalyst-free conditions. Journal of Heterocyclic Chemistry 2007, 44, 6, 1401-1406.
4) Lipson, V. V.; Desenko, S. M.; Shishkina, S. V.; Shirobokova, M. G.; Shishkin, O. V.; Orlov, V. D. Cyclocondensation of 2-Aminobenzimidazole with Dimedone and Its Arylidene Derivatives. Chemistry of Heterocyclic Compounds 2003, 39, 8, 1041–1047.
Код: Выделить всё
http://dx.doi.org/10.1023/B:COHC.0000003522.71893.77
5) Gein, V. L.; Panova, O. S.; Tsyplyakova, E. P.; Varkentin, L. I.; Vakhrin, M. I.; Aliev, Z. L. Synthesis of 6-butyl-7-methylidene-8-phenyl-5 H -pyrrolo-[3,4- d ]tetrazolo[1,5- a ]pyrimidin-5-one. Russ. J. Org. Chem. 2007, 43, 9, 1419-1420.
Код: Выделить всё
http://dx.doi.org/10.1134/S1070428007090308
Заранее большое спасибо!!!
