1-Alkyl-1,2,4-triazinium ylides as 1,3-dipoles in a cycloaddition reaction with diethyl acetylenedicarboxylate [Electronic resource] / O. N. Chupakhin, B. V. Rudakov, S. G. Alexeev, S. V. Shorshnev, V. N. Charushin // Mendeleev Communications. - 1992. - N 3. - P. 85-86. - ISSN 0959-9436. - URL: http://www.sciencedirect.com/science/article/pii/S0959943692718598. - (Дата обращения: 10.10.2011)