Solvent-free reaction of 1,2,4-triazine-5-carbonitriles with 4-(cyclohex-1-en-1-yl)morpholine. unexpected decyanation in addition to classical aza-Diels–Alder reaction [Text] / D. S. Kopchuk, A. F. Khasanov, N. V. Chepchugov, I. S. Kovalev, G. V. Zyryanov, V. L. Rusinov, O. N. Chupakhin // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2017. - Vol. 53, № 1. - P. 99-102.