UNEXPECTED REACTION OF ETHYL 4-(CHLOROMETHYL)PYRAZOLO- [5,1-C][1,2,4]TRIAZINE-3-CARBOXYLATES WITH THIOUREA AND ITS MECHANISM ArticleLedenyova I.V., Falaleev A.V., Shikhaliev K.S., Ryzhkova E.A., Zubkov F.I.Russian Journal of General Chemistry. Том 88. 2018. С. 73-79