FURAN RAN RIN ING G TRANS NSFORMA ORMATION TION AS A KEY EY STAGE GE IN IN PYRROL OLOPYRAZ OPYRAZINE INE FRAMEW AMEWORK ORK SYNTHESI HESIS Tatyana A. Stroganova, Vladimir K. Vasilin, Georgiy A. Kovalenko, Gennady. D. Krapivin Kuban St State Tech chnologi gical cal Un Univer ersi sity ty, Departm tment ent of Bioorgani anic c Chemistr try and Tech chnica cal Microbi robiolog ology, , Moskovskaya st st. 2, Krasnodar r 350072, 2, Russian n Federatio tion; n; E-mail: tatka_s@m s@mail.ru .ru
Scheme 1 R-NH 2 T. A. Stroganova, V. M. Redkin, G. A. Kovalenko, V. K. Vasilin, G. D. Krapivin, Chemistry of Heterocyclic Compounds . 49 (2013), 1264-1273 2
Scheme 2 2 A 1 3
Scheme 3 HCl/AcOH dioxane 3 2 - 2H 2 O 1 HCl/AcOH dioxane 4 4
Scheme 4 H+, benzene HCl/AcOH X = H, CH 3 , Cl; R = CH 3 , C 2 H 5 5
Recommend
More recommend