129190-67-6Relevant academic research and scientific papers
Diels-Alder reactions of 1,2,4-triazines with cyclic vinyl ethers
Rocha Gonsalves, Antonio M. D'A.,Pinhoe Melo, Teresa M. V. D.,Gilchrist, Thomas L.
, p. 5277 - 5290 (1993)
The Diels-Alder reaction of 1,2,4-triazines with cyclic vinyl ethers leads to a range of substituted pyridines with hydroxyalkyl and oxoalkyl side chains. With dihydrofuran the aromatization of the 1:1 adduct is inhibited by conformational factors and this allows 2:1 adducts to be isolated. Different regioselectivity is observed in the 2:1 adducts formed from ethyl 5-phenyl-1,2,4-triazine-3-carboxylate 1f and from ethyl 5,6-diphenyl-1,2,4-triazine-3-carboxylate 1b. An X-ray crystal structure of the 2:1 adduct 5 formed from 2,3-dihydrofuran and 1b is reported.
STUDIES ON as-TRIAZINE DERIVATIVES. XV. INTRAMOLECULAR REVERSE-ELECTRON DEMAND DIELS-ALDER REACTION OF 1,2,4-TRIAZINE DERIVATIVES
Sagi, Mataichi,Wada, Kunio,Konno, Shoetsu,Yamanaka, Hiroshi
, p. 1009 - 1021 (2007/10/02)
5,6-Diphenyl-1,2,4-triazine-3-carboxylic acid esters which have acetylenic function in the alcoholic moiety of the ester group were converted to the pyridine derivatives condensed with lactone ring by means of intramolecular reverse electron-demand Diels-
