Polycyclic pyridazines. II [3]. Synthesis of pyrazolo [4′, 3′: 5, 6] pyrido [2, 3??d] pyrid??azine derivatives from dimethyl pyrazolo [3, 4??d] pyrid??azine??5, 6?? …

Y Tominaga, JK Luo, LW Castle…

Index: Tominaga, Yoshinori; Luo, Jiann-Kuan; Castle, Lyle W.; Castle, Raymond N. Journal of Heterocyclic Chemistry, 1993 , vol. 30, # 1 p. 267 - 273

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Citation Number: 7

Abstract

Abstract The synthesis of the novel pyrazolo [4′, 3′: 5, 6] pyrido [2, 3-d] pyridazine ring system and some of its derivatives has been accomplished such as 4-amino-1-phenyl-5, 8- dioxo-, 4-amino-5, 8-dioxo-, 1-phenyl-5, 8-dioxo-, 5, 8-dioxo-, 5, 8-dichloro-1-phenyl-, 5- ethoxy-1-phenyl-and 8-ethoxy-1-phenylpyrazolo [4′, 3′: 5, 6] pyrido [2, 3-d] pyrid-azines.