Pyrrole studies: 31. The structures of potentially tautomeric 1,2-dihydro-6-pyrrolo [3,4-]pyridazine-1-ones and 1,2,3,4-tetrahydro-6-pyrrolo [3,4-]pyridazine-1,4-diones
作者:Sermin Inel、R. Alan Jones、Cemil Ogretir
DOI:10.1016/0040-4020(84)85076-0
日期:1984.1
2-Dihydro-6H-pyrrolo[3,4-]pyridazine-1-ones exist predominantly as such (104-47: 1) in equilibrium with the 1-hydroxypyridazine form, whereas 1,2,3,4-tetrahydro-6-pyrrolo-[3,4-]pyridazine-1,4-diones in equilibrium with the monohydroxy-oxo tautomeric forms are preferred by a factor of only . 100 : 1. It was not possible to determine the position of equilibrium between the 1-hydroxy-6-pyrrolo[3,4-]pyridazine-4-one
1,2-二氢-6H-吡咯并[3,4- ]哒嗪-1-酮主要以这种形式(10 4-47:1)与1-羟基哒嗪形式平衡存在,而1,2,3,4-与单羟基-氧代互变异构形式平衡的四氢-6-吡咯并-[3,4- ]哒嗪-1,4-二酮是优选的。100:1。这是不可能的,以确定平衡的1-羟基- 6之间的位置-吡咯并[3,4 ]哒嗪-4-酮和1,4-二羟基-6- -吡咯并[3,4- ]哒嗪结构。