Abstract
AbstractThe synthesis of some pyrido[2,3‐c]pyridazines from 5,8‐diehloro‐3‐methyl‐2‐oxo‐2H‐pyrano‐[2,3‐d]pyridazine (I) is described. Attempted oxidation of 8‐amino‐3‐chloro‐1,6‐dimethyl‐4,7‐dioxo‐1,4,7,8‐tetrahydropyrido[2,3‐c]pyridazine (VI) with LTA led only to the deaminated compound VII. Treatment of VI with LTA A in the presence of cyclohexene gave the nitrene adduct XI.
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