Synthesis and pharmacological activity of some new pyridazinones
摘要:
The synthesis of a series of piperazinyl-pyridazinones is reported. The blocking activity of these compounds was determined on the pre- and postsynaptic alpha-adrenoreceptors of isolated rat vas deferens. For compounds 7, 17 and 18, the hypotensive activity was also evaluated.
An Electrochemical Nickel-Catalyzed Arylation of 3-Amino-6-Chloropyridazines
摘要:
3-Amino-6-aryl- and 3-amino-6-heteroarylpyridazines have been obtained in generally good yield using a nickel-catalyzed electrochemical cross-coupling between 3-amino-6-chloropyridazines and aryl or heteroaryl halides at room temperature. Comparative experiments involving classical palladium-catalyzed reactions, such as Suzuki, Stille, or Negishi cross-couplings, reveal that the electrochemical method can constitute a reliable alternative tool for biaryl formation. A possible reaction mechanism is proposed on the basis of electrochemical analyses.
3-Amino-6-aryl- and 3-amino-6-heteroarylpyridazines have been obtained in generally good yield using a nickel-catalyzed electrochemical cross-coupling between 3-amino-6-chloropyridazines and aryl or heteroaryl halides at room temperature. Comparative experiments involving classical palladium-catalyzed reactions, such as Suzuki, Stille, or Negishi cross-couplings, reveal that the electrochemical method can constitute a reliable alternative tool for biaryl formation. A possible reaction mechanism is proposed on the basis of electrochemical analyses.
Synthesis and pharmacological activity of some new pyridazinones
The synthesis of a series of piperazinyl-pyridazinones is reported. The blocking activity of these compounds was determined on the pre- and postsynaptic alpha-adrenoreceptors of isolated rat vas deferens. For compounds 7, 17 and 18, the hypotensive activity was also evaluated.