Category: pyridazine. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 5-Methoxy-1H-indole-2-carbaldehyde, is researched, Molecular C10H9NO2, CAS is 21778-81-4, about Non-Bonding Electron Pair versus π-Electrons in Solution Phase Halogen Bond Catalysis: Povarov Reaction of 2-Vinylindoles and Imines. Author is Suzuki, Takumi; Kuwano, Satoru; Arai, Takayoshi.
The non-bonding electron pair (n-pair) of heteroatoms and π-electrons are both efficient halogen bond (XB) acceptors. In solid and gas phase studies, n-pairs generally prevail over π-bonding orbitals as XB acceptors, whereas few studies have been conducted regarding the preference in solution phase. Herein, the Povarov reaction via the C-I···N XB interaction and [4+2] cycloaddition via the C-I···π XB interaction were evaluated, revealing that the n-pair was more dominant in the XB catalysis system in solution The XB donor-catalyzed Povarov reaction gave diverse indolyl-tetrahydroquinoline derivatives in good yields. Synthesis of indolyl-quinolines was also developed.
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Pyridazine – Wikipedia,
Pyridazine | C4H4N2 – PubChem