Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 5-Methoxy-1H-indole-2-carbaldehyde, is researched, Molecular C10H9NO2, CAS is 21778-81-4, about Carbene-Catalyzed Enantioselective Aromatic N-Nucleophilic Addition of Heteroarenes to Ketones.Computed Properties of C10H9NO2.
The aromatic nitrogen atoms of heteroarylaldehydes were activated by carbene catalysts to react with ketone electrophiles. Multi-functionalized cyclic N,O-acetal products I [R1 = H, 8′-Br, 7′-Cl, etc.; R2 = H, 4-Br, 5-Cl, etc.; R3 = Me, Bn, Trt], II [R1 = H, 8-Br, 7-F, etc.; R2 = H, 3-Me, 4-Cl, etc.; R3 = Me, Et, Ph, Bn, CHPh2] and III [R1 = H, 6;t-Bu, 7’Cl, etc.; R2 = H, 4-Cl, 5-Me, etc.] were afforded in good to excellent yields and optical purities. Reaction involved the formation of an unprecedented aza-fulvene-type acylazolium intermediate. A broad range of N-heteroaromatic aldehydes and electron-deficient ketone substrates works effectively in this transformation. Several of the chiral N,O-acetal products afforded through this protocol exhibited excellent antibacterial activities against Ralstonia solanacearum (Rs) and are valuable in the development of novel agrichems. for plant protection.
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Reference:
Pyridazine – Wikipedia,
Pyridazine | C4H4N2 – PubChem