One-pot synthesis of 2,4,6-triarylpyridines from β-nitrostyrenes, substituted salicylic aldehydes and ammonium acetate
作者:Xushun Qing、Ting Wang、Feixiang Zhang、Cunde Wang
DOI:10.1039/c6ra18630k
日期:——
A protocol for the synthesis of 2,4,6-trisubstitutedpyridines from the β-nitrostyrenes, available substituted salicylic aldehydes and ammonium acetate was developed. The present strategy features high chemoselectivity and excellent tolerance for a broad range of functional groups, in which the β-nitrostyrenes generated from aldehydes and nitromethane, substituted salicylic aldehydes and ammonium acetate
NH<sub>4</sub>OAc-Promoted Domino Route to Hydroxyarylated Unsymmetrical Pyridines under Neat Conditions
作者:Meher Prakash、Santosh K. Gudimella、Rajni Lodhi、Soumitra Guin、Sampak Samanta
DOI:10.1021/acs.joc.9b02896
日期:2020.2.21
domino method has been established for modular synthesis of a diverse range of medicinally promising hydroxyarylated unsymmetrical pyridines in good to high chemical yields with an excellent regioselectivity. This domino process involves a range of N-sulfonyl ketimines as C,N-binucleophiles, enolizable ketones, and aromatic/heteroaromatic aldehydes using ammonium acetate as an ideal promoter under neat