Synthesis of analogs of amrinone: 4-(3,4-Disubstitutedphenyl)pyridines and derivatives thereof
作者:Baldev Singh、George Y. Lesher
DOI:10.1002/jhet.5570280416
日期:1991.6
4-(3,4-Dimethoxyphenyl)pyridine (5c) prepared by the coupling of 3,4-dimethoxyphenyldiazonium chloride with pyridine was converted to 4-(4-pyridinyl)benzene-1,2-diol (6c) by treating with hydrobromic acid. Diazotization of 4-(4-pyridinyl)benzeneamine (7) and 3-(4-pyridinyl)benzeneamine (12) gave the corresponding phenols 8 and 13 which were nitrated to give 2-nitro-4-(4-pyridinyl)phenol (9) and 2-