One‐pot synthesis of
<i>N</i>
<sup>2</sup>
‐aminoprotected 6‐substituted and cycloalka[
<i>d</i>
] 4‐trifluoromethyl‐2‐acetylaminopyrimidines
作者:Helio G. Bonacorso、Adriana Ferla、Cleber A. Cechinel、Nilo Zanatta、Marcos A. P. Martins
DOI:10.1002/jhet.5570450228
日期:2008.3
Abstractmagnified imageThe one‐pot synthesis of a novel series of amino‐protected 6‐alkyl‐, 6‐aryl‐, 6‐heteroaryl‐ and 5,6‐fused‐cycloalkane 4‐trifluoromethyl‐2‐acetylaminopyrimidines, where alkyl = Me; aryl = Ph, 4‐CH3Ph, 4‐FPh, 4‐ClPh, 4‐BrPh, 4‐OCH3Ph, 4‐NO2Ph, 4,4′‐biphenyl, 1‐naphthyl; heteroaryl = 2‐thienyl, 2‐furyl and cycloalkyl = c‐C6H4, c‐C7H5 from the reaction of substituted 4‐methoxy‐1,1,1‐trifluoroalk‐3‐en‐2‐ones with 1‐acetylguanidine in acetonitrile or propan‐2‐ol as solvent, is reported. The acetylamino group of 2‐acetylaminopyrimidines was hydrolyzed under three different conditions to afford the corresponding free 2‐aminopyrimidines.