Regioselectively Controlled Synthesis of N-Substituted (Trifluoromethyl)pyrimidin-2(1<i>H</i>)-ones
作者:Andreia M. P. W. da Silva、Fabio M. da Silva、Helio G. Bonacorso、Clarissa P. Frizzo、Marcos A. P. Martins、Nilo Zanatta
DOI:10.1021/acs.joc.6b00382
日期:2016.5.6
A simple and regioselectively controlled method for the preparation of both 1,4- and 1,6-regioisomers of 1-substituted 4(6)-trifluoromethyl-pyrimidin-2(1H)-ones is described. Both regioisomers were synthesized from the cyclocondensation reaction of 4-substituted 1,1,1-trifluoro-4-methoxybut-3-en-2-ones: with nonsymmetric ureas for the 1-substituted 4-(trifluoromethyl)pyrimidin-2(1H)-ones (1,4-isomer)