N-Substituted Ureas and Thioureas in Biginelli Reaction Promoted by Chlorotrimethylsilane: Convenient Synthesis of N1-Alkyl-, N1-Aryl-, and N1,N3-Dialkyl-3,4-Dihydropyrimidin-2(1H)-(thi)ones
XANINA E. L.; MUTSENIETSE D. X.; KADYSH V. P.; DUBUR G. YA., XIMIYA GETEROTSIKL. SOED.,(1986) N 9, 1223-1227
作者:XANINA E. L.、 MUTSENIETSE D. X.、 KADYSH V. P.、 DUBUR G. YA.
DOI:——
日期:——
N-Substituted Ureas and Thioureas in Biginelli Reaction Promoted by Chlorotrimethylsilane: Convenient Synthesis of <i>N</i>1-Alkyl-, <i>N</i>1-Aryl-, and <i>N</i>1,<i>N</i>3-Dialkyl-3,4-Dihydropyrimidin-2(1<i>H</i>)-(thi)ones
The classical Biginelli reaction has been extended by the use of N-substituted ureas and thioureas. A set of N1-alkyl-, N1-aryl-, and N1,N3-dialkyl-3,4-dihydropyrimidin-2(1H)-(thi)ones was readily prepared in excellent yield when chlorotrimethylsilane in N,N-dimethylformamide was used as promoter and water scavenger.