3,4-Dihydropyrimidin-2(1H)-Ones: Fast Synthesis Under Microwave Irradiation in Solvent Free Conditions

Abstract Microwave irradiation has been used to accelerate the synthesis of the Biginelli compounds, in one-pot reaction between β-keto esters, aryl aldehydes, and urea. These solvent-free reactions show that it is possible to prepare these compounds in a short time reaction and with good yield and easily isolable.

[1]  A. Petit,et al.  New Solvent-Free Organic Synthesis Using Focused Microwaves , 1998 .

[2]  E. Hu,et al.  Unprecedented Catalytic Three Component One-Pot Condensation Reaction: An Efficient Synthesis of 5-Alkoxycarbonyl- 4-aryl-3,4-dihydropyrimidin-2(1H)-ones , 1998 .

[3]  P. Wipf,et al.  A SOLID PHASE PROTOCOL OF THE BIGINELLI DIHYDROPYRIMIDINE SYNTHESIS SUITABLE FOR COMBINATORIAL CHEMISTRY , 1995 .

[4]  S. Caddick Microwave assisted organic reactions , 1995 .

[5]  M. Benaglia,et al.  Gazz. Chim. Ital , 1995 .

[6]  C. Kappe 100 years of the biginelli dihydropyrimidine synthesis , 1993 .

[7]  S. Moreland,et al.  Dihydropyrimidine calcium channel blockers. 4. Basic 3-substituted-4-aryl-1,4-dihydropyrimidine-5-carboxylic acid esters. Potent antihypertensive agents. , 1992, Journal of medicinal chemistry.

[8]  A Hedberg,et al.  Dihydropyrimidine calcium channel blockers. 3. 3-Carbamoyl-4-aryl-1,2,3,4-tetrahydro-6-methyl-5-pyrimidinecarboxylic acid esters as orally effective antihypertensive agents. , 1991, Journal of medicinal chemistry.

[9]  G. Rovnyak,et al.  Substituted 1,4-dihydropyrimidines. 3. Synthesis of selectively functionalized 2-hetero-1,4-dihydropyrimidines , 1989 .

[10]  A. Ballesteros,et al.  1,4-Cycloaddition of 1,3-diazabutadienes with enamines: an efficient route to the pyrimidine ring , 1989 .

[11]  M. Malley,et al.  Synthesis of substituted 1,2,3,4-tetrahydro-6-methyl-2-thioxo-5-pyrimidinecarboxylic acid esters , 1987 .

[12]  R. Gedye,et al.  The use of microwave ovens for rapid organic synthesis , 1986 .

[13]  V. Gotor,et al.  Simple and regioselective synthesis of N-substituted pyrimidine-2(1H)-ones and -thiones , 1979 .