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Thiourea dioxide: An efficient and reusable organocatalyst for the rapid one-pot synthesis of pyrano[4, 3-b]pyran derivatives in water
Pyrano[4,3-b]pyran Thiourea dioxide 4-Hydroxy-6-methylpyran-2-one One-pot synthesis
2014/3/11
A series of pyrano[4,3-b]pyran derivatives have been synthesized in excellent yields by the reaction of aromatic aldehydes with malononitrile or cyanoacetate and 4-hydroxy-6-methylpyran-2-one in water...
Application of Amino-Functionalized SBA-15 Type Mesoporous Silica in One-Pot Synthesis of Spirooxindoles（图）
amino-functionalized SBA-15 spirooxindoles isatin nano-reactor green synthesis
2013/10/4
Amino-functionalized SBA-15 (SBA-Pr-NH2) has been used as a new basic nanocatalyst in the one-pot synthesis of spirooxindole derivatives via the three-component condensation reaction of isatins, activ...
Sulfonated Carbon Catalyzed Biginelli Reaction for One-Pot Synthesis of 3,4-Dihydropyrimidin-2(1H)-ones and -thiones（图）
sulfonated carbon solid acid Biginelli reaction heterogeneous catalysis solvent-free condition
2013/10/8
A sulfonated carbon material was shown to be a highly efficient, eco-friendly, and recyclable solid acid catalyst for the Biginelli reaction of β-ketoester, aldehyde, and urea or thiourea under solven...
Ammonium Dihydrogen Phosphate Catalyst for One-Pot Synthesis of 3,4-Dihydropyrimidin-2(1H)-ones（图）
3,4-dihydropyrimidin-2-(1H)-one ammonium dihydrogen phosphate solvent free condensation
2013/10/8
A one-pot three component Biginelli condensation of different substituted aromatic and aliphatic aldehydes with ethyl acetoacetate and urea to the respective 3,4-dihydropyrimidin-2-(1H)-ones under sol...
Silica Sulfuric Acid: An Efficient Heterogeneous Catalyst for the One-Pot Synthesis of 1,4-Dihydropyridines under Mild and Solvent-Free Conditions（图）
aldehyde ethyl acetoacetate ammonium acetate silica sulfuric acid 1,4-dihydropyridine
2013/10/12
A series of 1,4-dihydropyridines have been prepared by a one-pot condensation of aldehydes, ethyl acetoacetate, and ammonium acetate in the presence of a heterogeneous catalyst silica sulfuric acid at...