Neste trabalho descreve-se a catálise sob fase líquida de 4,5,8a-triarylhexahydropyrimido[4,5-d] pyrimidine-2,7(1H,3H)-diones (4a-k) em um pote, catalisada por SiO2-SO3H. O catalisador é preparado facilmente, sendo altamente estável, muito simples de usar e reciclável após cinco vezes sem perda significativa de atividade. SiO2-SO3H catalyzed one-pot synthesis of 4,5,8a-triarylhexahydropyrimido[4,5-d]pyrimidine-2,7(1H,3H)-diones (4a-k) is reported under liquid phase catalysis. The catalyst is easily prepared, highly stable, very simple to handle and recycled for five times without loss of significant activity
Indeno[2′,1′:5,6]pyrido[2,3-d]pyrimidin-4,6-(5H,11H)dione derivatives were synthesized regioselectiv...
We are reporting a simple, efficient and green protocol for the synthesis of chromenes and dihydropy...
A simple, efficient and ecofriendly one pot synthesis protocol has been developed for the synthesis ...
An efficient method for the synthesis of 4,6-diarylpyrimidin-2(1H)-ones or thiones by using SiO2.CAA...
Aim and objective: A single-pot three-component reaction for a competent preparation of biologically...
A series of trifluoromethylated hexahydropyrimidines was synthesized using Preyssler heteropoly acid...
<div><p></p><p>A series of highly functionalized piperidine derivatives was synthesized through one-...
The preparation of N-sulfonyl-1,2,3,4-tetrahydroisoquinolines, N-sulfonyl-2,3,4,5-tetrahydro-1H-2-be...
An environmentally benign method for the synthesis of octahydro-quinazolin-2, 5-diones by the reacti...
A simple, green and efficient solventless procedure for the synthesis of 3,4-dihydropyrimidin-2-(1H)...
Solid acid catalysts based on the direct incorporation of the vanadium Keggin heteropolyacid (PMo11V...
Solid acid catalysts based on the direct incorporation of the vanadium Keggin heteropolyacid (PMo11V...
In this Research Article, we report an efficient synthesis of 1,3-dimethyl-5-aryl-7-(pyridine-3(2)(4...
<p>An efficient heterogeneous method for the synthesis of diarylacetic acids was developed utilizing...
The ionic liquid catalyst 3-sulfonic acid-1-imidazolopyridinium hydrogen sulfate, [Simp]HSO4 was fou...
Indeno[2′,1′:5,6]pyrido[2,3-d]pyrimidin-4,6-(5H,11H)dione derivatives were synthesized regioselectiv...
We are reporting a simple, efficient and green protocol for the synthesis of chromenes and dihydropy...
A simple, efficient and ecofriendly one pot synthesis protocol has been developed for the synthesis ...
An efficient method for the synthesis of 4,6-diarylpyrimidin-2(1H)-ones or thiones by using SiO2.CAA...
Aim and objective: A single-pot three-component reaction for a competent preparation of biologically...
A series of trifluoromethylated hexahydropyrimidines was synthesized using Preyssler heteropoly acid...
<div><p></p><p>A series of highly functionalized piperidine derivatives was synthesized through one-...
The preparation of N-sulfonyl-1,2,3,4-tetrahydroisoquinolines, N-sulfonyl-2,3,4,5-tetrahydro-1H-2-be...
An environmentally benign method for the synthesis of octahydro-quinazolin-2, 5-diones by the reacti...
A simple, green and efficient solventless procedure for the synthesis of 3,4-dihydropyrimidin-2-(1H)...
Solid acid catalysts based on the direct incorporation of the vanadium Keggin heteropolyacid (PMo11V...
Solid acid catalysts based on the direct incorporation of the vanadium Keggin heteropolyacid (PMo11V...
In this Research Article, we report an efficient synthesis of 1,3-dimethyl-5-aryl-7-(pyridine-3(2)(4...
<p>An efficient heterogeneous method for the synthesis of diarylacetic acids was developed utilizing...
The ionic liquid catalyst 3-sulfonic acid-1-imidazolopyridinium hydrogen sulfate, [Simp]HSO4 was fou...
Indeno[2′,1′:5,6]pyrido[2,3-d]pyrimidin-4,6-(5H,11H)dione derivatives were synthesized regioselectiv...
We are reporting a simple, efficient and green protocol for the synthesis of chromenes and dihydropy...
A simple, efficient and ecofriendly one pot synthesis protocol has been developed for the synthesis ...