scholarly journals Solvent-free Synthesis of Nitriles from Aldehydes Catalyzed by KF/Al2O3, Montmorillonite KSF and K10

2006 ◽  
Vol 3 (3) ◽  
pp. 164-168
Author(s):  
Li-Jun Li ◽  
Ying-Xia Song ◽  
Yan-Su Gao ◽  
Yan-Feng Li ◽  
Jian-Feng Zhang
Keyword(s):  
Microwave Irradiation ◽  
Solvent Free ◽  
One Pot ◽  
Effective Catalyst ◽  
Multistep Procedure ◽  
Solvent Free Synthesis

Multistep and one-pot conversion of aldehydes to nitriles were carried out conveniently with out solvent using KF/Al2O3, montmorillonite KSF and K10 as catalyst, under microwave irradiation. The reactions are completed within 6-8 min to give satisfactory yields. KF/Al2O3was more effective catalyst both in multistep procedure and one-pot reaction.

A One-Pot, Three-Component, Solvent-Free Synthesis of Novel 6H-Chromeno[3’,4’:5,6]Pyrido[2,3-d]Pyrimidine-Triones under Microwave Irradiation

2018 ◽  
Vol 42 (12) ◽  
pp. 604-607
Author(s):  
Loghman Firoozpour ◽  
Hoda Yahyavi ◽  
Ramona Ejtemaei ◽  
Setareh Moghimi ◽  
Alireza Foroumadi
Keyword(s):  
Microwave Irradiation ◽  
Efficient Method ◽  
Barbituric Acid ◽  
Reaction Times ◽  
Solvent Free ◽  
One Pot ◽  
Solvent Free Conditions ◽  
Substituted Benzaldehydes ◽  
High Yields ◽  
Solvent Free Synthesis

A green and efficient method for preparing novel heterocyclic systems is established through the reaction of differently substituted benzaldehydes, barbituric acid and 4-amino-2H-chromene-2-one under solvent-free conditions. This method affords 6H-chromeno[3’,4’:5,6] pyrido[2,3-d]pyrimidine-trione derivatives in high yields and short reaction times.

scholarly journals Microwave Assisted Solvent Free Synthesis of Azomethines from Aryl Aldehydes on Melamin Formaldehyde as Solid Support

2011 ◽  
Vol 8 (3) ◽  
pp. 1142-1145 ◽  
Author(s):  
Ramin Rezaei ◽  
Mohammad K. Mohammadi ◽  
Tahereh Ranjbar
Keyword(s):  
Microwave Irradiation ◽  
Hydroxylamine Hydrochloride ◽  
Solid Support ◽  
Solvent Free ◽  
Melamine Formaldehyde ◽  
One Pot ◽  
Aryl Aldehydes ◽  
Microwave Assisted ◽  
High Yields ◽  
Solvent Free Synthesis

Various aryl aldehydes underwent prompt one pot conversion into the corresponding azomethines in high yields by reacting with hydroxylamine hydrochloride supported on melamine formaldehyde under microwave irradiation.

Microwave-Expedited One-Pot, Two-Component, Solvent-Free Synthesis of Functionalized Pyrimidines

2007 ◽  
Vol 60 (2) ◽  
pp. 120 ◽  
Author(s):  
Shyamaprosad Goswami ◽  
Subrata Jana ◽  
Swapan Dey ◽  
Avijit Kumar Adak
Keyword(s):  
Microwave Irradiation ◽  
Ethyl Cyanoacetate ◽  
Solvent Free ◽  
Combinatorial Type ◽  
One Pot ◽  
Dicarbonyl Compounds ◽  
Solvent Free Conditions ◽  
Two Component ◽  
One Step ◽  
Solvent Free Synthesis

The synthesis of a series of diversely substituted pyrimidines under solvent-free conditions in good yields is described. Under microwave irradiation, a variety of nucleophilic substrates containing the N–C–N unit with β-dicarbonyl compounds, ethyl cyanoacetate, malononitrile, and chalcones was cyclized to give pyrimidines. A combinatorial type approach for a one-step synthesis has been developed where a ring-closing condensation is followed by spontaneous aromatization to afford 28 functionalized and aryl/alkyl substituted pyrimidines.

KHSO4×H2O/SiO2-Catalyzed, One-Pot, Solvent-Free Synthesis of Pyrazolines, Tetrahydrocarbozoles and Indoles Using Microwave Irradiation.

ChemInform ◽  
2007 ◽  
Vol 38 (7) ◽  
Author(s):  
Kamal K. Kapoor ◽  
Bilal A. Ganai ◽  
Satish Kumar ◽  
Charanjeet S. Andotra
Keyword(s):  
Microwave Irradiation ◽  
Solvent Free ◽  
One Pot ◽  
Solvent Free Synthesis
Sign in / Sign up

Export Citation Format

Share Document