Fast, Solvent-Free, and Highly Efficient Synthesis of Pyrazolo[3,4-b]Pyridines Using Microwave Irradiation and Khso4 as A Reusable Green Catalyst

Heterocycles ◽  
2019 ◽  
Vol 98 (10) ◽  
pp. 1408 ◽  
Author(s):  
Zhenhua Li ◽  
Jinjing Qin ◽  
Xiaomeng Sun ◽  
Yi Jin ◽  
Weike Su
Keyword(s):  
Microwave Irradiation ◽  
Solvent Free ◽  
Efficient Synthesis ◽  
Green Catalyst ◽  
Highly Efficient

Microwave-assisted palladium mediated efficient synthesis of pyrazolo[3,4-b]pyridines, pyrazolo[3,4-b]quinolines, pyrazolo[1,5-a]pyrimidines and pyrazolo[1,5-a]quinazolines

RSC Advances ◽  
2014 ◽  
Vol 4 (46) ◽  
pp. 24001-24006 ◽  
Author(s):  
Kommuri Shekarrao ◽  
Partha Pratim Kaishap ◽  
Venkateshwarlu Saddanapu ◽  
Anthony Addlagatta ◽  
Sanjib Gogoi ◽  
...  
Keyword(s):  
Microwave Irradiation ◽  
Efficient Method ◽  
Solvent Free ◽  
Efficient Synthesis ◽  
Aryl Aldehydes ◽  
Microwave Assisted ◽  
Fused Heterocycles ◽  
Palladium Catalyzed ◽  
Solvent Free Reaction

An efficient method was developed for the synthesis of pyrazole fused heterocycles via the palladium-catalyzed solvent free reaction of β-halovinyl/aryl aldehydes and 3-aminopyrazoles/5-aminopyrazoles under microwave irradiation in good yields.

Solvent-Free, Efficient Synthesis of 2,5-Piperazinediones from Boc-Protected Dipeptide Esters under Microwave Irradiation.

ChemInform ◽  
2005 ◽  
Vol 36 (41) ◽  
Author(s):  
Alberto Lopez-Cobenas ◽  
Pilar Cledera ◽  
J. Domingo Sanchez ◽  
Rafael Perez-Contreras ◽  
Pilar Lopez-Alvarado ◽  
...  
Keyword(s):  
Microwave Irradiation ◽  
Solvent Free ◽  
Efficient Synthesis

1,3-Dibromo-5,5-dimethylhydantoin as a useful reagent for efficient synthesis of 3,4-dihydropyrimidin-2-(1H)-ones under solvent-free conditions

2009 ◽  
Vol 63 (1) ◽  
Author(s):  
Mohammad Abdollahi-Alibeik ◽  
Zahra Zaghaghi
Keyword(s):  
Microwave Irradiation ◽  
Ethyl Acetoacetate ◽  
Biginelli Reaction ◽  
Reaction Times ◽  
Solvent Free ◽  
Efficient Synthesis ◽  
One Pot ◽  
Aliphatic Aldehydes ◽  
Solvent Free Conditions ◽  
High Yields

AbstractEfficient syntheses of 3,4-dihydropyrimidin-2-(1H)-ones and the corresponding thioxo derivatives using 1,3-dibromo-5,5-dimethylhydantoin (DBH) catalysis of a one-pot three-component Biginelli reaction of aldehydes, ethyl acetoacetate, and urea or thiourea under microwave irradiation are described. The advantages of this method are its short reaction times, high yields of the products, inexpensive and commercially available catalyst, and solvent-free conditions. Typical isolated yields exceed 70 % for arylaldehydes (9 examples) and aliphatic aldehydes (2 examples).

Expeditious and highly efficient synthesis of propargylamines using a Pd‐Cu nanowires catalyst under solvent‐free conditions

2019 ◽  
Vol 33 (6) ◽  
pp. e4917 ◽  
Author(s):  
Rongnan Yi ◽  
Zheng‐Jun Wang ◽  
Zhiwu Liang ◽  
Min Xiao ◽  
Xinhua Xu ◽  
...  
Keyword(s):  
Solvent Free ◽  
Efficient Synthesis ◽  
Cu Nanowires ◽  
Highly Efficient ◽  
Solvent Free Conditions
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