scholarly journals Regioselective Synthesis of Some Thio Analogues of Quinolone Antibacterials via Borate Complex of Quinolone Carboxylic Acid Catalyzed by DABCO under Microwave Irradiation

2014 ◽  
Keyword(s):  
Carboxylic Acid ◽  
Microwave Irradiation ◽  
Regioselective Synthesis ◽  
Borate Complex ◽  
Acid Catalyzed

Regioselective Synthesis of Quinolone Antibacterials via Borate Complex of Quinolone Carboxylic Acid.

ChemInform ◽  
2006 ◽  
Vol 37 (6) ◽  
Author(s):  
Majid M. Heravi ◽  
Zeinab S. Jaddi ◽  
Hossein A. Oskooie ◽  
Shahnaz Khaleghi ◽  
Mitra Ghassemzadeh
Keyword(s):  
Carboxylic Acid ◽  
Regioselective Synthesis ◽  
Borate Complex

Silica sulfuric acid-catalyzed expeditious environment-friendly hydrolysis of carboxylic acid esters under microwave irradiation

2008 ◽  
Vol 62 (6) ◽  
Author(s):  
Zheng Li ◽  
Jing Liu ◽  
Xue Gong ◽  
Xuerong Mao ◽  
Xiunan Sun ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Carboxylic Acid ◽  
Microwave Irradiation ◽  
High Yield ◽  
Silica Sulfuric Acid ◽  
Environment Friendly ◽  
Acid Catalyzed ◽  
Work Up ◽  
Hydrolysis Of ◽  
Acid Esters

AbstractSilica sulfuric acid was found to be an efficient, recoverable, reusable and environment-friendly catalyst for the fast hydrolysis of various carboxylic acid esters in high conversions and selectivities under microwave irradiation conditions. This protocol has the advantages of no corrosion, no environmental pollution, high reaction rate, high yield, and simple work-up procedure.

Regioselective Synthesis of Quinolone Antibacterials via Borate Complex of Quinolone Carboxylic Acid

2005 ◽  
Vol 2005 (9) ◽  
pp. 578-579 ◽  
Author(s):  
Majid M. Heravi ◽  
Zeinab S. Jaddi ◽  
Hossein A. Oskooie ◽  
Shahnaz Khaleghi ◽  
Mitra Ghassemzadeh
Keyword(s):  
Carboxylic Acid ◽  
Carboxylic Acids ◽  
Regioselective Synthesis ◽  
Borate Complex ◽  
Borate Complexes ◽  
High Yields

1-substituted 7-chloro-6-fluoro-4-oxo-1,2-dihydroquinoline-3-carboxylic acids were converted to borate complexes. These compounds were treated with piperazine in presence of triethylamine to afford ciprofloxacin and norfloxacin in high yields.

scholarly journals 3′-Methyl-2-oxo-1′,5′-diphenyl-1′,7′-dihydrospiro[indoline-3,4′-pyrazolo[3,4-b]pyridine]-6′-carboxylic Acid

Molbank ◽  
10.3390/m1214 ◽  
2021 ◽  
Vol 2021 (2) ◽  
pp. M1214
Author(s):  
Pablo E. Romo ◽  
Braulio Insuasty ◽  
Jairo Quiroga ◽  
Rodrigo Abonia
Keyword(s):  
Carboxylic Acid ◽  
Microwave Irradiation ◽  
Reaction Condition ◽  
Water As Solvent

3′-methyl-2-oxo-1′,5′-diphenyl-1′,7′-dihydrospiro[indoline-3,4′-pyrazolo[3,4-b]pyridine]-6′-carboxylic acid was synthesized using diverse conditions. The best reaction condition consisted of using water as solvent under microwave irradiation, affording product in 76% yield.

Trifluoroacetic acid catalyzed highly regioselective bromocyclization of styrene-type carboxylic acid

2016 ◽  
Vol 14 (20) ◽  
pp. 4571-4575 ◽  
Author(s):  
Tao Chen ◽  
Ying-Yeung Yeung
Keyword(s):  
Carboxylic Acid ◽  
Trifluoroacetic Acid ◽  
Acid Catalyzed

A trifluoroacetic acid catalyzed highly 6-endo regioselective bromocyclization of styrene-type carboxylic acid has been developed.

scholarly journals A microwave-catalyzed rapid, efficient and ecofriendly synthesis of substituted pyrazol-5-ones (Short communication)

2003 ◽  
Vol 68 (10) ◽  
pp. 723-727 ◽  
Author(s):  
Vijay Dabholkar ◽  
Rahul Gavande
Keyword(s):  
Acetic Acid ◽  
Carboxylic Acid ◽  
Microwave Irradiation ◽  
Reaction Rate ◽  
Short Communication ◽  
Acid Hydrazide ◽  
Acetoacetic Ester ◽  
Carboxylic Acid Hydrazide ◽  
Conventional Methods

A series of 1-(3,4-dihydro-3-oxo-2H-1,4-benzoxazine-2-carbonyl)-3-methyl-4-(substituted phenylhydrazono)-2-pyrazolin-5-ones have been synthesized by the reaction of 2H-3,4-dihydro-3-oxo-1,4-benzoxazine-2-carboxylic acid hydrazide with substituted acetoacetic ester derivatives using acetic acid as solvent under microwave irradiation (MWI), as well as by conventional methods. The reaction rate is enhanced tremendously and the yields are improved under MWI as compared to conventional methods.

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