scholarly journals Direct synthesis of amides from nonactivated carboxylic acids using urea as nitrogen source and Mg(NO3)2 or imidazole as catalysts

2020 ◽  
Vol 11 (22) ◽  
pp. 5808-5818 ◽  
Author(s):  
A. Rosie Chhatwal ◽  
Helen V. Lomax ◽  
A. John Blacker ◽  
Jonathan M. J. Williams ◽  
Patricia Marcé
Keyword(s):  
Nitrogen Source ◽  
Carboxylic Acids ◽  
Direct Synthesis

This methodology is particularly useful for the direct synthesis of primary and N-methyl amides using urea as a stable and easy to manipulate nitrogen source.

Solvent-free, l -Leucine-Catalyzed Direct Dehydrative Esterification of Carboxylic Acids with Alcohols: Direct Synthesis of 3-Alkoxy 1(3 H )-isobenzofuranone

2017 ◽  
Vol 7 (1) ◽  
pp. 227-231 ◽  
Author(s):  
Manoranjan Kumar ◽  
Krishna Thakur ◽  
Sushila Sharma ◽  
Onkar S. Nayal ◽  
Neeraj Kumar ◽  
...  
Keyword(s):  
Carboxylic Acids ◽  
Direct Synthesis ◽  
Solvent Free

New direct synthesis of thioamides from carboxylic acids

1995 ◽  
Vol 36 (37) ◽  
pp. 6745-6746 ◽  
Author(s):  
Naleen Borthakur ◽  
Amrit Goswami
Keyword(s):  
Carboxylic Acids ◽  
Direct Synthesis

ChemInform Abstract: Direct Synthesis of Amides from Carboxylic Acids and Amines Using B(OCH2CF3)3.

ChemInform ◽  
2013 ◽  
Vol 44 (36) ◽  
pp. no-no
Author(s):  
Rachel M. Lanigan ◽  
Pavel Starkov ◽  
Tom D. Sheppard
Keyword(s):  
Carboxylic Acids ◽  
Direct Synthesis

Direct Synthesis of Tri/Difluoromethyl Ketones from Carboxylic Acids via Cross‐Coupling with Acyloxyphosphonium Ions

2021 ◽  
Author(s):  
Surya G. Prakash ◽  
Xanath Ispizua-Rodriguez ◽  
Socrates Munoz ◽  
Vinayak Krishnamurti ◽  
Thomas Mathew
Keyword(s):  
Carboxylic Acids ◽  
Direct Synthesis ◽  
Cross Coupling

Direct Oxidation of Primary Alcohols to Carboxylic Acids

Synthesis ◽  
2020 ◽  
Author(s):  
Travis J. Williams ◽  
Valeriy Cherepakhin
Keyword(s):  
Carboxylic Acids ◽  
Direct Synthesis ◽  
Primary Alcohol ◽  
Alcohol Oxidation ◽  
Atom Economy ◽  
Primary Alcohols ◽  
Direct Oxidation ◽  
Metal Compounds ◽  
New Methods ◽  
Active Research

AbstractOxidation of primary alcohols to carboxylic acids is a fundamental transformation in organic chemistry, yet despite its simplicity, extensive use, and relationship to pH, it remains a subject of active research for synthetic organic chemists. Since 2013, a great number of new methods have emerged that utilize transition-metal compounds as catalysts for acceptorless dehydrogenation of alcohols to carboxylates. The interest in this reaction is explained by its atom economy, which is in accord with the principles of sustainability and green chemistry. Therefore, the methods for the direct synthesis of carboxylic acids from alcohols is ripe for a modern survey, which we provide in this review.1 Introduction2 Thermodynamics of Primary Alcohol Oxidation3 Oxometalate Oxidation4 Transfer Dehydrogenation5 Acceptorless Dehydrogenation6 Electrochemical Methods7 Outlook

ChemInform Abstract: Direct Synthesis of Acyl Azides from Carboxylic Acids Using 2-Azido-1,3-dimethylimidazolinium Chloride.

ChemInform ◽  
2010 ◽  
Vol 41 (51) ◽  
pp. no-no
Author(s):  
Mitsuru Kitamura ◽  
Norifumi Tashiro ◽  
Yusuke Takamoto ◽  
Tatsuo Okauchi
Keyword(s):  
Carboxylic Acids ◽  
Direct Synthesis ◽  
Acyl Azides

Facile and direct synthesis of symmetrical acid anhydrides using a newly prepared powerful and efficient mixed reagent

2015 ◽  
Vol 69 (3) ◽  
Author(s):  
Hamed Rouhi-Saadabad ◽  
Batool Akhlaghinia
Keyword(s):  
Carboxylic Acids ◽  
Room Temperature ◽  
Low Cost ◽  
Direct Synthesis ◽  
Reaction Conditions ◽  
Experimental Procedure ◽  
Short Reaction Time ◽  
Acid Anhydrides ◽  
Work Up ◽  
Trichloroisocyanuric Acid

AbstractAn efficient mixed reagent for direct synthesis of symmetrical carboxylic anhydrides from carboxylic acids has been prepared. Carboxylic acids are converted to anhydrides using triphenylphosphine/ trichloroisocyanuric acid under mild reaction conditions at room temperature. Short reaction time, excellent yields of products, low cost, availability of reagents, simple experimental procedure, and easy work-up of the products are the main advantages of the presented method.

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