3245-27-0

Upstream product

• 201230-82-2 carbon monoxide 
• 40739-81-9 p-tolualdehyde p-toluenesulfonylhydrazone 
• 62-53-3 aniline 
• 40154-39-0 p-tolualdehyde tosylhydrazone Na salt 
• 35675-44-6 4-methylphenylacetyl chloride 
• 33155-60-1 t-butyl p-tolylacetate 
• 14062-19-2 p-tolylacetic acid ethyl ester 
• 101089-42-3 4'-methyl-deoxybenzoin-(E)-oxime 
• 33984-93-9 cis-2,3-epoxy-3-(p-methylphenyl)propanenitrile 
• 1053657-08-1 4-methylthiophenylacetic acid 
• 98-95-3 nitrobenzene 
• 104-87-0 4-methyl-benzaldehyde 
• 4052-88-4 4-methyl-N,N-dimethylbenzylamine 
• 3422-01-3 tert-butyl phenylcarbamate 

Downstream Products

• 85274-00-6 2-chloro-3-(4-methylphenyl)quinoline 
• 110487-14-4 2-(2-dimethylaminoethylthio)-3-p-tolylquinoline 

Relevant academic research and scientific papers

An efficient protocol for the preparation of amides by copper-catalyzed reactions between nitriles and amines in water

The reactions between nitriles and amines catalyzed by Cu(OAc)2 and 2-piperidinecarboxylic acid were carried out in pure water without any other additives. A variety of substituted amides can be obtained in moderate to good yields up to 90%.

PCl3-mediated transesterification and aminolysis of tert-butyl esters via acid chloride formation

A PCl3-mediated conversion of tert-butyl esters into esters and amides in one-pot under air is developed. This novel protocol is highlighted by the synthesis of skeletons of bioactive molecules and gram-scale reactions. Mechanistic studies revealed that this transformation involves the formation of an acid chloride in situ, which is followed by reactions with alcohols or amines to afford the desired products.

Chromium-catalyzed ligand-free amidation of esters with anilines

Amides are important structural motifs in pharmaceutical and agrochemical chemistry because of the intriguing biological active properties. We report here the amidation of commercially available esters with anilines that was promoted by low-cost and air-stable chromium(III) pre-catalyst combined with magnesium, providing access to amides. This reaction occurs without the use of external ligands in a simple operation. Mechanistic studies indicate that a reactive aminated Cr species responsible for the amidation can be considered, which may be formed by reaction of low-valent Cr with aniline followed by reduction with hydrogen evolution.

BF3·OEt2-promoted tandem Meinwald rearrangement and nucleophilic substitution of oxiranecarbonitriles

Tandem Meinwald rearrangement and nucleophilic substitution of oxiranenitriles was realized. Arylacetic acid derivatives were readily synthesized from 3-aryloxirane-2-carbonitriles with amines, alcohols, or water in the presence of boron trifluoride under microwave irradiation, and the designed synthetic strategy includes introducing a cyano leaving group into arylepoxides and capturing the in situ generated toxic cyanide with boron trifluoride, making the reaction efficient, safe, and environmentally benign. The reaction occurs through an acid-promoted Meinwald rearrangement, producing arylacetyl cyanides, followed by an addition-elimination process with nitrogen or oxygen-containing nucleophilic amines, alcohols or water. The current method provides a new application of the tandem Meinwald rearrangement.

An Electrochemical Beckmann Rearrangement: Traditional Reaction via Modern Radical Mechanism

Abstract: Electrosynthesis as a potential means of introducing heteroatoms into the carbon framework is rarely studied. Herein, the electrochemical Beckmann rearrangement, i. e. the direct electrolysis of ketoximes to amides, is presented for the first time. Using a constant current as the driving force, the reaction can be easily carried out under neutral conditions at room temperature. Based on a series of mechanistic studies, a novel radical Beckmann rearrangement mechanism is proposed. This electrochemical Beckmann rearrangement does not follow the trans-migration rule of the classical Beckmann rearrangement.

Visible-light-induced Beckmann rearrangement by organic photoredox catalysis

A facile and general strategy for efficient direct conversion of oximes to amides using an inexpensive organic photocatalyst and visible light is described. This radical Beckmann rearrangement can be performed under mild conditions. Various alkyl aryl ketoximes and diaryl ketoximes can be effectively converted into the corresponding amides in excellent yields.

Visible Light-Induced Amide Bond Formation

A metal-, base-, and additive-free amide bond formation reaction was developed under an organic photoredox catalyst. This green approach showed excellent functional selectivity without affecting other functional groups such as alcohols, phenols, ethers, esters, halogens, or heterocycles. This method featured a broad substrate scope, good compatibility with water and air, and high yields (≤95%). The potential utilities were demonstrated by the synthesis of important drug molecules such as paracetamol, melatonin, moclobemide, and acetazolamide.

Method for preparing amide by visible light-induced metal-free participation (by machine translation)

The method for preparing the amide in the, preparation method of the novel amide disclosed by the invention has the advantages that, the reaction: conditions are mild, the 9 - reaction conditions are mild, and the yield 71%. of the reaction conditions is not lower than the reaction conditions . (by machine translation)

Chromium-Catalyzed Activation of Acyl C-O Bonds with Magnesium for Amidation of Esters with Nitroarenes

Here, we report a chromium-catalyzed activation of acyl C-O bonds with magnesium for amidation of esters with nitroarenes. Low-cost chromium(III) chloride shows high reactivity in promoting amidation by using magnesium as reductant and chlorotrimethylsilane as additive. It provides a step-economic strategy to the synthesis of centrally important amide motifs using inexpensive and air-stable nitroarenes as amino sources.

Palladium-catalyzed carbonylation of benzylic ammonium salts to amides and esters: Via C-N bond activation

An efficient palladium-catalyzed carbonylation reaction of readily available quaternary ammonium salts with CO is reported for the first time to afford arylacetamides and arylacetic acid esters via benzylic C-N bond cleavage. This protocol features mild reaction conditions under atmospheric pressure of CO, a redox-neutral process without an additional oxidant, and a broad substrate scope for various kinds of amines, alcohols and phenols.