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Chemical Properties

ALMOST WHITE CRYSTALLINE POWDER

General Description

2-Chlorobenzamide is the major degradation product of CCU (1-(2-chlorobenzoyl)-3-(4-chlorophenyl) urea), a new insect growth regulator. It undergoes room temperature Pd-mediated hydrodehalogenations with KF and polymethylhydrosiloxane (PMHS) to yield benzamide. t undergoes reduction with NaBH4 in diglyme at 162°C to yield 2-chlorobenzonitrile.

InChI:InChI=1/C7H6ClNO/c8-6-4-2-1-3-5(6)7(9)10/h1-4H,(H2,9,10)

Upstream product

• 7335-25-3 ethyl 2-chlorobenzoate 
• 63417-79-8 2-chloro-benzimidic acid ethyl ester; hydrochloride 
• 89-98-5 2-chloro-benzaldehyde 
• 609-65-4 o-chlorobenzoyl chloride 
• 60-35-5 acetamide 
• 118-91-2 ortho-chlorobenzoic acid 
• 873-32-5 2-Chlorobenzonitrile 
• 3717-28-0 2-chloro benzaldehyde oxime 
• 186581-53-3 diazomethane 
• 24676-69-5 potassium 2,6-di-tert-butylphenolate 
• 57-13-6 urea 
• 15183-74-1 1-methoxy-4-((trifluoromethyl)sulfonyl)benzene 
• 201230-82-2 carbon monoxide 
• 432-86-0 1-(4-(trifluoromethylsulfonyl)phenyl)ethan-1-one 

Downstream Products

• 46004-52-8 2-chloro-benzimidic acid ethyl ester 
• 7504-29-2 1-(2-chlorophenyl)-2-(4-chlorophenyl)ethanone 
• 57338-87-1 2-chloro-benzoic acid-[bis-(2-cyano-ethyl)-amide] 
• 72867-72-2 1-(2-chlorophenyl)-2-phenyl-1-ethanone 
• 89974-71-0 2-chloro-benzimidic acid methyl ester 
• 3400-31-5 2-chloro-N-methylbenzamide 
• 873-32-5 2-Chlorobenzonitrile 
• 33348-81-1 2-chloro-benzoic acid bromoamide 
• 89-97-4 2-CHLOROBENZYLAMINE 
• 40478-06-6 2-chloro-N-(hydroxymethyl)benzamide 
• 92436-24-3 N,N'-methylenebis(2-chlorobenzamide) 
• 4461-34-1 2-chlorobenzoyl isocyanate 
• 51073-95-1 2,6-bis-(2-chloro-phenyl)-benzo[1,2-d;4,5-d']bisoxazole 
• 141178-00-9 5-Acetyl-3-benzyl-6-(2-chloro-phenyl)-1H-pyrimidine-2,4-dione 

Relevant academic research and scientific papers

Solid-phase synthesis of diaryl ketones through a three-component Stille coupling reaction

A three-component Stille coupling reaction on solid phase is described. Diaryl ketones bearing a wide variety of functional groups were prepared with polymer-bound organostannane and aryl halides in the presence of carbon monoxide.

Green and efficient Beckmann rearrangement by Cu(II) contained nano-silica triazine based dendrimer in water

In this research, a Cu(II) contained nano-silica triazine based dendrimer was prepared, characterized, and utilized as a retrievable catalytic system (Cu(II)-TrDen@nSiO2) for green formation of primary amides in water at room temperature. The structure of nanoparticles was fully characterized by using scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX), Fourier transform infrared spectroscopy (FT-IR), and thermogravimetry analysis (TGA). The results revealed that the nanoparticles have spherical morphology and an average size of around 40 nm. The analysis also illustrated that the copper nanoparticles had been successfully loaded on the nitrogen-rich dendritic structure with a uniform distribution. The inductively coupled plasma analysis showed that about 0.67 mmol/g of Cu was loaded on the Cu(II)-TrDen@nSiO2 support. Mild reaction conditions, excellent yields, environment-friendly synthesis, and easily prepared starting materials are the key features of the present method. The catalyst is easily removed from the reaction media using a simple filtration and can be re-used at least five times without any considerable loss of its catalytic activity.

Visible light-mediated synthesis of amides from carboxylic acids and amine-boranes

Here, a photocatalytic deoxygenative amidation protocol using readily available amine-boranes and carboxylic acids is described. This approach features mild conditions, moderate-to-good yields, easy scale-up, and up to 62 examples of functionalized amides with diverse substituents. The synthetic robustness of this method was also demonstrated by its application in the late-stage functionalization of several pharmaceutical molecules.

Cu(II)-promoted oxidative C-N bond cleavage of N-benzoylamino acids to primary aryl amides

A novel protocol for CuCl2-promoted oxidative C-N bond cleavage of N-benzoyl amino acids was developed. It is the first example of using accessible amino acid as an ammonia synthetic equivalent for the synthesis of primary aryl amides via CuCl2-promoted oxidative C-N bond cleavage reaction. The present protocol shows excellent functional group tolerance and provides an alternative method for the synthetic of primary aryl amides in 84-96% yields.

Nano-construction of CuO nanorods decorated with g-C3N4 nanosheets (CuO/g-C3N4-NS) as a superb colloidal nanocatalyst for liquid phase C[sbnd]H conversion of aldehydes to amides

Herein, we describe an intelligent strategy to fabricate nanosheets of graphitic carbon nitride (g-C3N4) decorated with nanorods copper oxide (CuO NRs). Then, the catalytic activity of CuONRs/g-C3N4-NS was developed for the synthesis of primary amides in water. The morphology of CuO and its synergetics effect with nanosheets g-C3N4 a major role in the yield of products. Furthermore, hydroxylamine hydrochloride (NH2OH·HCl) due to availability and affordability was used as a suitable substitute for ammonia source. The findings demonstrate that this layer nanostructure is a superb catalyst for converting various derivatives of aldehyde to their corresponding amides. The current protocol can be useful criterion in the synthesis and stabilization of metal oxides and provides new insight in organic transformation.

Cu(II)–metformin immobilized on graphene oxide: an efficient and recyclable catalyst for the Beckmann rearrangement

Abstract: In this study, for the first time, the copper(II) nanoparticles (NPs) have been immobilized on metformin-functionalized graphene oxide and then its catalytic applications have been investigated in synthesis of amides from aldoximes (Beckmann rearrangement). The chemical structure of prepared catalyst has been characterized by various analyses like FT-IR, TGA, TEM, SEM, EDX, and ICP. All analyses confirm the successful and stable immobilization of copper NPs on functionalized graphene oxide. This synthesized heterogeneous nanocatalyst showed excellent catalytic activity with high product yields and short reaction times. Also, the suggested catalyst could be recycled ten times without a drastic decrease in its catalytic activity. Graphic abstract: [Figure not available: see fulltext.].

Arene-ruthenium(II)-phosphine complexes: Green catalysts for hydration of nitriles under mild conditions

Three new arene-ruthenium(II) complexes were prepared by treating [{RuCl(μ-Cl)(η6-arene)}2] (η6-arene = p-cymene) dimer with tri(2-furyl)phosphine (PFu3) and 1,3,5-triaza-7-phosphaadamantane (PTA), respectively to obtain [RuCl2(η6-arene)PFu3] [Ru]-1, [RuCl(η6-arene)(PFu3)(PTA)]BF4 [Ru]-2 and [RuCl(η6-arene)(PFu3)2]BF4 [Ru]-3. All the complexes were structurally identified using analytical and spectroscopic methods including single-crystal X-ray studies. The effectiveness of resulting complexes as potential homogeneous catalysts for selective hydration of different nitriles into corresponding amides in aqueous medium and air atmosphere was explored. There was a remarkable difference in catalytic activity of the catalysts depending on the nature and number of phosphorus-donor ligands and sites available for catalysis. Experimental studies performed using structural analogues of efficient catalyst concluded a structural-activity relationship for the higher catalytic activity of [Ru]-1, being able to convert huge variety of aromatic, heteroaromatic and aliphatic nitriles. The use of eco-friendly water as a solvent, open atmosphere and avoidance of any organic solvent during the catalytic reactions prove the reported process to be truly green and sustainable.

Half-Sandwich Iridium Complexes for the One-Pot Synthesis of Amides: Preparation, Structure, and Diverse Catalytic Activity

Several types of air-stable N,O-coordinate half-sandwich iridium complexes containing Schiff base ligands with the general formula [Cp*IrClL] were synthesized in good yields. These stable iridium complexes displayed a good catalytic efficiency in amide synthesis. A variety of amides with different substituents were obtained in a one-pot procedure with excellent yields and high selectivities through the amidation of aldehydes with NH2OHHCl and nitrile hydration under the catalysis of complexes 1-4. The excellent and diverse catalytic activity, mild conditions, broad substance scope, and environmentally friendly solvent make this system potentially applicable in industrial production. Half-sandwich iridium complexes 1-4 were characterized by NMR, elemental analysis, and IR techniques. Molecular structures of complexes 2 and 3 were confirmed by single-crystal X-ray analysis.

Preparation method of aromatic amide compound

The present invention provides a preparation method of an aromatic amide compound. In an organic solvent, under the effect of a catalyst, an aromatic acid compound and an amine source are subjected toa dehydration reaction to obtain the aromatic amide compound, wherein the aromatic acid compound is an aromatic acid, a substituted aromatic acid, a heterocyclic aromatic acid or a substituted heterocyclic aromatic acid; and the substituent group of amide is any substituent group of H, a C1-C8 straight-chain alkyl or branched-chain alkyl group, a benzene ring or an aromatic ring. The aromatic amide compound is an important chemical intermediate, and the synthesis method is mild in reaction condition and high in yield.

Design, synthesis, and bioactivities of novel pyridazinone derivatives containing 2-phenylthiazole or oxazole skeletons

A series of novel pyridazinone derivatives were designed and synthesized by replacing 4-(tert-butyl)phenyl moiety of pyridaben with 2-phenylthiazole or oxazole fragments via activity substructure connecting approach. The structures of all target compounds were characterized through NMR, MS, and elemental analysis. Bioassay results exhibit that most compounds showed potent bioactivities against Aphis fabae, Tetranychus urticae, Erysiphe graminis, and/or Puccinia polysora. Among the newly synthesized compounds, 2-(tert-butyl)-4-chloro-5-(((2-phenylthiazol-4-yl)methyl)thio)pyridazin-3(2H)-one (12b) displays remarkable insecticidal activity against A fabae. Its LC50 value (2.73 mg/L) is better than that of pyridaben (5.46 mg/L), although inferior to that of imidacloprid (0.51 mg/L). In addition to its extraordinary insecticidal activity, compound 12b also exerts 96.9% fungicidal activities against P polysora at 500 mg/L in vivo, significantly superior to that of pyridaben (50.0%), while slightly lower than that of tebuconazole (100%). This article discusses the synthesis, bioassay results, and structure-activity relationship of this series of novel pyridazinone derivatives.