Author: Jessica.F

Dutta, Apurba published the artcileBase promoted metal-free approach towards synthesis of quinazolin-4(3H)-ones and 2,3-dihydroquinazolin-4(1H)-ones under microwave irradiation, Quality Control of 1885-29-6, the main research area is quinazolinone dihydroquinazolinone preparation microwave irradiation green chem.

A metal, solvent and oxidant free approach has been developed for the synthesis of quinazolin-4(3H)-ones in a concise and convergent fashion under microwave irradiation Using the same metal free catalyst 2,3-dihydroquinazolin-4(1H)-ones were also synthesized in water as green and sustainable solvent. Starting from 2-aminobenzonitriles and carbonyls, the desired products were isolated in good to excellent yields. These protocols provided a simplistic and an expeditious approach for the assembly of diverse structural quinazolinones.

Sustainable Chemistry and Pharmacy published new progress about Benzaldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 1885-29-6 belongs to class nitriles-buliding-blocks, name is 2-Aminobenzonitrile(Flakes or Chunks), and the molecular formula is C7H6N2, Quality Control of 1885-29-6.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Pezzetta, Cristofer published the artcileEnantioselective Synthesis of N-Benzylic Heterocycles: A Nickel and Photoredox Dual Catalysis Approach, Computed Properties of 100-70-9, the main research area is benzylic heterocycle preparation enantioselective; heterocyclic carboxylic acid aryl bromide decarboxylative cross coupling; nickel photoredox dual catalysis.

Reported herein is a dual nickel- and photoredox-catalyzed modular approach for the preparation of enantioenriched N-benzylic heterocycles. α-Heterocyclic carboxylic acids, easily obtainable from common com. material, are reported as suitable substrates for a decarboxylative strategy in conjunction with a chiral pyridine-oxazoline (PyOx) ligand, providing quick access to enantioenriched drug-like products. The presence of a directing group on the heterocyclic moiety is shown to be beneficial, affording improved stereoselectivity in a number of cases.

Organic Letters published new progress about Aryl bromides Role: RCT (Reactant), RACT (Reactant or Reagent). 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, Computed Properties of 100-70-9.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Zhao, Huantian published the artcileSynthesis of 1H-Indazoles and Quinazolines Using Additive Intermediates of Grignard Reagents to 2-Amino Benzonitriles, Category: nitriles-buliding-blocks, the main research area is aminobenzonitrile bromide iron chloride catalyst one pot heterocyclization; indazole preparation; bromide aminobenzonitrile ester bismuth chloride catalyst one pot heterocyclization; quinazoline preparation.

A convenient and efficient approach to 1H-indazoles in one-pot under air atm., using additive intermediates of Grignard reagents to 2-aminobenzonitriles via a FeCl3/Bpy catalyzed N-N coupling was developed. Besides, such intermediates could reacted with esters in one-pot to yield quinazolines promoted by BiCl3/Ph3P. Both 1H-indazoles and quinazolines were prepared in good to excellent yields. The possible mechanisms for the formation of 1H-indazoles and quinazolines were proposed.

ChemistrySelect published new progress about Aryl bromides Role: RCT (Reactant), RACT (Reactant or Reagent). 1885-29-6 belongs to class nitriles-buliding-blocks, name is 2-Aminobenzonitrile(Flakes or Chunks), and the molecular formula is C7H6N2, Category: nitriles-buliding-blocks.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Shi, Xinzhe published the artcileReaction Conditions for the Regiodivergent Direct Arylations at C2- or C5-Positions of Oxazoles using Phosphine-Free Palladium Catalysts, Quality Control of 87150-13-8, the main research area is arylated oxazole regioselective preparation; oxazole aryl bromide arylation palladium catalyst.

Two sets of reaction conditions for the regiodivergent C2- or C5- direct arylations of oxazole were reported. In both cases, phosphine-free catalysts and inexpensive bases were employed allowing the access to the arylated oxazoles I [R = H, 4-ClC6H4, 1-naphthyl, etc.; R1 = H, 4-O2NC6H4, 4-pyridyl, etc.] in moderate to high yields. Using Pd(OAc)2/KOAc as catalyst and base, regioselective C5-arylations were observed; whereas, using Pd(acac)2/Cs2CO3 system, the arylation occurred at the C2-position of oxazole. The higher reactivity of C5-H bond of oxazole as compared to the C2-H bond in the presence of Pd(OAc)2/KOAc system was consistent with a concerted metalation deprotonation mechanism; whereas the C2-arylation likely occurred via a simple base deprotonation of the oxazole C2-position. Then, from these C2- or C5-arylated oxazoles, a second palladium-catalyzed direct C-H bond arylation afforded 2,5-diaryloxazoles with two different aryl groups. Also applied these sequential arylations to the straightforward synthesis of 2-arylphenanthro[9,10-d]oxazoles via three C-H bond functionalization steps. The Ru-catalyzed C-H arylation of the aryl unit of 2-aryloxazoles was also described.

Advanced Synthesis & Catalysis published new progress about Aryl bromides Role: RCT (Reactant), RACT (Reactant or Reagent). 87150-13-8 belongs to class nitriles-buliding-blocks, name is 4-(5-Oxazolyl)benzonitrile, and the molecular formula is C10H6N2O, Quality Control of 87150-13-8.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Sudharsan, Murugesan published the artcilePalladium Nanoparticles Incorporated Thiazoline Functionalized Periodic Mesoporous Organosilica: Efficient Catalyst for Selective Hydrogenation & Csp2-Csp2 Bond Formation Reactions, Category: nitriles-buliding-blocks, the main research area is palladium thiazoline nanocatalyst preparation hydrogenation bond formation reaction.

Thiazoline functionalized periodic mesoporous organosilica (TPMO) supported palladium nanoparticles (Pd-TPMO) were fabricated through a co-condensation approach and successive incorporation of palladium nanoparticles using a double-solvent technique. The TPMO and Pd-TPMO were characterized through 29Si MAS NMR, FTIR, SAXS, XPS, FESEM, TEM and N2 adsorption-desorption, which revealed the morphol. and physicochem. properties of the materials. The catalytic performance of Pd-TPMO was evaluated for hydrogenation of industrially important compounds such as styrene epoxide, furfural, nitrobenzene and Csp2-Csp2 bond-formation reactions. The Pd-TPMO mediated catalytic reactions were found to be effective in producing the corresponding products such as 2-phenylethanol, furfuryl alc., aniline with excellent yields and selectivity. The size and stability of palladium nanoparticles within the confined organosilica framework promotes excellent activity and recyclability of the catalyst without a significant loss in the yields for hydrogenation and Csp2-Csp2 bond-formation reactions.

ChemistrySelect published new progress about Aryl bromides Role: RCT (Reactant), RACT (Reactant or Reagent). 1885-29-6 belongs to class nitriles-buliding-blocks, name is 2-Aminobenzonitrile(Flakes or Chunks), and the molecular formula is C7H6N2, Category: nitriles-buliding-blocks.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Saikia, Rakhee published the artcileRevisiting the synthesis of aryl nitriles: a pivotal role of CAN, Formula: C7H6N2, the main research area is nitrile aryl preparation; aryl iodide or bromide CAN cyanation catalyst copper trifluoromethanesulfonate.

Facilitated by the dual role of ceric ammonium nitrate (CAN), herein a cost-effective approach for the cyanation of aryl iodides/bromides with CAN-DMF as an addition to the existing pool of combined cyanation sources was reported. In addition to being an oxidant, CAN acted as a source of nitrogen in our protocol. The reaction was catalyzed by a readily available Cu(II) salt and the ability of CAN to generate ammonia in the reaction medium was utilized to eliminate the addnl. requirement of a nitrogen source, ligand, additive or toxic reagents. The mechanistic study suggested an evolution of CN- leading to the synthesis of a variety of aryl nitriles ArCN [Ar = Ph, 4-OHC6H4, 4-H2NC6H4, etc.] in moderate to good yields. The proposed mechanism was supported by a series of control reactions and labeling experiments

Organic & Biomolecular Chemistry published new progress about Aryl bromides Role: RCT (Reactant), RACT (Reactant or Reagent). 1885-29-6 belongs to class nitriles-buliding-blocks, name is 2-Aminobenzonitrile(Flakes or Chunks), and the molecular formula is C7H6N2, Formula: C7H6N2.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Primas, Nicolas published the artcileSynthesis of 2-TIPS-oxazol-5-ylboronic acid pinacol ester: efficient route to 5-(het)aryloxazoles via Suzuki cross-coupling reaction, Formula: C10H6N2O, the main research area is silyloxazolylboronic pinacol ester preparation Suzuki coupling reaction aryl halide; oxazole aryl heteroaryl preparation.

A facile synthetic route to the new 2-TIPS-oxazol-5-ylboronic acid pinacol ester was described herein. Its reactivity toward Suzuki cross-coupling reaction was studied to provide various 5-(het)aryloxazoles. E.g., Suzuki cross-coupling reaction of 2-TIPS-oxazol-5-ylboronic acid pinacol ester I with 4-MeOC6H4I gave 79% 5-aryloxazole II. A wide range of functions on the aryl moiety are tolerated.

Tetrahedron published new progress about Aryl bromides Role: RCT (Reactant), RACT (Reactant or Reagent). 87150-13-8 belongs to class nitriles-buliding-blocks, name is 4-(5-Oxazolyl)benzonitrile, and the molecular formula is C10H6N2O, Formula: C10H6N2O.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Hao, Xiaowei published the artcileAir-stable and highly efficient indenyl-derived phosphine ligand: Application to Buchwald-Hartwig amination reactions, Product Details of C11H12N2O, the main research area is palladium complex mesitylindenyldicyclohexylphosphine preparation catalyst Buchwald Hartwig amination; aryl halide Buchwald Hartwig amination palladium catalyst.

2-Mesitylindenyl phosphine ligand (I) and [(2-mesitylindenyl)dicyclohexylphosphine]PdCl2 (II) have been synthesized and fully characterized by NMR and elemental anal., as well as by X-ray crystallog. for II. A Highly active catalyst system derived from a palladium precatalyst and bulky 2-mesitylindenyl phosphine ligand (I) for the Buchwald-Hartwig amination reaction of aryl halides with primary and secondary amines has been developed. This method allows for the preparation of a wide variety of amines in moderate to excellent yields and displays a high level of activity for the coupling of aryl chlorides as well as hindered aryl bromides.

Journal of Organometallic Chemistry published new progress about Aryl bromides Role: RCT (Reactant), RACT (Reactant or Reagent). 204078-32-0 belongs to class nitriles-buliding-blocks, name is 2-Morpholinobenzonitrile, and the molecular formula is C11H12N2O, Product Details of C11H12N2O.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Bilgicli, Hayriye Genc published the artcileComposites of palladium nanoparticles and graphene oxide as a highly active and reusable catalyst for the hydrogenation of nitroarenes, Name: 2-Aminobenzonitrile(Flakes or Chunks), the main research area is graphene oxide supported palladium nanoparticle preparation surface structure; nitrobenzene supported palladium nanocatalyst transfer hydrogenation green chem; aniline preparation.

The composite of palladium nanoparticles and graphene oxide (CPG) was synthesized by a facile and very efficient method that provided chem. selectivity and high catalytic activity. The synthesized CPG was characterized by several techniques such as transmission and high-resolution electron microscopy (TEM and HR-TEM), X-ray diffraction (XRD), Raman spectroscopy and Photoelectron spectroscopy (XPS). CPG was tested for selective reduction of nitroarenes at room temperature After the addition of CPG to the reaction media, catalytic performances were depended upon the cooperative effect of hydrogen activation with Pd nanoparticles, where the lack of electrons favors an excellent performance. Nitroarenes can be bound to the energetically preferred adsorption site for the nitro group in elec. enriched graphene oxide. In addition, the Pd nanoparticles transfer electrons to the graphene oxide which increased the functions of metal and carbon support. CPG exhibited both chemoprotective and high catalytic performance for hydrogenation of nitroarenes at room temperature Aniline derivatives were obtained with high yields under mild conditions and a practical catalytic system was developed by the use of CPG.

Microporous and Mesoporous Materials published new progress about Anilines Role: SPN (Synthetic Preparation), PREP (Preparation). 1885-29-6 belongs to class nitriles-buliding-blocks, name is 2-Aminobenzonitrile(Flakes or Chunks), and the molecular formula is C7H6N2, Name: 2-Aminobenzonitrile(Flakes or Chunks).

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Meesa, Siddi Ramulu published the artcileCatalyst and solvent switched divergent C-H functionalization: oxidative annulation of N-aryl substituted quinazolin-4-amine with alkynes, SDS of cas: 1885-29-6, the main research area is indolequinazoline pyridoquinazoline preparation regio chemoselective; aryl quinazolinamine internal alkyne oxidative annulation.

The development of site-selective C-H functionalizations/annulations is one of the most challenging practices in synthetic organic chem. particularly for substrates bearing several similarly reactive C-H bonds. Herein, authors describe catalyst and solvent controlled ortho/peri site-selective oxidative annulation of C-H bonds of N-aryl substituted quinazolin-4-amines with internal alkynes. The ortho C-H selective annulation was observed using Pd-catalyst in DMF to give indole-quinazoline derivatives I (R1 = H, 7-Cl, 6,7-di-OMe; R2 = H, 4-Me, 4-OMe, 4-Cl,etc.; R3 = R4 = Ph, 4-MeC6H4, 2-thienyl, etc.), while, Ru-catalyst in PEG-400 favored the peri C-H bond annulation exclusively to furnish pyrido-quinazoline derivs II.

Organic & Biomolecular Chemistry published new progress about Alkynes, aryl Role: RCT (Reactant), RACT (Reactant or Reagent). 1885-29-6 belongs to class nitriles-buliding-blocks, name is 2-Aminobenzonitrile(Flakes or Chunks), and the molecular formula is C7H6N2, SDS of cas: 1885-29-6.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts