Month: November 2022

Kori, Santosh published the artcileRoom temperature HFIP/Ag-promoted palladium-catalyzed C-H functionalization of benzothiazole with iodoarenes, HPLC of Formula: 151-10-0, the main research area is aryl benzothiazole preparation; benzothiazole iodoarene arylation palladium catalyst.

A versatile synthetic protocol involving the room temperature direct arylation of benzothiazoles I (R = H, Me, Cl, F) with a wide variety of iodoarenes R1I (R1 = C6H5, 4-ClC6H4, 2-naphthyl, etc.) under Ag-promoted Pd-catalyzed conditions in HFIP as the reaction solvent has been presented. A sequential HFIP-promoted selective iodination of arenes followed by Pd-catalyzed direct arylation of benzothiazoles I has also been disclosed. The utility of the developed protocol has been demonstrated by the synthesis of anti-tumor agents II, PMX-610 and CJM-126 (precursor).

Chemical Communications (Cambridge, United Kingdom) published new progress about Aryl iodides Role: RCT (Reactant), RACT (Reactant or Reagent). 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, HPLC of Formula: 151-10-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Lamola, Jairus L. published the artcileEvaluation of P-bridged biaryl phosphine ligands in palladium-catalyzed Suzuki-Miyaura cross-coupling reactions, Product Details of C8H10O2, the main research area is phosphacyclic ligand preparation; biaryl preparation; aryl halide phenylboronic acid Suzuki Miyaura coupling palladium catalyst.

A family of biaryl phosphacyclic ligands derived from phobane and phosphatrioxa-adamantane frameworks was described. The rigid biaryl phosphacycles were efficient for synthesis of biaryls ArAr1 [Ar = 3-MeC6H4, 2-naphthyl, 2-thienyl, etc.; Ar1 = Ph, 2-MeC6H4, 2,6-di-MeC6H3] via palladium-catalyzed Suzuki-Miyaura cross-coupling of aryl bromides/chlorides with phenylboronic acids. In particular, coupling reactions of the challenging sterically hindered and heterocyclic substrates were viable at room temperature

RSC Advances published new progress about Aryl halides Role: RCT (Reactant), RACT (Reactant or Reagent). 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Product Details of C8H10O2.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Ke, Jie published the artcileHydrodehalogenation of Aryl Halides through Direct Electrolysis, Related Products of isoquinoline, the main research area is aryl halide electrolysis hydrodehalogenation trialkylamine catalyst free; benzene preparation; electrochemistry; hydrodehalogenation; metal-free synthesis; organic halides; trialkylamines.

A catalyst- and metal-free electrochem. hydrodehalogenation of aryl halides is disclosed. Our reaction by a flexible protocol is operated in an undivided cell equipped with an inexpensive graphite rod anode and cathode. Trialkylamines nBu3N/Et3N behave as effective reductants and hydrogen atom donors for this electrochem. reductive reaction. Various aryl and heteroaryl bromides worked effectively. The typically less reactive aryl chlorides and fluorides can also be smoothly converted. The utility of our method is demonstrated by detoxification of harmful pesticides and hydrodebromination of a dibrominated biphenyl (analogs of flame-retardants) in gram scale.

Chemistry – A European Journal published new progress about Aryl halides Role: RCT (Reactant), RACT (Reactant or Reagent). 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Related Products of isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Mouries, Virginie published the artcileRadical β-elimination of a sulfinyl group to afford allenes, Safety of 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, the main research area is allene preparation; sulfoxide vinyl radical beta elimination.

An unprecedented radical β-elimination of vinyl sulfoxides, e.g. I (R = PhSO), obtained in two steps from the corresponding aldehydes or ketones and Ph vinyl sulfoxide, opened a new route to functionalized allenes, e.g. II. The radical translocation stratagem could also be used to trigger the β-elimination of the sulfinyl radical. Studies on the effect of the nature of the sulfur group on a common precursor showed that vinyl sulfimide I (R = PhSNTs) reacts similarly to vinyl sulfoxide I (R = PhSO), whereas vinyl sulfide I (R = PhS), vinyl sulfone I (R = PhSO2), and vinylsulfinyl imine I (R = PhSONTs) gave no allene II.

European Journal of Organic Chemistry published new progress about Allenes Role: SPN (Synthetic Preparation), PREP (Preparation). 1205-17-0 belongs to class isoquinoline, name is 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, and the molecular formula is C11H12O3, Safety of 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Vaganov, Vladimir Yu. published the artcileOptimization of Catalyst Structure for Asymmetric Propargylation of Aldehydes with Allenyltrichlorosilane, Product Details of C9H10O3, the main research area is atropisomeric bipyridine dioxide preparation; aryl aldehyde allenyltrichlorosilane bipyridine dioxide catalyst enantioselective propargylation; arylpropargylic alc preparation.

In this work a set of atropisomeric bipyridine N,N’-dioxides was tested as Lewis base catalysts for the asym. propargylation of aldehydes with trichloroallenylsilane. The catalysts were easily prepared in four simple steps starting from readily available Me ketones. Aryl-substituted derivatives proved to be highly active and showed a high level of enantiocontrol even at 1 mol% loading. The reaction scope includes a wide range of aromatic, heteroaromatic, and unsaturated aldehydes. New computations confirm that the key stereodetermining transition state structures for the synthesized catalysts are similar to those previously reported for the model structure.

Advanced Synthesis & Catalysis published new progress about Alkynes Role: SPN (Synthetic Preparation), PREP (Preparation). 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, Product Details of C9H10O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Abed Ali Abdine, Racha published the artcileHydroarylation of N-Allenyl Derivatives Catalyzed by Copper, Application of 1,3-Dimethoxybenzene, the main research area is allene arene copper hydroarylation catalyst; allyl arene stereoselective preparation.

An additive-free copper catalytic system was used to perform the addition of (hetero)aryl nucleophiles to N-allenyl derivatives This intermol. C-C bond formation occurs with both complete regio- and stereoselectivity to afford the linear (E) allylic product with moderate to excellent yields. This atom economical method is the first example of hydroarylation of allenes catalyzed by copper.

European Journal of Organic Chemistry published new progress about Alkenes Role: SPN (Synthetic Preparation), PREP (Preparation). 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Application of 1,3-Dimethoxybenzene.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Yang, Tao published the artcileChemoselective Union of Olefins, Organohalides, and Redox-Active Esters Enables Regioselective Alkene Dialkylation, HPLC of Formula: 104-01-8, the main research area is alkenyl amide ester haloalkane nickel chemoselective regioselective dialkylation; amide dialkyl preparation.

Multicomponent catalytic processes that can generate multiple C(sp3)-C(sp3) bonds in a single step under mild conditions, particularly those that employ inexpensive catalysts and substrates, are highly sought-after in chem. research for complex mol. synthesis. Here, we disclose an efficient Ni-catalyzed reductive protocol that chemoselectively merges alkenyl amides with two different aliphatic electrophiles. Starting materials are readily accessible from stable and abundant feedstock, and products are furnished in up to >98:2 regioisomeric ratios. The present strategy eliminates the use of sensitive organometallic reagents, tolerates a wide array of complex functionalities, and enables regiodivergent addition of two primary alkyl groups bearing similar electronic and steric attributes across aliphatic C=C bonds with exquisite control of site selectivity. Utility is underscored by the concise synthesis of bioactive compounds and postreaction functionalizations leading to structurally diverse scaffolds. DFT studies revealed that the regiochem. outcome originates from the orthogonal reactivity and chemoselectivity profiles of in situ generated organonickel species.

Journal of the American Chemical Society published new progress about Alkanes Role: SPN (Synthetic Preparation), PREP (Preparation). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, HPLC of Formula: 104-01-8.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Zhu, Qilei published the artcilePhotocatalytic Hydromethylation and Hydroalkylation of Olefins Enabled by Titanium Dioxide Mediated Decarboxylation, Quality Control of 104-01-8, the main research area is carboxylic acid alkene titanium dioxide light photocatalytic hydroalkylation decarboxylation; alkane preparation.

A versatile method for the hydromethylation and hydroalkylation of alkenes at room temperature is achieved by using the photooxidative redox capacity of the valence band of anatase titanium dioxide (TiO2). Mechanistic studies support a radical-based mechanism involving the photoexcitation of TiO2 with 390 nm light in the presence of acetic acid and other carboxylic acids to generate Me and alkyl radicals, resp., without the need for stoichiometric base. This protocol is accepting of a broad scope of alkene and carboxylic acids, including challenging ones that produce highly reactive primary alkyl radicals and those containing functional groups that are susceptible to nucleophilic substitution such as alkyl halides. This methodol. highlights the utility of using heterogeneous semiconductor photocatalysts such as TiO2 for promoting challenging organic syntheses that rely on highly reactive intermediates.

Journal of the American Chemical Society published new progress about Alkanes Role: SPN (Synthetic Preparation), PREP (Preparation). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Quality Control of 104-01-8.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Shon, Jong-Hwa published the artcilePhotoredox catalysis on unactivated substrates with strongly reducing iridium photosensitizers, COA of Formula: C8H10O2, the main research area is aryl halide alkyl hydrodehalogenation iridium photocatalyst.

In this work, the strong bis-cyclometalated iridium photoreductants with electron-rich β-diketiminate (NacNac) ancillary ligands enable high-yielding photoredox transformations of challenging substrates with very simple reaction conditions that require only a single sacrificial reagent. Using blue or green visible-light activation a variety of reactions, which include hydrodehalogenation, cyclization, intramol. radical addition, and prenylation via radical-mediated pathways, with optimized conditions that only require the photocatalyst and a sacrificial reductant/hydrogen atom donor were demonstrated. Many of these reactions involve organobromide and organochloride substrates RX (R = 3-methoxyphenyl, 4-cyanophenyl, {1-[(benzyloxy)carbonyl]piperidin-4-yl}, etc.; X = Br, Cl) which in the past have had limited utility in photoredox catalysis. This work paves the way for the continued expansion of the substrate scope in photoredox catalysis.

Chemical Science published new progress about Alkanes Role: SPN (Synthetic Preparation), PREP (Preparation). 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, COA of Formula: C8H10O2.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

McLaughlin, Calum published the artcileCatalytic enantioselective synthesis of 1,4-dihydropyridines via the addition of C(1)-ammonium enolates to pyridinium salts, Name: 4-Methoxyphenylacetic acid, the main research area is aromatic ester pyridinium salt isothiourea catalyst dearomatization; dihydropyridine enantioselective regioselective preparation.

The regio- and stereoselective addition of C(1)-ammonium enolates – generated in situ from aryl esters and the isothiourea catalyst (R)-BTM – to pyridinium salts bearing an electron withdrawing substituent in the 3-position allowed the synthesis of a range of enantioenriched 1,4-dihydropyridines. This represented the first organocatalytic approach to pyridine dearomatization using pronucleophiles at the carboxylic acid oxidation level. Optimization studies revealed a significant solvent dependency upon product enantioselectivity, with only toluene providing significant asym. induction. Using DABCO as a base also proved beneficial for product enantioselectivity, while investigations into the nature of the counterion showed that co-ordinating bromide or chloride substrates led to higher product er than the corresponding tetrafluoroborate or hexafluorophosphate. The scope and limitations of this process were developed, with enantioselective addition to 3-cyano- or 3-sulfonylpyridinium salts giving the corresponding 1,4-dihydropyridines (15 examples, up to 95 : 5 dr and 98 : 2 er).

Chemical Science published new progress about Addition reaction catalysts, stereoselective (regioselective). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Name: 4-Methoxyphenylacetic acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem