Day: November 10, 2022

White, Nicholas A. published the artcilePhosphoramidates as Steering Elements for Highly Selective Access to Complementary Imidazo[1,2-a]pyrimidine Isomers, Application of 4-Methoxy-N-methylaniline, the main research area is imidazopyrimidine isomer preparation; phosphoryl aminoimidazole ethoxy acrylamide condensation; aminobenzimidazole diethyl chlorophosphate phosphorylation.

Selective N-phosphorylation of aminoimidazoles results in a key steering element that controls isomeric selectivity in the condensation of β-ethoxy acrylamides and aminoimidazoles to furnish imidazo[1,2-a]pyrimidines is reported. Conditions that provide highly selective (99:1) phosphorylation at the endo- or exocyclic nitrogen are identified. Either the 2-amino or 4-amino isomer of the (benzo)imidazo[1,2-a]pyrimidine products could be isolated in 64-95% yield. Mass spectrometric anal. and computational studies give insight into the mechanism of this exceptionally selective transformation.

Organic Letters published new progress about Benzimidazoles Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation) (amino). 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Application of 4-Methoxy-N-methylaniline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Hamel, Jean-Denys published the artcileHighly regioselective gold-catalyzed formal hydration of propargylic gem-difluorides, Formula: C11H12O3, the main research area is difluoroketone preparation regioselective; propargylic gem difluoride hydration gold catalyst.

Herein, a highly regioselective gold-catalyzed formal hydration of propargylic gem-difluorides was reported. Not only does this transformation provide access to versatile fluorinated building blocks that were difficult or hardly possible to access beforehand, but it also represents a rare case of a highly regioselective gold-catalyzed hydroalkoxylation of internal alkynes and puts forward the utility of the difluoromethylene unit as a directing group in catalysis.

Organic & Biomolecular Chemistry published new progress about Haloketones 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, Formula: C11H12O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Tang, Jinghua published the artcileChemoselective Cross-Coupling between Two Different and Unactivated C(aryl)-O Bonds Enabled by Chromium Catalysis, SDS of cas: 86-51-1, the main research area is aryl methyl ether imino aryl ester chromium cross coupling; biaryl preparation.

We report here the first example of cross-coupling between two different and unactivated C(aryl)-O bonds with chromium catalysis. The combination of a low-cost Cr(II) salt, 4,4′-di-tert-butyl-2,2′-dipyridyl (dtbpy) as the ligand, and magnesium as the reductant shows high reactivity in promoting the reductive cross-coupling of aryl Me ether derivatives with aryl esters by cleavage and coupling of two different C(aryl)-O bonds under mild conditions. The formation of active low-valent Cr species by reduction of CrCl2 with Mg can be considered, which prefers to initially activate the C(aryl)-O bond of Ph Me ether with the chelation help of dtbpy and an o-imine auxiliary. The subsequent consecutive reduction, second C(aryl)-O activation, and reductive elimination allow for the achievement of selective cross-coupling of C(aryl)-O/C(aryl)-O bonds.

Journal of the American Chemical Society published new progress about Aromatic esters Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, SDS of cas: 86-51-1.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Ruan, Mengyao published the artcileElectrochemical two-electron oxygen reduction reaction (ORR) induced aerobic oxidation of α-diazoesters, Synthetic Route of 104-01-8, the main research area is ketoester preparation electrochem green chem; diazoester oxygen reduction reaction aerobic oxidation.

The recent progress in the oxidation of α-diazoesters R1C(=N2)C(O)OR2 (R1 = Ph, 2-naphthyl, benzo[d][1,3]dioxol-5-yl, etc.; R2 = Me, cyclohexyl, (tetrahydrofuran-2-yl)methyl, etc.) to α-ketoesters R1C(O)C(O)OR2 by in situ generated hydrogen peroxide via a two-electron oxygen reduction approach was described. A diverse collection of valuable α-ketoester products was obtained with moderate to high yields under an exogenous-oxidant-free and metal catalyst-free electrochem. conditions.

Chemical Communications (Cambridge, United Kingdom) published new progress about Electrochemical oxidation (aerobic). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Synthetic Route of 104-01-8.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Tejedor-Calvo, Eva published the artcileSupercritical CO2 extraction method of aromatic compounds from truffles, Category: isoquinoline, the main research area is truffle aromatic compound supercritical carbon dioxide extraction.

Truffles are a well-known worldwide product mainly appreciated by their unique aroma, which is composed by more than 50 volatile compounds However, to this day, no one has accomplished to find the aromatic key that evokes the real aroma of truffles for its use as food flavoring. Among them, black truffle was selected for extraction with supercritical fluids using CO2 as solvent recovering natural truffle aroma fraction. To achieve the optimal extraction ratio, time, pressure and grapeseed oil addition to the separators were evaluated. Aroma from black truffle powder, extracts obtained, and residual cakes fractions were characterized by headspace gas chromatog.-spectrometry and olfactometry techniques. The results indicated that optimal extraction conditions were 30 MPa for 3 h. Also, grapeseed oil addition enhanced trapping some key truffle aromatic compounds as 2,3-butanodione, 2-methyl-1-butanol, octanal and di-Me disulfide. Olfactometry study showed the aromatic profile of the extracts indicating the mols. Et pentanoate (fruity), 1-hexen-3-one (metallic) and Et hexanoate (fruity) as the main compounds of extracts samples. For the first time, a natural truffle aroma has been obtained using low-value truffles. After aromatic extraction, carbohydrates, proteins, and phenolic compounds were analyzed within the residues, showing a potential source of bioactive compounds

LWT–Food Science and Technology published new progress about Bioactive agents. 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Category: isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Xu, Yan published the artcilePhotochemical, Nickel-Catalyzed C(sp3)-C(sp3) Reductive Cross-Coupling of α-Silylated Alkyl Electrophiles and Allylic Sulfones, Name: 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, the main research area is nickel catalyzed reductive cross coupling silylated alkyl bromide allylsulfone; homoallylic silane preparation.

A Ni-catalyzed C(sp3)-C(sp3) cross-electrophile coupling between α-silylated alkyl bromides and an allylic sulfone is reported. Instead of a metal as the stoichiometric reductant, this photochem. reductive process relies on a Hantzsch ester but does not require an exogenous photocatalyst. The role of the silyl group in the α-position and its stabilizing effect on the assumed C-centered radical intermediate is demonstrated. The functional-group tolerance is excellent, allowing for the synthesis of various homoallylic silanes.

ACS Catalysis published new progress about Bromoalkanes Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 1205-17-0 belongs to class isoquinoline, name is 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, and the molecular formula is C11H12O3, Name: 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Liao, Yangzhen published the artcileTransition-metal-free radical relay cyclization of vinyl azides with 1,4-dihydropyridines involving a 1,5-hydrogen-atom transfer: access to α-tetralone scaffolds, HPLC of Formula: 1205-17-0, the main research area is tetralone scaffold preparation green chem diastereoselective; vinyl azide dihydropyridine radical hydrogen transfer cyclization.

The remote C(sp3)-H functionalization enabled by a radical-mediated 1,5-hydrogen-atom transfer (HAT) process using 1,4-dihydropyridines I (R = cyclohexyl, 3-phenyl-2-methylpropyl, 1-cyclohexylethyl, etc.; R1 = C(O)OEt, CN) and vinyl azides R2C(=CH2)N3 (R2 = 2-chlorophenyl, 1-naphthyl, benzofuran-2-yl, etc.) as precursors has been described. In this study, 1,4-dihydropyridines I can function as 1,2-diradical synthons through sequential homolytic cleavage of an ipso-C-C bond and a β-C(sp3)-H bond. This reaction offers facile access to a diverse range of α-tetralones e.g., II with excellent stereoselectivity. The utility of the present method is further highlighted by its application to rapid assembly of the tetracyclic scaffold present in furanosteroids as well as the synthesis of aromatic amines.

Organic Chemistry Frontiers published new progress about C-C bond formation. 1205-17-0 belongs to class isoquinoline, name is 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, and the molecular formula is C11H12O3, HPLC of Formula: 1205-17-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Guo, Yuan-Qiang published the artcileVisible-Light-Induced Deoxygenation/Defluorination Protocol for Synthesis of γ,γ-Difluoroallylic Ketones, Related Products of isoquinoline, the main research area is difluoroallylic ketone preparation photocatalytic deoxygenation defluorination acid trifluoromethyl alkene.

Herein, we describe an efficient, practical photocatalytic deoxygenation/defluorination protocol for the synthesis of γ,γ-difluoroallylic ketones from com. available aromatic carboxylic acids, triphenylphosphine, and α-trifluoromethyl alkenes. The protocol has good functional group tolerance and a broad substrate scope. Using this method, we accomplished the late-stage functionalization of several bioactive mols.

Organic Letters published new progress about Aromatic carboxylic acids Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Related Products of isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Liu, Wei published the artcileMesoionic Carbene (MIC)-Catalyzed H/D Exchange at Formyl Groups, Name: 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, the main research area is aldehyde triazolylidene catalyst deuteration; imine triazolylidene catalyst deuteration.

Investigation of the reaction of aldehydes with 1,2,3-triazolylidenes has revealed the reversible formation of Breslow intermediates and the inhibition of the condensation steps in methanol solvent. 1,2,3-Triazolylidenes catalyzed the H/D exchange of aryl, alkenyl and alkyl aldehydes in high yields and deuterium incorporation levels using deuterated methanol as an affordable D source. The unique properties of these mesoionic carbenes (MICs) enabled a streamlined preparation of deuterated synthetic intermediates and pharmacophores that are highly valuable as mechanistic and metabolic probes.

Chem published new progress about Deuteration. 1205-17-0 belongs to class isoquinoline, name is 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, and the molecular formula is C11H12O3, Name: 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Shi, Cuiying published the artcileRoom-Temperature C-H Bromination and Iodination with Sodium Bromide and Sodium Iodide Using N-Fluorobenzenesulfonimide as an Oxidant, SDS of cas: 151-10-0, the main research area is quinoline fluorobenzenesulfonimide regioselective oxidative halogenation green chem; benzene fluorobenzenesulfonimide regioselective oxidative halogenation green chem.

A transition-metal-free electrophilic bromination and iodination of arene through C-H cleavage at room temperature was developed in excellent to quant. yields with broad arene scope and good regioselectivity, in which environment-benign and readily available sodium halides, NaBr or NaI, were employed as halogen sources in accompany with N-fluorobenzenesulfonimide (NFSI) as an oxidant. Studies was demonstrated that, in this air- and moisture-resistant scalable halogenation under mild conditions, the oxidant NFSI was reduced to dibenzenesulfonimide which usually serves as the starting material for the preparation of NFSI, rendering this facile and versatile protocol promising potentials for future applications in organic synthesis.

ChemistrySelect published new progress about Bromination, regioselective (oxidative). 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, SDS of cas: 151-10-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem