Category: isoquinoline

Hazra, Susanta published the artcileReactivity of Styrenes in Micelles: Safe, Selective, and Sustainable Functionalization with Azides and Carboxylic Acids, Safety of 4-Methoxyphenylacetic acid, the main research area is azide ester preparation; styrene carboxylic acid amphiphile PS 750M mimics NBS oxyfunctionalization.

An amphiphile PS-750-M that mimics dipolar-aprotic organic solvents enables N-bromo succinimide (NBS)-mediated one-pot oxyfunctionalization of styrenes in water under mild conditions. Control experiments reveal the involvement of the radical pathway. The radical intermediate was also trapped with butylated hydroxytoluene to obtain a peroxy educt. The method is scalable without involving any operational risk. This aqueous micellar technol. for oxyfunctionalization is further applied on in situ reduction and click chem. to obtain β-azido alcs. and β-carbonyl triazoles.

ACS Sustainable Chemistry & Engineering published new progress about Azides Role: SPN (Synthetic Preparation), PREP (Preparation). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Safety of 4-Methoxyphenylacetic acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Tang, Kai published the artcileRemoval of pharmaceuticals, toxicity and natural fluorescence through the ozonation of biologically-treated hospital wastewater, with further polishing via a suspended biofilm, Category: isoquinoline, the main research area is biofilm hospital wastewater treatment ozonation.

In the present study, a pilot-scale ozonation system was introduced as post treatment to reduce the pharmaceuticals and toxicity in the effluent of a pilot-scale Moving Bed Biofilm Reactor (MBBR) treating hospital wastewater. The ozonated effluent was polished further by suspended biofilm carriers to remove biodegradable organic matter and toxicity generated from ozonation byproducts. A laboratory ozonation system was used to mimic the experiments, which were carried out at the pilot plant so that the removal of pharmaceuticals in the pilot and laboratory experiments could be compared. Delivered ozone dose achieved 90% removal of pharmaceutical was obtained and it was normalized to dissolved organic carbon (DOC). These normalized results show that trimethoprim was eliminated by ozone easier than other pharmaceuticals. Fluorescence was found to be highly correlated to the removal of pharmaceuticals, and fluorescence with a wavelength of 275 nm of excitation and 310 nm of emission had the closest correlation. After polishing MBBR was introduced into the ozonated wastewater, half of its protein-like fluorophore was removed. The toxicity of the hospital wastewater during MBBR treatment was measured by Vibrio fischeri, the inhibition of which decreased from 80% to 50%. By applying ozonation, this inhibition reduced to 20%.

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about Biological wastewater treatment (moving bed biofilm reactor). 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Category: isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Wada, Yuuki published the artcileEnantio- and Diastereoselective Construction of Contiguous Tetrasubstituted Chiral Carbons in Organocatalytic Oxadecalin Synthesis, Computed Properties of 151-10-0, the main research area is stereoselective contiguous tetrasubstituted chiral carbon organocatalytic oxadecalin synthesis.

The organocatalytic enantio- and diastereoselective cycloetherification of 1,3-cyclohexanedione-bearing enones involving the in situ generation of chiral cyanohydrins was developed. This transformation offers the first catalytic asym. approach to oxadecalin derivatives containing contiguous tetrasubstituted chiral carbons at the bridge heads of the fused ring systems. Depending on substituents, both cis- and trans-decalin-type scaffolds were synthesized with good to excellent stereoselectivities, and a range of functional groups accumulated on the chiral quaternary carbon moieties of the trans-oxadecalin derivatives

Organic Letters published new progress about Cyclization catalysts, stereoselective (cycloetherification). 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Computed Properties of 151-10-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Laha, Joydev K. published the artcileImproved, gram-scale synthesis of sildenafil in water using arylacetic acid as the acyl source in the pyrazolo[4,3-d]pyrimidin-7-one ring formation, Recommanded Product: 4-Methoxyphenylacetic acid, the main research area is arylacetic acid aminobenzamide water potassium persulfate annulation oxidation green; quinazolinone preparation; arylbenzothiazole preparation; sildenafil preparation.

An improved, gram-scale synthesis of the blockbuster drug sildenafil, used for the treatment of male erectile dysfunction, has been developed. Unlike the previous literature, the current method demonstrates the use of arylacetic acid as an acyl source, a cheap oxidant K2S2O8, and water as the reaction medium in the key step of pyrazolo[4,3-d]pyrimidin-7-one ring formation. As well as being a green and benign approach, the current method reduces the cost by half compared to our previous strategy. In addition, the general relevance of the method has been demonstrated in the synthesis of a variety of quinazolinone and benzothiazole derivatives with excellent functional group tolerance.

New Journal of Chemistry published new progress about Benzamides Role: RCT (Reactant), RACT (Reactant or Reagent). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Recommanded Product: 4-Methoxyphenylacetic acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Yang, Xiao-Guang published the artcileElectrophilic Hypervalent Trifluoromethylthio-Iodine(III) Reagent, Computed Properties of 151-10-0, the main research area is hypervalent trifluoromethylthioiodine preparation nucleophile trifluoromethylthiolation.

The design and synthesis of hypervalent trifluoromethylthioiodine(III) reagent and the elucidation of its structure by NMR spectroscopy and X-ray crystallog. The trifluoromethylthiolation reactions of trifluoromethylthioiodine(III) with various nucleophiles were explored, and this compound was found to be a versatile electrophilic reagent for the transfer of a trifluoromethylthio group (-SCF3). The hydrogen-bonding mode responsible for the activation of 1 by the solvent 1,1,1,3,3,3-hexafluoro-2-propanol was investigated both exptl. and computationally.

Organic Letters published new progress about Dipeptides 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, Computed Properties of 151-10-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Guo, Hai-Ming published the artcileL-Prolinamide-catalyzed direct nitroso aldol reactions of α-branched aldehydes: a distinct regioselectivity from that with L-proline, Category: isoquinoline, the main research area is direct enantioselective nitroso aldol reaction aldehyde nitrosobenzene prolinamide catalyst.

The first direct enantioselective N-nitroso aldol reaction of aldehydes with nitrosobenzene catalyzed by an L-prolinamide derivative is presented; the reactions proceed smoothly furnishing the α-hydroxyamino carbonyl compounds, the otherwise disfavored products, in good yields with up to 64% ee. E.g., L-prolinamide derivative I catalyzed the direct enantioselective N-nitroso aldol reaction of EtCHMeCHO with PhNO to give 53% (-)-EtCMe(CH2OH)NPhOH (46% ee) after NaBH4 reduction

Chemical Communications (Cambridge, United Kingdom) published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 1205-17-0 belongs to class isoquinoline, name is 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, and the molecular formula is C11H12O3, Category: isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Lan, Liyuan published the artcilePreparation and odor characteristics of nitriles derived from aldehydes, HPLC of Formula: 1205-17-0, the main research area is aldehyde hydroxylamine hydrochloride reaction; aldoxime preparation dehydration; nitrile preparation odor.

Twenty nitriles, including saturated and unsaturated aliphatic, araliph., and aromatic nitriles, were prepared from the corresponding aldehydes, commonly used as flavors or fragrances. The aldehydes were converted to aldoximes first, which then underwent dehydration by treatment with oxalyl chloride in the presence of a catalytic amount of DMSO. The nitriles were obtained in high yields in most cases. The odor characteristics of the nitriles obtained were evaluated by GC-O. The nitriles present varied characteristic odors, which are usually distinct from those of the corresponding aldehydes.

Flavour and Fragrance Journal published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 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

Guin, Avishek published the artcileLewis Acid Catalyzed Ring-Opening 1,3-Aminothiolation of Donor-Acceptor Cyclopropanes Using Sulfenamides, Name: 4-Methoxy-N-methylaniline, the main research area is arylaminoalkyl arylthio malonic diester preparation; cyclopropane sulfenamide regioselective ring opening Lewis acid catalyst.

Yb(OTf)3 catalyzed mild and regioselective ring-opening 1,3-aminothiolation of donor-acceptor (D-A) cyclopropanes using sulfenamides has been demonstrated. The insertion of the C-C σ-bond of D-A cyclopropanes into the S-N σ-bond of sulfenamides allows the synthesis of diverse γ-aminated α-thiolated malonic diesters in moderate to good yields (up to 87%) with good functional group compatibility. The stereospecificity of the reaction was demonstrated using enantiomerically pure D-A cyclopropane.

Organic Letters published new progress about Cyclopropanes Role: RCT (Reactant), RACT (Reactant or Reagent). 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Name: 4-Methoxy-N-methylaniline.

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

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