Category: isoquinoline

Muratov, Karim published the artcileConfinement-Induced Selectivities in Gold(I) Catalysis-The Benefit of Using Bulky Tri-(ortho-biaryl)phosphine Ligands, Quality Control of 151-10-0, the main research area is crystal structure; Catalysis; Confinement; Cycloisomerization; Gold; Phosphine Ligands.

The confinement of a catalytic site is an efficient strategy to control a reaction and modulate its selectivity. In the present work, a new class of structurally simple and easily accessible bulky tri-(ortho-biaryl)phosphine ligands were accessed, and their gold(I) complexes [LAuX] [L = [2-(RC6H4)C6H4]3P, where R = 3-tBu, 3-Bu, 4-tBu, 4-C5H11; L = [2-(2-naphthyl)phenyl]3P; X = Cl, NTf2, NCMe] were prepared Their X-ray diffraction anal. and the comparative evaluation of their VBur% and G steric parameters against a series of gold complexes commonly employed in catalysis demonstrated their confined nature. Despite their notable steric congestion, these complexes exhibited remarkable catalytic activities and unusual selectivities, both in nature and level, that make them unique in the field of synthetic homogeneous gold catalysis.

Angewandte Chemie, International Edition published new progress about Alkenynes Role: RCT (Reactant), RACT (Reactant or Reagent) (derivatives). 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Quality Control of 151-10-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Schulz, Goeran published the artcileMetal free decarboxylative aminoxylation of carboxylic acids using a biphasic solvent system, Application of 4-Methoxyphenylacetic acid, the main research area is aromatic carboxylic acid aminoxyl radical decarboxylative aminoxylation; alkoxyamine preparation.

The smooth oxidative radical decarboxylation of carboxylic acids with TEMPO and other derivatives as radical scavengers was reported. The key to success was the use of a two-phase solvent system to avoid otherwise predominant side reactions such as the oxidation of TEMPO by persulfate and enabled the selective formation of synthetically useful alkoxyamines. The method does not require transition metals and was successfully used in a new synthetic approach for the antidepressant indatraline.

Organic & Biomolecular Chemistry published new progress about Alkoxylated amines Role: SPN (Synthetic Preparation), PREP (Preparation). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Application of 4-Methoxyphenylacetic acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Mills, L. Reginald published the artcileNi-Catalyzed β-Alkylation of Cyclopropanol-Derived Homoenolates, HPLC of Formula: 151-10-0, the main research area is alkyl ketone preparation; cyclopropanol hydroxyphthalimide ester alkylation nickel catalyst.

Metal homoenolates are valuable synthetic intermediates which provide access to β-functionalized ketones. In this report, a Ni-catalyzed β-alkylation reaction of cyclopropanol-derived homoenolates using redox-active N-hydroxyphthalimide (NHPI) esters as the alkylating reagents has been disclosed. The reaction is compatible with 1°, 2°, and 3° NHPI esters. Mechanistic studies imply radical activation of the NHPI ester and 2e β-carbon elimination occurring on the cyclopropanol.

Organic Letters published new progress about Alkyl aryl ketones Role: SPN (Synthetic Preparation), PREP (Preparation). 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

Prabhala, Pavankumar published the artcileFacile one-pot synthetic access to libraries of diversely substituted 3-aryl (Alkyl)-coumarins using ionic liquid (IL) or conventional base/solvent, and an IL-mediated approach to novel coumarin-bearing diaryl-ethynes, Quality Control of 104-01-8, the main research area is aryl alkyl coumarin preparation; acetic acid aryl salicylaldehyde heterocyclization; coumarin diaryl ethyne preparation; arylethyne haloaryl coumarin Sonogashira reaction.

The in-situ formed carbonylimidazole derivatives of R1CH2COOH (R1 = CH3, 4-bromophenyl, naphthalen-1-yl, 3,4,5-trimethoxyphenyl, etc.) react at r.t. with substituted salicylaldehydes R2-2-OHC6H3CHO (R2 = H, 5-OMe, 4-Cl, 5-Br, etc.) in [BMIM][PF6] or [BMIM][BF4] as solvent, and [PAIM][NTf2] as basic-IL, to produce libraries of 3-aryl(alkyl)coumarins I (R2 = H, 6-OMe, 7-Cl, 6-Br, etc.). Whereas these reactions can also be performed with similar efficiency in THF by employing DBU and the IL approach offers easier work-up and recycling of the IL solvent. An IL-mediated approach to the synthesis of novel coumarin-bearing diaryl-ethynes II (R2 = H, 6-OMe; R3 = H, Me, CN, OMe, etc.) and III (R4 = N(CH3)2, CN) by the Sonogashira reaction is also reported, and the potential for recycling/reuse of the IL solvent is shown.

Tetrahedron Letters published new progress about Aliphatic acids Role: RCT (Reactant), RACT (Reactant or Reagent) (aryl). 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

Zhang, Qiao published the artcileSelective N-formylation/N-methylation of amines and N-formylation of amides and carbamates with carbon dioxide and hydrosilanes: promotion of the basic counter anions of the zinc catalyst, Quality Control of 5961-59-1, the main research area is carbon dioxide hydrosilane amine amide carbamate formylation methylation.

A catalyst composed of com. available Zn(OAc)2 and 1,10-phenanthroline (phen) was effective in the N-formylation/N-methylation of amines using CO2 as the C1 source in the presence of hydrosilanes. An equimolar reaction of N-methylaniline with PhSiH3 under a CO2 atmosphere yielded the N-formylation product in 92% yield at 25°C. Scale-up of the reaction using 10 mmol substrate was also successful in affording the desired product in 83% yield (1.1 g). This catalyst exhibits a high thermal stability and a turnover number (TON) of 385 000 at 150°C. In addition, the reaction of N-methylaniline in the presence of excess Ph2SiH2 produced N,N-dimethylaniline. Furthermore, our catalytic protocol was developed for the N-formylation of amides and carbamates, which have smaller pKa values and lower reactivities than the corresponding amines. The present Zn(OAc)2/phen catalyst was found to show versatility in the conversion of CO2 and amines into several functionalized organic chems. under mild conditions. We propose that the basic counter anion (i.e., the acetate) of the catalyst activates both the Si-H and N-H bonds.

Green Chemistry published new progress about Aliphatic amines Role: IMF (Industrial Manufacture), PREP (Preparation). 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Quality Control of 5961-59-1.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Dong, Wenbo published the artcileA highly stable all-in-one photocatalyst for aryl etherification: the NiII embedded covalent organic framework, Category: isoquinoline, the main research area is photocatalyst aryl etherification cross coupling nickel covalent organic framework.

The efficient conversion of aryl bromides to the corresponding aryl alkyl ethers by dual Ni/photocatalysis has seen great progress, but difficulties of recycling the photosensitizer or Ni complexes cause problems of sustainability. Here, the authors report the design of a novel, highly stable vinyl bridge 2-dimensional covalent organic framework (COF) containing Ni, which combines the role of photosensitizer and reactive site. The as-prepared sp2c-COFdpy-Ni acts as an efficient heterogeneous photocatalyst for C-O cross coupling. The sp2c-COFdpy-Ni can be completely recovered and used repeatedly without loss of activity, overcoming the limitations of the prior methods. Preliminary studies reveal that strong interlayer electron transfer may facilitate the generation of the proposed intermediate sp2c-COFdpy-NiI in a bimol. and self-sustained manner. This all-in-one heterogeneous photocatalyst exhibits good compatibility of substrates and tolerance of functional groups. The successful attempt to expand the 2-dimensional COFs with this new catalyst into photocatalytic organic transformation opens an avenue for photoredox/transition metal mediated coupling reactions.

Green Chemistry published new progress about Alkyl aryl ethers Role: SPN (Synthetic Preparation), PREP (Preparation). 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

Paul, Dipankar published the artcileExploring the Labile Nature of 2,4,6-Trimethoxyphenyl Moiety in Allylic Systems under Acidic Conditions, Formula: C8H10O2, the main research area is arene allylation carbon carbon bond cleavage methoxyphenyl group.

An investigation of the unexpected lability of the Csp3-Csp2 bond connecting 2,4,6-trimethoxyphenyl group and an allylic moiety is carried out. We observed that the catalytic presence of either Lewis or Broensted acid can render such 2,4,6-trimethoxyphenyl group labile. Several nucleophiles were found to substitute the labile C-C bond in mild reaction conditions resulting in very good yields of the allylated products [e.g., I + 5-nitroindole → II (91%) in presence of PTSA in MeNO2]. Even in the absence of a nucleophile, intramol. cyclization of the parent substrate under acidic activation caused the labile C-C bond to cleave. A major motivation of this study is to understand the lability of electron-rich aryl group in acidic medium, employing 2,4,6-trimethoxyphenyl moiety as a case study. A plausible mechanism is proposed after carrying out several control reactions as well as UV/Vis and 1H NMR spectroscopic studies. This work provides an insight into the activation of electron-rich arenes as a labile entity in acidic medium while also adding a conceptually novel C-C bond breaking approach to the vast literature of allylation of arenes.

European Journal of Organic Chemistry published new progress about Allylation (and regioselective allylation in case of unsym. substrates). 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Formula: C8H10O2.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Tvspv, Satya Guru published the artcileExcellent catalytic activity of ethylenediamine stabilised oxalate ligated aluminium coordination complex for synthesis of novel benzoquinolines, Quality Control of 86-51-1, the main research area is aluminum oxalate oxo complex preparation crystal structure heterocyclization catalyst.

Two-dimensional supramol. structure of oxalate ligated Al(III) coordination complex, (C2H10N2)2.[Al2(μ-O2)(oxalate)4]•2H2O (Al-Ox) was synthesized hydrothermally and determined the structural features with single-crystal x-ray diffraction studies. Unique oxo bridged dinuclear Al(III) clusters were established and each Al(III) atom bonded with two units of oxalate ligand. In the dinuclear Al(III) structure, two Al(III) atoms were separated with a bond distance of 2.8702 Å. Unsaturated metal centers creation upon activation acts as Lewis acid sites and ethylenediamine with a strong basic character in the structure remarkably facilitate an efficient and economic strategy for better organic transformations. The Lewis acid-base character catalytic efficacy of the complex is explored in the tandem multi-component synthesis of benzoquinoline-2-carbonitrile moieties. The synergy between the exceptional Lewis acidic and basic properties of Al-Ox contributed to its excellent catalytic activity in the generation of five new benzoquinoline-2-carbonitriles in impressive yields (92-96%) in short reaction time (∼15 min) in a simple one-pot protocol, in ethanol. Recyclability with consistent activity (>5 times) is the added advantage.

Polyhedron published new progress about Aromatic nitriles Role: SPN (Synthetic Preparation), PREP (Preparation). 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, Quality Control of 86-51-1.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Xing, Ai-Ping published the artcileCuO-catalyzed conversion of arylacetic acids into aromatic nitriles with K4Fe(CN)6 as the nitrogen source, Application of 4-Methoxyphenylacetic acid, the main research area is aromatic nitrile preparation; arylacetic acid cyanation copper catalyst.

CuO was demonstrated to be effective as the catalyst for the conversion of arylacetic acids to aromatic nitriles ArCN [Ar = Ph, 2-MeC6H4, 1-naphthyl, etc.] with non-toxic and inexpensive K4Fe(CN)6 as the nitrogen source via the complete cleavage of the C≡N triple bond. The present method allowed a series of arylacetic acids including phenylacetic acids, naphthaleneacetic acids, 2-thiopheneacetic acid and 2-furanacetic acid to be converted into the targeted products in low to high yields.

Catalysis Communications published new progress about Aromatic nitriles Role: SPN (Synthetic Preparation), PREP (Preparation). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Application of 4-Methoxyphenylacetic acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Chang, Meng-Yang published the artcileSynthesis of 1-Aryl Isoquinolinones or o-Diaryl Pyrimidines via Bismuth Triflate-Mediated Intermolecular Annulation of Arylacetic Acids with Nitroarylaldehydes or Trimethoxybenzene in the Presence of Acetonitrile, Synthetic Route of 104-01-8, the main research area is aryl isoquinolinone diaryl pyrimidine preparation; nitroarylaldehyde arylacetic acid trimethoxybenzene intermol multicomponent condensation bismuth triflate.

In this article, bismuth triflate (Bi(OTf)3)-controlled intermol. multi-component condensation of oxygenated arylacetic acids with electron-withdrawing nitroarylaldehydes or electron-donating trimethoxybenzene provide 1-aryl isoquinolinones or o-diaryl pyrimidines in acetonitrile at 60°C. The uses of various metal triflates and reaction conditions are investigated in the one-pot reaction. Only water is generated as the byproduct via (4C+1C+1N) and (2C+1N1C+1N1C) annulation routes. Plausible mechanisms have been proposed.

Advanced Synthesis & Catalysis published new progress about Aryl aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent) (nitro). 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