Day: November 16, 2022

Chang, Meng-Yang published the artcileTrifluoroacetic Anhydride Mediated One-Pot Synthesis of 1-Aryl Isochroman-3-ones via the Carboxy-Pictet-Spengler Reaction, Quality Control of 104-01-8, the main research area is arylacetic acid arylaldehyde ketone trifluoroacetic anhydride Pictet Spengler annulation; aryl isochromanone green one pot preparation.

In this paper, a novel and open-vessel route for the facile-operational synthesis of 1-aryl isochroman-3-ones is described via (CF3CO)2O (trifluoroacetic anhydride, TFAA)-mediated intermol. (4 + 2) annulation of oxygenated arylacetic acids with arylaldehydes or ketones under mild reaction conditions. A plausible mechanism is proposed and discussed herein. Various reaction conditions are investigated for efficient transformation under an environmentally friendly one-pot carboxy-Pictet-Spengler reaction.

Journal of Organic Chemistry published new progress about Aryl aldehydes 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, Quality Control of 104-01-8.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Kasar, Sandeep B. published the artcileUltrasonically Assisted Efficient and Green Protocol for the Synthesis of 4H-isoxazol-5-ones using Itaconic Acid as a Homogeneous and Reusable Organocatalyst, Formula: C9H10O3, the main research area is arylaldehyde hydroxylamine hydrochloride ethylacetoacetate itaconic acid three component cyclocondensation; arylidene methylisoxazolone preparation green chem ultrasonication.

Itaconic acid was used as a green catalyst for the synthesis of 4H-isoxazol-5-ones derivatives under conventional as well as ultrasound irradiation technique. Ultrasound irradiation condition required less time for the completion of the reaction and also the yields were better. Ambient reaction conditions were used to carry out transformation for multicomponent reaction. Metal-free, mineral acid-free synthesis were key features of the present protocol.

Current Organocatalysis published new progress about Aryl aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, Formula: C9H10O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Dyachenko, Natalia V. published the artcileSynthesis of fused heterocyclic systems via the Mallory photoreaction of arylthienylethenes, SDS of cas: 86-51-1, the main research area is arylthienylethene diastereoselective preparation Mallory photoreaction UV visible spectra; naphthothiophene preparation crystal structure UV visible fluorescence spectra.

Photochem. oxidative cyclization of 2- and 3-thienylstilbenes (heterostilbenes) containing mono-, di- and trimethoxy groups in the benzene ring or heterocyclic fragment resulted in the formation of isomeric thieno-annelated polycyclic aromatic compounds demonstrating optical properties that differ from those of initial stilbene derivatives The structures of cyclic products were evaluated via 1H and 13C-NMR, HRMS, elemental anal. and X-ray crystallog. The research was aimed to study the effect of substituents in stilbene derivatives of thiophene as well as the position of the styryl fragment in the thiophene nucleus on the occurrence of photocyclization reactions.

Photochemical & Photobiological Sciences published new progress about Aryl aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 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

Luo, Zhenli published the artcileBF3·Et2O as a metal-free catalyst for direct reductive amination of aldehydes with amines using formic acid as a reductant, Application of 4-Methoxy-N-methylaniline, the main research area is aldehyde amine reductive amination formic acid reductant boron trifluoride.

A versatile metal- and base-free direct reductive amination of aldehydes with amines using formic acid as a reductant under the catalysis of inexpensive BF3·Et2O has been developed. A wide range of primary and secondary amines and diversely substituted aldehydes are compatible with this transformation, allowing facile access to various secondary and tertiary amines in high yields with wide functional group tolerance. Moreover, the method is convenient for the late-stage functionalization of bioactive compounds and preparation of commercialized drug mols. and biol. relevant N-heterocycles. The procedure has the advantages of simple operation and workup and easy scale-up, and does not require dry conditions, an inert atm. or a water scavenger. Mechanistic studies reveal the involvement of imine activation by BF3 and hydride transfer from formic acid.

Green Chemistry published new progress about Aryl aldehydes 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, Application of 4-Methoxy-N-methylaniline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Smith, Jennifer published the artcileChiral cyclometalated iridium complexes for asymmetric reduction reactions, Application of 2,3-Dimethoxybenzaldehyde, the main research area is iridium reduction transfer hydrogenation cyclometalation iridacycle reductive amination catalyst; ketone pyridinium ion arylamine benzylamine; piperidine secondary amine asym preparation mol structure.

A series of chiral cyclometalated iridium complexes have been synthesized by cyclometalating chiral 2-aryl-oxazoline and imidazoline ligands with [Cp*IrCl2]2. These iridacycles were studied for asym. transfer hydrogenation reactions with formic acid as the hydrogen source and were found to display various activities and enantioselectivities, with the most effective ones affording up to 63% ee in the asym. reductive amination of ketones and 77% ee in the reduction of pyridinium ions.

Organic & Biomolecular Chemistry published new progress about Aralkyl amines Role: RCT (Reactant), RACT (Reactant or Reagent). 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, Application of 2,3-Dimethoxybenzaldehyde.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Zhao, Guangkuan published the artcileA Broad Substrate Scope of Aza-Friedel-Crafts Alkylation for the Synthesis of Quaternary α-Amino Esters, Synthetic Route of 151-10-0, the main research area is chloroaminal arene Friedel Crafts alkylation amino ester regioselective preparation.

A versatile synthetic protocol of aza-Friedel-Crafts alkylation has been developed for the synthesis of quaternary α-amino esters. This operationally simple alkylation proceeds under ambient conditions with high efficiency, regioselectivity, and an exceptionally broad scope of arene nucleophiles. A key feature of this alkylation is the role associated with the silver(I) salt counteranions liberated during the reaction. Taking advantage of a phase-transfer counteranion/Bronsted acid pair mechanism, we also report a catalytic enantioselective example of the reaction.

Organic Letters published new progress about Aminals Role: RCT (Reactant), RACT (Reactant or Reagent) (halo). 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Synthetic Route of 151-10-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Yasukawa, Naoki published the artcileGold-Catalyzed Tandem Oxidative Coupling Reaction between β-Ketoallenes and Electron-Rich Arenes to 2-Furylmethylarenes, Product Details of C8H10O2, the main research area is furylmethylarene preparation; ketoallene arene tandem oxidative coupling reaction gold catalyst.

A tandem oxidative coupling reaction of β-ketoallenes R1C(O)CH(R2)CH=C=CH2 (R1 = Ph, n-nonyl, 2-methoxyphenyl, etc.; R2 = H, n-pentyl; R1R2 = -(CH2)4-) and arenes ArH (Ar = 2,4,6-triemthoxyphenyl, 1H-indol-3-yl, 2-methoxy-9-methyl-9H-carbazol-3-yl, etc.) was developed, which leads to the formation of 2-furylmethylarenes I using AuCl3 and phenyliodine diacetate. The AuIII salt catalyzed the cyclization of β-ketoallenes to form a 2-furylmethyl gold intermediate, and the subsequent C-H functionalization of arenes proceeded smoothly. During the oxidative coupling, nucleophilic additions occurred at the center and terminal carbon atoms of the allene moiety to form C-O and C-C bonds.

Organic Letters published new progress about Allenes Role: RCT (Reactant), RACT (Reactant or Reagent) (keto). 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

Campano, Teresa E. published the artcileEnantioselective Addition of Alkynyl Ketones to Nitroolefins Assisted by Bronsted Base/H-Bonding Catalysis, Application of 4-Methoxyphenylacetic acid, the main research area is nitro alkynone preparation diastereoselective enantioselective; alkynyl ketone nitroolefin conjugate addition bifunctional bronsted base catalyst; Brønsted bases; Michael reaction; alkynyl ketones; asymmetric catalysis; organocatalysis.

Various sets of enolizable alkynyl ketones (including Me ynones with α-aryl, α-alkenyl and α-alkoxy groups) were able to react smoothly with nitroolefins with the assistance of bifunctional Bronsted base/H-bond catalysts to provide nitro alkynones with two consecutive tertiary stereocenters I [R1 = Ph, 4-MeC6H4, 4-ClC6H4, etc.; R2 = n-Pr, Ph, 2-furyl, etc.; R3 = MeC=CH2, HC=CHPh, Ph, OBn, etc.] in a highly diastereo- and enantioselective fashion. Further transformation of the obtained adducts into optically active acyclic and polycyclic mols., including some with intricate carbon skeletons, was also demonstrated.

Chemistry – A European Journal published new progress about Alkenes, nitro 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, Application of 4-Methoxyphenylacetic acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Liu, Shanshan published the artcileDinuclear Zinc-AzePhenol Catalyzed Asymmetric Aza-Henry Reaction of N-Boc Imines and Nitroalkanes under Ambient Conditions, HPLC of Formula: 86-51-1, the main research area is asym aza Henry reaction Boc imine nitroalkane; dinuclear zinc AzePhenol catalyst asym aza Henry reaction.

The asym. aza-Henry reaction of N-Boc imines and nitroalkanes was realized in the presence of 10 mol% dinuclear zinc-AzePhenol catalysts under ambient conditions. A variety of nitroamines were obtained in good yields (up to 97%) with excellent enantioselectivities (up to 99% ee) and high diastereoselectivity (up to 14:1 dr). Our protocol combined the operational simplicity and mild reaction conditions, thus making the process amenable for tech. applications.

Journal of Organic Chemistry published new progress about Alkanes, nitro Role: RCT (Reactant), RACT (Reactant or Reagent). 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, HPLC of Formula: 86-51-1.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Boon, Byron A. published the artcileTriarylaminium Radical Cation Promoted Coupling of Catharanthine with Vindoline: Diastereospecific Synthesis of Anhydrovinblastine and Reaction Scope, Application of 1,3-Dimethoxybenzene, the main research area is anhydrovinblastine diastereoselective synthesis oxidative coupling triarylaminium promoted.

A new triarylaminium radical cation promoted coupling of catharanthine with vindoline is disclosed, enlisting tris(4-bromophenyl)aminium hexachlororantimonate (BAHA, 1.1 equiv) in aqueous 0.05 N HCl/trifluoroethanol (1-10:1) at room temperature (25°C), that provides anhydrovinblastine in superb yield (85%) with complete control of the newly formed quaternary C16′ stereochem. A definition of the scope of aromatic substrates that participate with catharanthine in the BAHA-mediated diastereoselective coupling reaction and simplified indole substrates other than catharanthine that participate in the reaction are disclosed that identify the key structural features required for participation in the reaction, providing a generalized indole functionalization reaction that bears little structural relationship to catharanthine or vindoline.

Journal of the American Chemical Society published new progress about Alkaloids 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