Category: isoquinoline

Abrams, Dylan J. published the artcileDonor-Acceptor-Acceptor 1,3-Bisdiazo Compounds: An Exploration of Synthesis and Stepwise Reactivity, COA of Formula: C9H10O3, the main research area is bisdiazo compound preparation; cyclic orthoester preparation; keto ester acetamidobenzenesulfonyl azide.

Metal carbenes, derived from the decomposition of diazo compounds, are valued for their capacity to perform a variety of transformations. A unique class of acyclic, bis-diazo compounds, the donor-acceptor-acceptor 1,3-bisdiazo compounds, are described herein. These compounds are available from acyclic β-keto esters and especially reactive at the donor-acceptor diazo unit. These bisdiazo compounds react smoothly with rhodium acetate and alcs. to give monodiazo, cyclic orthoesters, presumably through the capture of a transient oxonium ylide.

Organic Letters published new progress about Ketocarboxylic acids, esters 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, COA of Formula: C9H10O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Yang, Jianping published the artcileCombined Theoretical and Experimental Studies Unravel Multiple Pathways to Convergent Asymmetric Hydrogenation of Enamides, Quality Control of 104-01-8, the main research area is vinyl oxazolidinone iridium catalyst enantioselective asym hydrogenation reaction; ethyl oxazolidinone preparation.

A highly efficient convergent asym. hydrogenation of E/Z mixtures of enamides catalyzed by N,P-iridium complexes supported by mechanistic studies was reported. It was found that reduction of the olefinic isomers (E and Z geometries) produced chiral amides with the same absolute configuration (enantioconvergent hydrogenation). This allowed the hydrogenation of a wide range of E/Z mixtures of trisubstituted enamides with excellent enantioselectivity (up to 99% ee). A detailed mechanistic study using deuterium labeling and kinetic experiments revealed two different pathways for the observed enantioconvergence. For α-aryl enamides, fast isomerization of the double bond took place, and the overall process resulted in kinetic resolution of the two isomers. For α-alkyl enamides, no double bond isomerization was detected, and competition experiments suggested that substrate chelation was responsible for the enantioconvergent stereochem. outcome. DFT calculations were performed to predict the correct absolute configuration of the products and strengthen the proposed mechanism of the iridium-catalyzed isomerization pathway.

Journal of the American Chemical Society published new progress about Aromatic esters 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

Hornink, Milene Macedo published the artcileBiobased Spiroimides from Itaconic Acid and Formamides: Molecular Targets for a Novel Synthetic Application of Renewable Chemicals, Synthetic Route of 5961-59-1, the main research area is spiro dihydroquinolinone succinimide spiroindolinone glutarimide preparation; dihydroquinolinone indolinone itaconic acid anhydride formamide Fenton photochem flow.

Herein, a novel synthetic application of renewable chems., itaconic acid and formamides, is described. Proper exploitation of the reactivity of itaconic acid and formamide allows for the development of an efficient synthetic approach for the production of several new biobased spiroimides, spiro[dihydroquinolin-2-one-succinimides] I (R1 = H, Me, Cl, etc.; R2 = Me, Ph, Bn; R3 = H, Me) and spiro[indolin-2-one-glutarimides] II (R1 = H, OMe, CF3; R2 = Me, Bn; R3 = H, Me), in excellent overall yields (up to 98%).

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

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Bauer, Adriano published the artcileChemoselective formal β-functionalization of substituted aliphatic amides enabled by a facile stereoselective oxidation event, COA of Formula: C9H10O3, the main research area is epoxide preparation chemoselective diastereoselective; amide oxidation.

A facile and stereoselective dehydrogenation event enabling the functionalization of aliphatic amides, e.g., 1-(indolin-1-yl)-2-methylpropan-1-one at different positions in a one-pot fashion has been described. Derivatives of relevant pharmaceuticals were formally functionalized in the β-position in late-stage manner. A single-step synthesis of incrustoporine from a simple precursor further showcases the potential utility of this approach.

Chemical Science published new progress about Chemoselectivity. 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, COA of Formula: C9H10O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Jia, Shikun published the artcileRhodium-Catalyzed Formal C-O Insertion in Carbene/Alkyne Metathesis Reactions: Synthesis of 3-Substituted 3H-Indol-3-ols, Related Products of isoquinoline, the main research area is indolol synthesis rhodium catalyzed insertion carbene alkyne metathesis.

An efficient and novel rhodium-catalyzed formal C-O insertion reaction of alkyne-tethered diazo compounds for the synthesis of 3H-indol-3-ols is described. A type of donor/donor rhodium carbene generated in situ via a carbene/alkyne metathesis (CAM) process is the key intermediate and terminates in a unique transformation different from donor/acceptor carbenoids. In addition, 18O-labeling experiments indicate that intramol. oxygen-atom transfer from the amide group to the carbon-carbon triple bond occurs during this transformation.

Organic Letters published new progress about Carbene complexes Role: CAT (Catalyst Use), PEP (Physical, Engineering or Chemical Process), RCT (Reactant), SPN (Synthetic Preparation), USES (Uses), PROC (Process), RACT (Reactant or Reagent), PREP (Preparation) (donor/donor rhodium carbene generated in situ). 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

Gou, Quan published the artcileDivergent Regioselective Csp2-H Difluoromethylation of Aromatic Amines Enabled by Nickel Catalysis, Safety of 4-Methoxy-N-methylaniline, the main research area is arylamine bromodifluoroacetate nickel catalyst regioselective difluoromethylation; difluoromethylarene preparation; difluorooxindole preparation.

Herein, the first catalytic protocol for nickel-catalyzed ortho or para position difluoromethylation of various aromatic amines was developed with the assistance of a bidentate phosphine ligand, offering an invaluable synthesis means to construct extensive p-difluoromethylated products and difluorooxindole derivatives with significant functional fragments. Furthermore, the gram-scale reaction, broad substrate scope, excellent functional-group compatibility, late-stage difluoromethylation of pesticides, and even formal synthesis of HDAC6 inhibitors further demonstrate the usefulness of this method.

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

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Gennaiou, Kyriaki published the artcileDivergent Synthesis of Bisphenols and Diaryl Ethers by Metal Compatible Organocatalytic Aerobic Oxidation of Boronic Acids, Safety of 1,3-Dimethoxybenzene, the main research area is arylboronic acid diketopiperazine catalyst chemoselective aerobic oxidation; phenol preparation; hydroxybenzene aylboronic acid diketopiperazine catalyst chemoselective oxidative coupling; diaryl ether preparation; bisphenol preparation.

The current study showed that pyrrole-proline 2,5-diketopiperazine (DKP) organocatalyst, in the presence of Hantzsch ester and HFIP was compatible with copper(II) salts for the activation of dioxygen. These findings allowed to selectively diverge the oxidation profile of boronic acids for the synthesis of phenols, bisphenols and diaryl ethers by DKP-promoted aerobic oxidation and subsequent metal oxidative-coupling or Chan-Lam-Evans type reaction of the formed phenols.

Advanced Synthesis & Catalysis published new progress about Chemoselectivity. 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Safety of 1,3-Dimethoxybenzene.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Qi, Dan published the artcilePhotoinduced synthesis of functionalized oxetanes via diradical-mediated ring contraction, Safety of 4-Methoxyphenylacetic acid, the main research area is aryl diazoacetate dihydrofuran photochem diastereoselective ring contraction; ethenyl aryl oxetane carboxylate preparation.

A versatile photochem. ring contraction was reported for the synthesis of oxetanes under catalyst-free conditions. The reaction was enabled by the use of 2,5-dihydrofurans and diazo compounds under visible light irradiation, delivering functionalized 3-vinyloxetanes as major products. The outstanding features of this protocol included mild reaction conditions, operational simplicity and scalability, as well as excellent functional-group tolerance. DFT calculations indicated that the reaction may proceed through the formation of an oxonium ylide intermediate followed by a diradical-mediated rearrangement and cyclization.

Green Chemistry published new progress about Diastereoselective synthesis. 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

Liu, Peng published the artcileN-Methylation of Amines with Methanol in the Presence of Carbonate Salt Catalyzed by a Metal-Ligand Bifunctional Ruthenium Catalyst [(p-cymene)Ru(2,2′-bpyO)(H2O)], Synthetic Route of 5961-59-1, the main research area is sulfonamide methanol cesium carbonate ruthenium catalyst methylation green chem; methylsulfonamide preparation; amine methanol cesium carbonate ruthenium catalyst methylation green chem; methylamine preparation.

A ruthenium complex [(p-cymene)Ru(2,2′-bpyO)(H2O)] was found to be a general and efficient catalyst for the N-methylation of amines with methanol in the presence of carbonate salt. Moreover,a series of sensitive substituents such as nitro, ester, cyano and vinyl groups were tolerated under present conditions. It was confirmed that OH units in the ligand were crucial for the catalytic activity. Notably, this research exhibited the potential of metal-ligand bifunctional ruthenium catalysts for the hydrogen auto-transfer process.

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

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Xu, Rui published the artcileThree-component difluoroalkylamination of alkenes mediated by photoredox and iron cooperative catalysis, Computed Properties of 5961-59-1, the main research area is alkene photochem difluoroalkylamination aryl amine difluorobromoacetate iron catalyst; ester arylamino difluoro preparation.

A three-component difluoroalkylamination of alkenes R1CH:CHR2 (R1 = Ph, 4-MeC6H4, 3-BrC6H4, C6F5, PhCH2, etc., R2 = H; R1 = Ph, R2 = Me) with BrCF2CO2Et and amines R3NHR4 (R3 = Ph, 4-MeC6H4, 4-MeOC6H4, R4 = Me; R3 = Ph, R4 = H) mediated by visible-light photoredox and iron cooperative catalysis to produce fluorinated amino esters R3R4NCHR1CHR2CF2CO2Et is described. Electron rich, electron poor and internal styrenes were all tolerated giving the desired products in good yields. The Csp3-Csp3 and Csp3-N bonds were simultaneously formed under mild conditions. A radical pathway was proposed by exptl. studies.

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

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem