Category: isoquinoline

Yu, Lu published the artcileRegio- and Enantioselective Formal Hydroamination of Enamines for the Synthesis of 1,2-Diamines, Product Details of C9H10O3, the main research area is regioselective enantioselective hydroamination enamine diamine synthesis; amines; copper; enamines; enantioselectivity; hydroamination.

The asym. formal hydroamination of enamines using a CuH catalyst is reported [e.g., enamine I + O-acylhydroxylamine II → diamine III (69%, 97:3 e.r.) in presence of (MeO)2MeSiH as hydride source, Cu(OAc)2 and (R)-DTBM-SEGPHOS]. The method provides a straightforward and efficient approach to the synthesis of chiral 1,2-dialkyl amines in good yields with high levels of enantioselectivities for a broad range of substrates, and should have significant value for the preparation of mols. bearing a 1,2-diamine motif.

Angewandte Chemie, International Edition published new progress about Diamines Role: SPN (Synthetic Preparation), PREP (Preparation) (chiral). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Product Details of C9H10O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Rosien, Michael published the artcileTitanium-Catalyzed Hydroaminoalkylation of Ethylene, Application of 4-Methoxy-N-methylaniline, the main research area is amine preparation; secondary amine ethylene hydroaminoalkylation titanium catalyst; amination; amines; ethylene; hydroaminoalkylation; titanium.

The first examples of titanium-catalyzed hydroaminoalkylation reactions of ethylene with secondary amines such as N-ethylaniline, N-methylcyclohexanamine, pyrrolidine, etc. are presented. The reactions can be achieved with various titanium catalysts and they do not require the use of high pressure equipment. In addition, the first solid-state structure of titanapyrrolidine I (R = H, Cl, Me; n = 2) that is formed by insertion of alkene into the Ti-C bond of titanaaziridine I (n = 1) is reported.

Chemistry – A European Journal published new progress about Aliphatic amines Role: SPN (Synthetic Preparation), PREP (Preparation). 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

Wang, Li-Jun published the artcileVolatile components in three commercial douchies, a Chinese traditional salt-fermented soybean food, Application In Synthesis of 21834-92-4, the main research area is volatile compound douchi fermented soybean.

Douchi is a traditional fermented soybean product originated in China and it has been consumed since ancient times as seasoning for food. Volatile components of three com. douchies were extracted using a simultaneous steam distillation and extraction apparatus (SDE). The extracts were analyzed by gas chromatog.-mass spectrometry (GC-MS). A total of 131 compounds were identified, but only 25 components were common to all three brands. Major classes of compounds included esters (29), acids (18), alcs. (16), pyrazines (14), ketones (13), aldehydes (12), phenols (6), hydrocarbons (5), furans (5), sulfur-containing compounds (5), pyridines (4), pyrimidines (2), and miscellaneous compounds (2).

International Journal of Food Properties published new progress about Acids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, Application In Synthesis of 21834-92-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Ding, Wenwu published the artcileCharacterization of volatile compounds between industrial closed fermentation and traditional open fermentation doubanjiang-meju, HPLC of Formula: 21834-92-4, the main research area is alc ester volatile compound doubanjiang meju closed open fermentation.

Doubanjiang-meju has been used as an intermediate for producing Pixian Douban (PXDB) and contributes significantly to its flavor. In this study, a profiling anal. of volatile compounds in open fermented doubanjiang-meju (OFD) and closed fermented doubanjiang-meju (CFD) was performed with gas chromatog.-mass spectrometry (GC-MS) and gas chromatog.-olfactometry (GC-O). A total of 42 and 50 volatile compounds were identified in the OFD and CFD, resp. Compared with the OFD, more diversity and higher concentrations of alcs. and esters were found in the CFD. Ten and 12 volatile compounds were finally identified as the major aroma-active compounds in the OFD and CFD, resp., by the combined anal. of aroma intensity values and odor activity values (OAVs). The CFD had significantly stronger umami and soy sauce flavor but weaker beany when compared with the OFD (p < 0.05) by quant. descriptive anal. (QDA), which were basically consistent with intensity values of aroma compounds obtained with GC-O. The results indicated that the CFD had better characteristics of volatile compounds than those of the OFD, which provided a basis of further study for the closed fermentation process of tank fermenter. European Food Research and Technology published new progress about Acids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 21834-92-4 belongs to class isoquinoline, name is 5-Methyl-2-phenylhex-2-enal, and the molecular formula is C13H16O, HPLC of Formula: 21834-92-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Liu, Luo-Yan published the artcileLigand-Promoted Non-Directed C-H Cyanation of Arenes, Safety of 1,3-Dimethoxybenzene, the main research area is arene silver cyanide palladium pyridinol catalyst regioselective cyanation; cyanoarene preparation; 2-pyridone; C−H activation; arenes; cyanation; palladium.

The first example of a 2-pyridone accelerated non-directed C-H cyanation with an arene as the limiting reagent was reported. This protocol was compatible with a broad scope of arenes, including advanced intermediates, drug mols. and natural products. A kinetic isotope experiment (kH/kD=4.40) indicated that the C-H bond cleavage is the rate-limiting step. Also, the reaction is readily scalable, further showcasing the synthetic utility of this method.

Chemistry – A European Journal published new progress about Aromatic hydrocarbons Role: SPN (Synthetic Preparation), PREP (Preparation). 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

Moore, James T. published the artcileLight-Driven Hydrodefluorination of Electron-Rich Aryl Fluorides by an Anionic Rhodium-Gallium Photoredox Catalyst, Category: isoquinoline, the main research area is rhodium gallium aluminum indium trisphosphinomethylaminophenylamine complex preparation structure property; arene preparation; photoredox rhodium gallium complex catalyst defluorination fluoroarene; Gallium; Heterobimetallic; Hydrodefluorination; Photoredox Catalysis; Rhodium.

An anionic Rh-Ga complex I·{Li(THF)4} catalyzed the hydrodefluorination of challenging C-F bonds in electron-rich aryl fluorides and trifluoromethylarenes when irradiated with violet light in the presence of H2, a stoichiometric alkoxide base, and a crown-ether additive. Based on theor. calculations, the LUMO (LUMO), which is delocalized across both the Rh and Ga atoms, becomes singly occupied upon excitation, thereby poising the Rh-Ga complex for photoinduced single-electron transfer (SET). Stoichiometric and control reactions support that the C-F activation is mediated by the excited anionic Rh-Ga complex. After SET, the proposed neutral Rh0 intermediate was detected by EPR spectroscopy, which matched the spectrum of an independently synthesized sample. Deuterium-labeling studies corroborate the generation of aryl radicals during catalysis and their subsequent hydrogen-atom abstraction from the THF solvent to generate the hydrodefluorinated arene products. Altogether, the combined exptl. and theor. data support an unconventional bimetallic excitation that achieves the activation of strong C-F bonds and uses H2 and base as the terminal reductant.

Angewandte Chemie, International Edition published new progress about Aromatic hydrocarbons 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

Shi, Jiale published the artcileMetal-Free Heterogeneous Semiconductor for Visible-Light Photocatalytic Decarboxylation of Carboxylic Acids, Application In Synthesis of 151-10-0, the main research area is aliphatic hetero aromatic arene preparation; hetero aromatic aliphatic acid hydrodecarboxylation photocatalyst; deuteride aliphatic hetero aromatic arene preparation; aromatic hetero aliphatic acid decarboxylative deuteration photocatalyst; diaryl methane preparation; carboxylic acid hetero aryl cyanide decarboxylative arylation photocatalyst.

A suitable protocol for the photocatalytic decarboxylation of carboxylic acids RC(O)OH (R = 3,5-dimethylphenyl, 2-(4-methylphenyl)ethyl, diphenylmethyl, isoquinolin-1-yl, etc.) was developed with metal-free ceramic boron carbon nitrides (BCN). With visible light irradiation, BCN oxidizes carboxylic acids to give carbon-centered radicals, which were trapped by hydrogen atom donors or employed in the construction of the carbon-carbon bond. In this system, both (hetero)aromatic and aliphatic acids proceed through the decarboxylation smoothly; and C-H, C-D, and C-C bonds are formed in moderate to high yields (35 examples, yield up to 93%). Control experiments support a radical process, and isotopic experiments show that methanol is employed as the hydrogen atom donor. Recycling tests and a gram-scale reaction elucidate the practicability of the heterogeneous ceramic BCN photoredox system. It provides an alternative to homogeneous catalysts in the valuable carbon radical intermediates formation. Moreover, the metal-free system is also applicable to late-stage functionalization of anti-inflammatory drugs, such as naproxen and ibuprofen, which enrich the chem. toolbox.

ACS Catalysis published new progress about Aromatic hydrocarbons 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 In Synthesis of 151-10-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Shi, Jiale published the artcileMetal-Free Heterogeneous Semiconductor for Visible-Light Photocatalytic Decarboxylation of Carboxylic Acids, Recommanded Product: 4-Methoxyphenylacetic acid, the main research area is aliphatic hetero aromatic arene preparation; hetero aromatic aliphatic acid hydrodecarboxylation photocatalyst; deuteride aliphatic hetero aromatic arene preparation; aromatic hetero aliphatic acid decarboxylative deuteration photocatalyst; diaryl methane preparation; carboxylic acid hetero aryl cyanide decarboxylative arylation photocatalyst.

A suitable protocol for the photocatalytic decarboxylation of carboxylic acids RC(O)OH (R = 3,5-dimethylphenyl, 2-(4-methylphenyl)ethyl, diphenylmethyl, isoquinolin-1-yl, etc.) was developed with metal-free ceramic boron carbon nitrides (BCN). With visible light irradiation, BCN oxidizes carboxylic acids to give carbon-centered radicals, which were trapped by hydrogen atom donors or employed in the construction of the carbon-carbon bond. In this system, both (hetero)aromatic and aliphatic acids proceed through the decarboxylation smoothly; and C-H, C-D, and C-C bonds are formed in moderate to high yields (35 examples, yield up to 93%). Control experiments support a radical process, and isotopic experiments show that methanol is employed as the hydrogen atom donor. Recycling tests and a gram-scale reaction elucidate the practicability of the heterogeneous ceramic BCN photoredox system. It provides an alternative to homogeneous catalysts in the valuable carbon radical intermediates formation. Moreover, the metal-free system is also applicable to late-stage functionalization of anti-inflammatory drugs, such as naproxen and ibuprofen, which enrich the chem. toolbox.

ACS Catalysis published new progress about Aromatic hydrocarbons Role: SPN (Synthetic Preparation), PREP (Preparation). 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

Mastuo, Kasumi published the artcileNickel-Catalyzed Hydrodeoxygenation of Aryl Sulfamates with Alcohols as Mild Reducing Agents, Application In Synthesis of 151-10-0, the main research area is aromatic hydrocarbon preparation; aryl sulfamate hydrodeoxygenation nickel catalyst.

The nickel-catalyzed hydrodeoxygenation of aryl sulfamates ROS(O)2R1 [R = 2-propanoylbenzen-1-yl, 1-ethyl-1H-indol-4-yl, 4-(4-acetylpiperazin-1-yl)benzen-1-yl, etc.; R1 = dimethylaminyl, piperidin-1-yl, bis(propan-2-yl)aminyl, etc.] has been developed with alcs. as mild reductants. A variety of functional groups and heterocycles were tolerated in this reaction system to give the desired products RH in high yields. In addition, the gram-scale process and stepwise cine-substitution were also achieved with high efficiency.

Synthesis published new progress about Aromatic hydrocarbons 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 In Synthesis of 151-10-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Maddila, Surya Narayana published the artcileAn eco-friendly approach for synthesis of novel substituted 4H-chromenes in aqueous ethanol under ultra-sonication with 94% atom economy, Quality Control of 86-51-1, the main research area is chromene preparation ultrasonication green chem; aryl aldehyde active methylene compound dimedone three component cyclization.

An operational approach for synthesis of eleven substituted 4H-chromene derivatives I (R = 2-CH3OC6H4, 4-CF3C6H4, pyridin-3-yl, etc.; R1 = Me, Et) by one-pot, three-component reaction of aromatic aldehydes RCHO, Me/Et cyanoacetate and 5,5 di-Me 1,3-cyclohexadione through ultrasound irradiation, in the presence of aqueous ethanol under catalyst-free condition is reported. Different spectral methods, including 1H, 13C and 15N NMR and HRMS were utilized to characterize the new mols. Benefits of the eco-friendly method are fast reaction (10 min), excellent yields (92-98%), no column chromatog. and no byproducts. Reaction offers 94% atom economy and 100% carbon capture.

Journal of Molecular Structure published new progress about Aryl aldehydes, heteroaryl 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, Quality Control of 86-51-1.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem