Tag: M.W=150-200

Xie, Hongling; Yang, Zhenkun; Tang, Luning; Han, Zhengyu; Sun, Jianwei; Huang, Hai published the artcile< Construction of nine-membered N,N,O-heterocycles via Pd-catalyzed [6+3] dipolar cycloaddition>, SDS of cas: 90806-58-9, the main research area is vinyl oxetane iminoisoquinolinium ylide palladium catalyst dipolar cycloaddition; tetrahydrooxadiazoninoisoquinoline preparation.

A new approach for the synthesis of 9-membered N,N,O-heterocycles by Pd-catalyzed [6+3] dipolar cycloaddition of N-iminoisoquinolinium ylides and 2-vinyl oxetanes was developed. The scope of this cycloaddition was demonstrated with 28 examples. This was another important synthetic strategy for medium-sized rings by employing N-iminoisoquinolinium ylides as ternary synthons.

Chemical Communications (Cambridge, United Kingdom) published new progress about Allylic alcohols Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 90806-58-9 belongs to class isoquinoline, and the molecular formula is C10H9NO, SDS of cas: 90806-58-9.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Xiong, Qian; Dong, Shunxi; Chen, Yushuang; Liu, Xiaohua; Feng, Xiaoming published the artcile< Asymmetric synthesis of tetrazole and dihydroisoquinoline derivatives by isocyanide-based multicomponent reactions>, Formula: C10H9NO, the main research area is alkylidene malonate diastereoselective enantioselective annulation isoquinoline isocyanide; imino dihydro pyrroloisoquinoline dicarboxylate enantioselective diastereoselective preparation; isocyanide trimethylsilyl azide alkylidene malonate enantioselective heterocyclization; tetrazole diester enantioselective preparation.

Herein, several isocyanide-based multicomponent reactions based on enantioselective addition of simple isocyanides to C=C bonds were realized in the presence of a chiral Mg(II)-N,N’-dioxide catalyst. Three- or four-component reactions of an isocyanide, TMSN3, and an (alkylidene)malonate could be precisely controlled by modulating reaction conditions to afford two types of enantioenriched tetrazole derivatives in moderate to high yields. Possible catalytic cycles via a key zwitterionic intermediate, and the vital roles of H2O or excess ligand are provided based on control experiments Moreover, taking advantage of this zwitterionic intermediate as a 1,3-dipole, an enantioselective dearomative [3+2] annulation reaction of nonactivated isoquinolines is achieved, furnishing chiral dihydropyrrolo[2,1-a]isoquinolines in good to excellent results.

Nature Communications published new progress about Diastereoselective synthesis. 90806-58-9 belongs to class isoquinoline, and the molecular formula is C10H9NO, Formula: C10H9NO.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Fuse, Hiromu; Irie, Yu; Fuki, Masaaki; Kobori, Yasuhiro; Kato, Kosaku; Yamakata, Akira; Higashi, Masahiro; Mitsunuma, Harunobu; Kanai, Motomu published the artcile< Identification of a Self-Photosensitizing Hydrogen Atom Transfer Organocatalyst System>, Product Details of C10H9NO, the main research area is aldehyde isoquinoline organocatalyst photochem hydroxyalkylation C H activation; isoquinolylmethanol preparation; alc isoquinoline organocatalyst photochem alkylation C H activation; alkylisoquinoline preparation.

Organocatalyst systems to promote the cleavage of stable C-H bonds, such as formyl, α-hydroxy and benzylic C-H bonds, through a hydrogen atom transfer (HAT) process without the use of exogenous photosensitizers have been developed. An electronically tuned thiophosphoric acid, 7,7′-OMe-TPA, were assembled with substrate or co-catalyst N-heteroaromatics through hydrogen bonding and π-π interactions to form electron donor-acceptor (EDA) complexes. Photoirradiation of the EDA complex induced stepwise, sequential single-electron transfer (SET) processes to generate a HAT-active thiyl radical. The first SET were from the electron-rich naphthyl group of 7,7′-OMe-TPA to the protonated N-heteroaromatics and the second proton-coupled SET (PCET) from the thiophosphoric acid moiety of 7,7′-OMe-TPA to the resulting naphthyl radical cation. Spectroscopic studies and theor. calculations characterized the stepwise SET process mediated by short-lived intermediates. This organocatalytic HAT system were applied to four different carbon-hydrogen (C-H) functionalization reactions, hydroxyalkylation and alkylation of N-heteroaromatics, acceptorless dehydrogenation of alcs. and benzylation of imines, with high functional group tolerance.

Journal of the American Chemical Society published new progress about Alcohols Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 90806-58-9 belongs to class isoquinoline, and the molecular formula is C10H9NO, Product Details of C10H9NO.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Li, Hong-Liang; Yang, Deng-Feng; Jing, Hua-Qing; Antilla, Jon C.; Kuninobu, Yoichiro published the artcile< Palladium-Catalyzed Enantioselective C(sp3)-H Arylation of 2-Propyl Azaaryls Enabled by an Amino Acid Ligand>, Related Products of 90806-58-9, the main research area is propyl azaaryl enantioselective arylation amino acid ligand palladium catalyst.

A palladium(II)-catalyzed enantioselective arylation of unbiased secondary C(sp3)-H bonds was developed. The enantioselectivity was controlled by the combination of a pyridyl or isoquinolinyl directing group and an amino acid, N-Boc-2-pentyl proline. A variety of 2-Pr azaaryls and biaryl iodides were employed to provide arylated products in moderate to good yields (up to 82%) with high enantioselectivities (up to 93:7 er). This reaction is a rare example of an amino-acid-enabled enantioselective acyclic methylene C(sp3)-H arylation. Furthermore, the reaction proceeded with high enantioselectivity even on a gram scale, and the product was transformed to a 5,6,7,8-tetrahydroisoquinoline bioactive mol. Kinetic isotope effect (KIE) experiments indicated that C-H activation is the rate-determining step for the enantioselective C(sp3)-H arylation.

Organic Letters published new progress about Aryl halides Role: RCT (Reactant), RACT (Reactant or Reagent). 90806-58-9 belongs to class isoquinoline, and the molecular formula is C10H9NO, Related Products of 90806-58-9.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Miao, Hongjie; Bai, Xuguan; Wang, Lele; Yu, Junhui; Bu, Zhanwei; Wang, Qilin published the artcile< Diastereoselective construction of cage-like and bridged azaheterocycles through dearomative maximization of the reactive sites of azaarenes>, Product Details of C10H9NO, the main research area is cage like bridged azaheterocycle preparation diastereoselective; pyridinium quinolinium isoquinolinium diazapentadienium salt dearomatization.

A highly diastereoselective multicomponent dearomative multifunctionalization of N-alkyl activated azaarenes with 1,5-diazapentadienium salts has been developed, which not only represented a significant advance in maximum utilization of the reactive sites of azaarenes, but also provided a convenient and robust approach to access structurally rigid and synthetically challenging cage-like and bridged azaheterocycles. As an important complement, author also realized the dearomative multi-functionalization of N-aryl azaarenes through an in situ activation strategy. Moreover, the workup-directed selective tri- and bi-functionalization of isoquinolinium salts have been accomplished.

Organic Chemistry Frontiers published new progress about Bridged heterocyclic compounds Role: SPN (Synthetic Preparation), PREP (Preparation). 90806-58-9 belongs to class isoquinoline, and the molecular formula is C10H9NO, Product Details of C10H9NO.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Zhang, Dong; Cai, Jinlin; Du, Jinze; Wang, Qingdong; Yang, Jinming; Geng, Rongqing; Fang, Zheng; Guo, Kai published the artcile< Electrochemical-Oxidation-Promoted Direct N-ortho-Selective Difluoromethylation of Heterocyclic N-Oxides>, Computed Properties of 90806-58-9, the main research area is difluoromethyl quinoline isoquinoline oxide preparation green chem; isoquinoline quinoline oxide electrochem oxidation ortho selective difluoromethylation.

An efficient and green electrochem. N-ortho-selective difluoromethylation method of various quinoline and isoquinoline N-oxides has been developed. In this method sodium difluoromethanesulfinate (HCF2SO2Na) was used as the source of difluoromethyl moiety and various N-ortho-selective difluoromethylation quinolines and isoquinolines N-oxides were obtained in good to excellent yield under constant current. In addition, the reaction was easy to scale up and maintains good yields. Preliminary mechanism studies suggested that the reaction has underwent a free radical addition and hydrogen elimination pathway.

Organic Letters published new progress about Difluoromethylation. 90806-58-9 belongs to class isoquinoline, and the molecular formula is C10H9NO, Computed Properties of 90806-58-9.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Jiang, Peng-Ying; Fan, Kai-Fang; Li, Shaoyu; Xiang, Shao-Hua; Tan, Bin published the artcile< Metal-free oxidative cross-coupling enabled practical synthesis of atropisomeric QUINOL and its derivatives>, Safety of 5-Methoxyisoquinoline, the main research area is atropisomeric QUINOL chemoselective preparation; isoquinoline naphthol oxidative cross coupling metal free; QUINOL oxide enantioselective preparation; racemic QUINOL oxide kinetic resolution NHC catalyst.

A direct oxidative cross-coupling reaction between isoquinolines and 2-naphthols, providing a straightforward and scalable route to acquire privileged QUINOL scaffolds I [R1 = H, 7-Me, 6-Ph, etc.; R2 = H, 3-Me, 5-Br, etc.] in a metal-free manner was reported. Moreover, a NHC-catalyzed kinetic resolution of QUINOL N-oxides with high selectivity factor was established to access two types of promising axially chiral Lewis base catalysts in optically pure forms. The utility of this methodol. was further illustrated by facile transformations of products into QUINAP, an iconic ligand in asym. catalysis.

Nature Communications published new progress about Atom economy. 90806-58-9 belongs to class isoquinoline, and the molecular formula is C10H9NO, Safety of 5-Methoxyisoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Zhang, Yilan; Yue, Xiaoguang; Zhu, Jiashun; Peng, Jiehai; Zhou, Chenxin; Wu, Jirong; Zhang, Pengfei published the artcile< Visible light-induced hydroxymethylation and formylation of (iso)quinolines with alcohols>, Product Details of C10H9NO, the main research area is quinoline alc photochem hydroxymethylation; hydroxymethyl quinoline preparation; isoquinoline alc photochem formylation; formylquinoline preparation.

A mild and effective hydroxymethylation and formylation of quinolines or isoquinolines with methanol in the absence of external acids and transition metals was described using the coupling reaction promoted by PhIFA and visible light. A variety of substituted quinolines or isoquinolines proceed the reaction smoothly, providing the corresponding products in moderate-to-good yields. Control experiments indicated that a radical pathway is involved in this transformation.

Molecular Catalysis published new progress about Formylation (photochem.). 90806-58-9 belongs to class isoquinoline, and the molecular formula is C10H9NO, Product Details of C10H9NO.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Kimura, Hidenori; Suda, Hitoshi; Kassai, Momoe; Endo, Mika; Deai, Yoko; Yahata, Masahiro; Miyajima, Mari; Isobe, Yoshiaki published the artcile< N-(6-phenylpyridazin-3-yl)benzenesulfonamides as highly potent, brain-permeable, and orally active kynurenine monooxygenase inhibitors>, Electric Literature of 721401-43-0, the main research area is Huntington disease pyridazinylsulfonamide kynurenine monooxygenase inhibitor neuroprotection; 3-HK; BBB; Brain permeable; Huntington’s disease; KMO; KYNA; Kynurenine monooxygenase; Kynurenine pathway; R6/2.

Huntington’s disease (HD) is one of the serious neurodegenerative diseases and no disease modifiers are available to date. The correction of unbalanced kynurenine pathway metabolites may be useful to treat disease progression and kynurenine monooxygenase (KMO) is considered an ideal drug target. A couple of KMO inhibitors have been reported, but their brain permeability was very poor. We found pyridazinylsulfonamide as a novel lead compound, and it was optimized to the brain-permeable and highly potent KMO inhibitor 12, which was equipotent with CHDI-340246 and superior to CHDI-340246 in terms of brain penetration. Compound 12 was effective in R6/2 mice (HD model mice), i.e. neuroprotective kynurenic acid was increased, whereas neurotoxic 3-hydroxykynurenine was suppressed. In addition, impaired cognitive function was improved. Therefore, the brain-permeable KMO inhibitor was considered to be a disease modifier for HD treatment.

Bioorganic & Medicinal Chemistry Letters published new progress about Ataxia. 721401-43-0 belongs to class isoquinoline, and the molecular formula is C9H8BNO2, Electric Literature of 721401-43-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Schifferer, Lukas; Garcia Mancheno, Olga published the artcile< Metal- and Solvent-Free, One-Pot Synthesis of 3-Unsubstituted Benzoindolizines>, Recommanded Product: 5-Methoxyisoquinoline, the main research area is benzoindolizine preparation metal solvent free isoquinoline propiolic ester.

A simple one-pot, solvent-free method for the synthesis of 3-unsubstituted indolizines is presented. Conversely to the output from standard classical cycloaddition approaches, an unconventional connectivity is achieved with excellent chemoselectivity under neat conditions without requiring any metal catalyst or addnl. additive. Hence, various abundant (iso)quinolines and propiolic esters were transformed into the corresponding benzoindolizines in synthetically useful yields. This straightforward and simplistic transformation expands the synthetic tool kit for the preparation of valuable 3-unsubstituted indolizines, which have been shown to be highly versatile synthetic intermediates with a broad bioactivity spectrum.

European Journal of Organic Chemistry published new progress about Alkynes, α- Role: RCT (Reactant), RACT (Reactant or Reagent) (esters). 90806-58-9 belongs to class isoquinoline, and the molecular formula is C10H9NO, Recommanded Product: 5-Methoxyisoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem