Month: November 2022

Oboudatian, Hourieh Sadat published the artcileSilica nanospheres KCC-1 as a good catalyst for the preparation of 2-amino-4H-chromenes by ultrasonic irradiation, Computed Properties of 86-51-1, the main research area is aldehyde condensation malononitrile naphthalenediol ultrasound fibrous nanosilica sphere catalyst; chromene bis amino nitrile preparation.

Fibrous nano-silica sphere (KCC-1) has appeared as a good and efficient catalyst for ultrasonic irradiation conditions in chem. reactions. This catalyst has the unique properties such as a fibrous surface morphol., high surface area and high mech. stability. Morphol., structure, and composition of the fibrous nano-silica sphere were described by N2 adsorption-desorption anal., SEM (SEM), transmission electron microscopy (TEM), X-ray powder diffraction (XRD), thermogravimetric anal. (TGA) and Fourier-transform IR spectroscopy (FT-IR). In this work, KCC-1@NH2 nanosilica was used as a basic catalyst for the preparation of chromenes I [R = Ph, 3-HOC6H4, 2,3-(MeO)2C6H3, etc.] from 1,5-naphthalenediol, malononitrile and the corresponding aldehydes RCHO under ultrasonic irradiation conditions for the first time. The recyclability, nontoxicity and high stability of the catalyst, combined with low reaction times and excellent yields, make the present protocol very useful for the synthesis of the title products under ultrasonic conditions. The structures of the products were confirmed via 1H NMR, 13C NMR, and FT-IR anal.

Scientific Reports published new progress about Benzaldehydes 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, Computed Properties of 86-51-1.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Shabalala, Nhlanhla Gracious published the artcileAn Efficient and Sustainable Protocol for the Synthesis of Poly-Functionalized-Pyran Derivatives under Ultrasound Irradiation, Safety of 2,3-Dimethoxybenzaldehyde, the main research area is benzaldehyde malononitrile dimedone three component one pot reaction ultrasonication; phenyl tetrahydrobenzopyran preparation green chem; barbituric acid benzaldehyde malononitrile three component one pot ultrasonication; tetrahydropyranopyrimidine phenyl preparation green chem.

A highly efficient and catalyst-free green synthetic protocol was developed for the synthesis of two series of poly-functionalized pyran derivatives I [R = 2-Cl, 3-OH-4-MeO, 2,4,6-tri-MeO, etc.] and II [R1 = 2-Cl, 2-NO2, 2-Cl-6-F, 2-CF3, 2-Br] via the one-pot reaction of benzaldehydes, malononitrile and either dimedone or 1,3-di-Me barbituric acid with EtOH: H2O (1:1 volume/volume) as solvent under ultrasound irradiation Excellent yields (90-99%) of desired pyran derivatives I and II were obtained for rapid reaction time 5 min. The structural features of the synthesized compounds I and II were fully characterized by spectroscopic techniques (IR, HRMS 1H and 13C NMR). A simple workup, clean reaction profile, short reaction times, excellent yields, 95% atom economy, and 100% carbon efficiency are the benefits of the proposed protocol. In addition, the circumvention of the chromatog. separations is the further advantage of the procedure.

Polycyclic Aromatic Compounds published new progress about Benzaldehydes 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, Safety of 2,3-Dimethoxybenzaldehyde.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Babaei, Pouria published the artcileL-proline covered N doped graphene quantum dots modified CuO/ZnO hexagonal nanocomposite as a robust retrievable catalyst in synthesis of substituted chiral 2-amino-4H-chromenes, COA of Formula: C9H10O3, the main research area is proline functinalized copper zinc oxide nanoparticle preparation surface structure; benzaldehyde dimedone malononitrile copper zinc oxide nanocatalyst three component; phenyl amino oxochromene carbonitrile preparation microwave irradation green chem; malononitrile benzaldehyde hydroxycoumarine copper zinc oxide nanocatalyst three component; amino phenyl oxopyranochromene carbonitrile preparation microwave irradation green chem.

L-proline assisted CuO/ZnO@N-GQDs hexagonal nanocomposites as a robust recyclable nanocatalyst in multicomponent reactions for the preparation of 2-amino-4H-chromenes. As-prepared CuO/ZnO@N-GQDs@L-proline nanocatalyst was investigated by High-resolution Transmission electron microscope , Transmission electron microscope, Field emission SEM, Brunauer-Emmett-Teller (BET), Energy-dispersive X-ray spectroscopy, Fourier transform IR spectroscopy, Thermogravimetric anal., and X-ray diffraction anal.. High atom economy (95%), recyclability catalyst (8 runs), avoided the utilization of further reagents such as additives, and excellent yield of products (80-94%) are a few vital highlights of this method.

Materials Chemistry and Physics published new progress about Benzaldehydes 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, COA of Formula: C9H10O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Maddila, S. published the artcileV-CaHAp as a recyclable catalyst for the green multicomponent synthesis of benzochromenes, COA of Formula: C9H10O3, the main research area is benzochromene preparation green chem; naphthol benzaldehyde malononitrile multicomponent condensation vanadium calcium hydroxyapatite catalyst.

A simple and efficient one-pot method has been developed for the synthesis of benzochromenes I [R = 2-Cl, 4-CH3CH2, 2,5-(OCH3)2, etc.], using V-CaHAp as a heterogeneous catalyst by the condensation of aldehydes RC6H4CHO, β-naphthol and malononitrile in ethanol as solvent at room temperature for 20 min. The reaction, with this catalyst is carried out under mild reaction conditions with very good to excellent yields (89-98%). The material can be recycled very easily and reused for at least 6 runs without substantial loss in activity, which makes this methodol. environmentally benign. A feasible and cost-effective synthesis by using non-toxic materials and minimal catalyst, which is easy to handle has been achieved.

Arabian Journal of Chemistry published new progress about Benzaldehydes 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, COA of Formula: C9H10O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Mohamadpour, Farzaneh published the artcileSynthesis of Pyran-Annulated Heterocyclic Systems Catalyzed by Theophylline as a Green and Bio-Based Catalyst, Safety of 2,3-Dimethoxybenzaldehyde, the main research area is tetrahydrobenzopyran preparation green chem; aryl aldehyde malononitrile dimedone tandem theophylline biocatalyst; pyranopyrimidinone preparation green chem; malononitrile aryl aldehyde barbituric acid tandem theophylline biocatalyst; dihydropyranopyrazole preparation green chem; ethyl acetoacetate aldehyde hydrazine hydrate malononitrile tandem theophylline biocatalyst.

A green synthetic route to the convenient preparation of tetrahydrobenzo[b]pyrans I [R1 = Ph, 4-O2NC6H4, 2,3-(H3CO)2C6H3, etc.], pyrano[2,3-d]pyrimidinones II (R2 = Ph, 2,4-Cl2C6H3, 2-O2NC6H4, etc.; R3 = H, Me) and dihydropyrano[2,3-c]pyrazoles III (R4 = Ph, 3-O2NC6H4, 2-OHC6H4, etc.) scaffolds have been developed using theophylline as a green and bio-based catalyst via tandem Knoevenagel-Michael cyclocondensation reaction in aqueous/ethanol media. All reactions are completed in short period of times and the products are obtained in excellent yields. The salient features of this environmentally friendly approach are green and bio-based catalyst, straightforward work-up with no column chromatog. separation, one-pot procedures, economical and clean synthesis, avoidance of toxic organic solvents and high atom-economy.

Polycyclic Aromatic Compounds published new progress about Benzaldehydes 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, Safety of 2,3-Dimethoxybenzaldehyde.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Shirzaei, Farhad published the artcileOne-Pot Synthesis of New Chromeno[1,6]naphthyridine Derivatives Catalyzed by a Basic Ionic Liquid, [HO-CH2-CH2-NH3+][HCOO-], Quality Control of 86-51-1, the main research area is chromenonaphthyridine preparation green chem; benzaldehyde malononitrile hydroxyacetophenone multicomponent condensation ionic liquid catalyst.

The authors report a one-pot, efficient, pseudo-four-component condensation of aromatic aldehydes R1CHO [R1 = Ph, 4-FC6H4, 2,3,4-(MeO)3C6H2, etc.], malononitrile, 2′-hydroxyacetophenone derivatives 2-HO-4-R2C6H3C(O)CH3 (R2 = H, OH) in the presence of a reusable basic ionic liquid, [HO-CH2-CH2-NH3+][HCOO-], as catalyst for the synthesis of chromeno[1,6]naphthyridine derivatives I in water as a green solvent at reflux conditions. The method has several advantages such as good yields, short reaction times, and a simple work-up procedure.

ChemistrySelect published new progress about Benzaldehydes 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

Lichitsky, Boris V. published the artcileBenzimidazolyl-pyrazolo[3,4-b]pyridinones – selective inhibitors of MOLT-4 leukemia cell growth and sea urchin embryo spiculogenesis: Target quest., Safety of 2,3-Dimethoxybenzaldehyde, the main research area is benzimidazolylpyrazolopyridinone preparation SAR human; MOLT4 leukemia cell growth spiculogenesis inhibitor; MOLT-4; benzimidazolyl-pyrazolo[3,4-b]pyridinone; cytotoxicity; sea urchin embryo; spiculogenesis.

1,3-Substituted pyrazolo[3,4-b]pyridinones were synthesized by a three-component condensation of Meldrum’s acid with aryl aldehydes and 1,3-substituted 5-aminopyrazoles. Their biol. activity was evaluated using the in vivo phenotypic sea urchin embryo assay and the in vitro cytotoxicity screen against human cancer cell lines. In the sea urchin embryo model, 1-benzimidazolyl-pyrazolo[3,4-b]pyridinones caused inhibition of hatching and spiculogenesis at submicromolar concentrations These compounds also selectively and potently inhibited growth of the MOLT-4 leukemia cell line. Subsequent structure-activity relationship studies determined the benzimidazolyl fragment as an essential pharmacophore for both effects. A preliminary QSAR target identification search did not result in tangible leads. Attempts to prepare a relevant photoaffinity probe that retained potency in both assays were not successful. 1-Benzimidazolyl-pyrazolo[3,4-b]pyridinones were further characterized for their activity in a wild type vs Notch-mutant leukemia cell lines, and in in vitro panels of kinases and matrix metalloproteinases. Using a series of diverse modulators of spiculogenesis as standards, multiple signaling networks including Notch, Wnt/-catenin, receptor tyrosine kinases (VEGF/VEGFR, FGF/FGFR), PI3K, and Raf-MEK-ERK were excluded as possible targets of 1-benzimidazolyl-pyrazolo[3,4-b]pyridinones. On the other hand, matrix metalloproteinase-9/hatching enzyme was identified as one potential target.

ACS Combinatorial Science published new progress about Benzaldehydes 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, Safety of 2,3-Dimethoxybenzaldehyde.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Feng, Guangshou published the artcileDecarboxylative C-C and C-N Bond Formation by Ligand-Accelerated Iron Photocatalysis, Application of 4-Methoxyphenylacetic acid, the main research area is unsaturated dinitrile carboxylic acid iron catalyst photochem decarboxylative addition; azodocarboxylate carboxylic acid iron catalyst photochem decarboxylative addition.

A mild and effective protocol for decarboxylative C-C and C-N bond formation through iron photocatalysis was achieved. The carboxylic acids underwent radical decarboxylation in the presence of Fe2(SO4)3 and di-(2-picolyl)amine under visible light irradiation The resulting alkyl radicals then reacted with Michael acceptors or azodicarboxylates to furnish the adducts.

European Journal of Organic Chemistry published new progress about Azo compounds 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

Gomez-Angel, Andres R. published the artcileSynthesis and functionalization of a bifunctional normorphan 3D building block for medicinal chemistry, COA of Formula: C8H10O2, the main research area is bifunctional normorphan 3D building block diastereoselective preparation.

A multi-gram-scale synthetic route to a novel, bifunctional normorphan 3D building block bearing orthogonally reactive vinyl MIDA boronate and N-2,4-dimethoxybenzyl (DMB) amide functional handles I was developed. Synthetic manipulation at each of the functional handles was demonstrated including Suzuki-Miyaura cross-coupling, exo-diastereoselective hydrogenation, N-DMB group removal and lactam reduction Normorphan cores derived from the building block satisfied AstraZeneca’s ‘rule of 2’ for building blocks and had a high fraction of sp3 hybridized carbon atoms (Fsp3). A virtual lead-like library of 344 compounds derived from the building block had attractive lead-like properties. The 3D building block was commercialised by Redbrick Mol. and was available for purchase.

Tetrahedron published new progress about Aryl bromides Role: RCT (Reactant), RACT (Reactant or Reagent). 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, COA of Formula: C8H10O2.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Lekky, Anek published the artcileStereoselective Convergent Synthesis of Tetrahydro-5H-benzo[c]fluorene via Nine-Membered Ring-Closing Metathesis and Transannular Acid-Mediated Cyclization/Nucleophilic Addition, Related Products of isoquinoline, the main research area is tetrahydrobenzofluorene stereoselective preparation ring closing metathesis transannular acid cyclization.

The diene Me ethers or acetates, constructed from the Li-Br exchange/addition reactions of 2-vinylbenzaldehydes and 2-(but-3-en-1-yl)bromoarenes followed by etherification or acetylation of the corresponding alcs., smoothly underwent the ring-closing metathesis (RCM) by using Hoveyda-Grubbs II as a catalyst to provide the corresponding benzannulated (Z)-cyclononenes as single products in good yields (up to 75%). The ensuing one-pot acid-mediated transannular cyclization/nucleophilic addition at C7 furnished the corresponding tetrahydro-5H-benzo[c]fluorenes as single stereoisomers with the exclusive cis stereochem. at the ring junction (C5-C6) and trans at the site of nucleophilic attack (C6-C7) on the three contiguous stereogenic centers in good to excellent yield (up to 94%). The developed strategy was general; the reaction conditions were compatible with hydride, azide, and electron-rich aromatics as nucleophiles. In addition, various methoxylated benzannulated cyclononene acetates could be employed as substrates. Thus, tetrahydro-5H-benzo[c]fluorenes could be prepared in four steps from appropriately substituted bromoarenes and benzaldehydes in good yields (up to 56%) with excellent stereo- and regio-control.

Journal of Organic Chemistry published new progress about Aryl bromides Role: RCT (Reactant), RACT (Reactant or Reagent). 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Related Products of isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem