Month: November 2022

Wang, Qian published the artcileCopper-Catalyzed Modular Assembly of Polyheterocycles, Name: 2-Bromo-4-methoxybenzoic acid, the main research area is indenoisoquinolinone preparation; indenedione benzamide preparation cyclization copper catalyst; carboxylic acid isocyanide aldehyde ammonia Ugi reaction.

Easy operation, readily accessible starting materials, and short synthesis of the privileged scaffold indeno[1,2-c]isoquinolinones I (R1 = H, 3-MeO, 2-Me, 2-NO2, etc.; R2 = H, Me, cyclopentyl, 4-chlorophenyl, etc.; R3 = tert-Bu, benzyl, 2-methoxy-2-oxoethyl, 2-ethylphenyl, etc.; R4 = H, 8,9-dimethoxy) were achieved by an multicomponent reaction (MCR)-based protocol via an ammonia-Ugi-four component reaction (4CR)/copper-catalyzed annulation sequence. The optimization and scope and limitations of this short and general sequence are described. The methodol. allows an efficient construction of a wide variety of indenoisoquinolinones I in just two steps.

Journal of Organic Chemistry published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 74317-85-4 belongs to class bromides-buliding-blocks, name is 2-Bromo-4-methoxybenzoic acid, and the molecular formula is C8H7BrO3, Name: 2-Bromo-4-methoxybenzoic acid.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Wang, Qian published the artcileIsoquinolone-4-Carboxylic Acids by Ammonia-Ugi-4CR and Copper-Catalyzed Domino Reaction, Category: bromides-buliding-blocks, the main research area is carboxy isoquinolone preparation green chem; benzoylaminoacetamide preparation green chem keto ester heterocyclization copper catalyst; halobenzoic acid aldehyde isocyanide ammonia multicomponent Ugi reaction.

Highly substituted isoquinolone-4-carboxylic acid I (R1 = H, 7-Me, 6-OMe, 6-NO2, etc.; R2 = H, Me, cyclopentyl, Ph, etc.; R3 = tert-Bu, 2-ethylphenyl, cyclopropylmethyl, benzyl, etc.; R4 = Me, iso-Pr, Pr, phenyl) is an important bioactive scaffold; however, it is challenging to access it in a general and short way. A Cu-catalyzed cascade reaction was successfully designed involving the Ugi postcyclization strategy by using ammonia and 2-halobenzoic acids 2-X-(R5)C6H3C(O)OH (R5 = H, 4-OMe, 5-Me, etc.; X = Br, I) as crucial building blocks. Privileged polysubstituted isoquinolin-1(2H)-ones I were constructed in a combinatorial format with generally moderate to good yields. The protocol, with a ligand-free catalytic system, shows a broad substrate scope and good functional group tolerance toward excellent mol. diversity. Free 4-carboxy-isoquinolone is now for the first time generally accessible by a convergent multicomponent reaction protocol.

Journal of Organic Chemistry published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 74317-85-4 belongs to class bromides-buliding-blocks, name is 2-Bromo-4-methoxybenzoic acid, and the molecular formula is C8H7BrO3, Category: bromides-buliding-blocks.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Xu, Liangxuan published the artcileMomentary click nitrile synthesis enabled by an aminoazanium reagent, Recommanded Product: 1-Bromo-4-fluoro-2-methylbenzene, the main research area is nitrile preparation selective Schmidt reaction aminoazanium reagent.

Momentary and selective Schmidt-type nitrile synthesis was reported. The success of this achievement was ascribed to the employment of the stable and robust aminoazanium reagent H2N-DABCO. A broad range of functionalized aldehydes were efficiently converted to nitriles within 5 min at room temperature in air. The robustness and speed of the protocol allow the CHO group to be regarded as a CN equivalent in organic synthesis. Moreover, the synthetic advantage of this developed protocol is further highlighted via the direct cyanation of a diversity of aldehyde precursors (carboxylic acids, aromatics, aryl halides, alkenes and alkynes) in a cyanide-free process. Addnl., this protocol can not only be used for rapid access to a wide range of ligands and material precursors, but it can also be used in the late-stage modification of complex bioactive mols.

Organic Chemistry Frontiers published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 452-63-1 belongs to class bromides-buliding-blocks, name is 1-Bromo-4-fluoro-2-methylbenzene, and the molecular formula is C7H6BrF, Recommanded Product: 1-Bromo-4-fluoro-2-methylbenzene.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Ambartsumova, R. F. published the artcileOn interaction of 2-aminobenzothiazoles with halohydrins, Application of 1-Bromo-3-(3-bromopropoxy)propane, the main research area is benzothiazolamine halohydrin alkylation oxidation dimerization; iminobenzothiazoline preparation; benzothiazolylideneammonium chloride preparation.

On heating on a boiling water bath, 2-aminobenzothiazoles react with Cl(CH2)2OH to yield mainly the corresponding 3-(2-chloroethyl)benzothiazolin-2-ones. Reducing the reaction temperature increases the fraction of 2-imino-3-(2-hydroxyethyl)benzothiazolines. In both instances, formation of bis[3-(2-hydroxyethyl)benzothiazol-2-ylidene]ammonium chlorides is observed The reaction of 2-aminobenzothiazole with Br(CH2)3OH gives only the corresponding amino alcs. The anomalous products from the reaction of β-chloroethyl derivatives of benzothiazolinones result from a dominating side-reaction of the starting 2-aminobenzothiazoles with the Cl(CH2)2OH thermolysis products that are formed on boiling.

Chemistry of Heterocyclic Compounds (New York)(Translation of Khimiya Geterotsiklicheskikh Soedinenii) published new progress about Halohydrins Role: RCT (Reactant), RACT (Reactant or Reagent). 58929-72-9 belongs to class bromides-buliding-blocks, name is 1-Bromo-3-(3-bromopropoxy)propane, and the molecular formula is C6H12Br2O, Application of 1-Bromo-3-(3-bromopropoxy)propane.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Cabre, Albert published the artcileHighly Enantioselective Iridium-Catalyzed Hydrogenation of 2-Aryl Allyl Phthalimides, Recommanded Product: (R)-tert-Butyl (2-(4-bromophenyl)propyl)carbamate, the main research area is beta aryl methyl amine preparation enantioselective; aryl allyl phthalimide hydrogenation iridium catalyst.

The iridium-catalyzed asym. hydrogenation of 2-aryl allyl phthalimides to afford enantioenriched β-aryl-β-Me amines is presented. Recently developed Ir-MaxPHOX catalysts are used for this enantioselective transformation. The mild reaction conditions and the feasible removal of the phthalimido group makes this catalytic method easily scalable and of great interest to afford chiral amines. The importance of this new methodol. is exemplified by the formal synthesis of (R)-Lorcaserin, OTS514, and enantiomerically enriched 3-Me indolines.

Organic Letters published new progress about Amines Role: SPN (Synthetic Preparation), PREP (Preparation). 211315-53-6 belongs to class bromides-buliding-blocks, name is (R)-tert-Butyl (2-(4-bromophenyl)propyl)carbamate, and the molecular formula is C14H20BrNO2, Recommanded Product: (R)-tert-Butyl (2-(4-bromophenyl)propyl)carbamate.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Kulyabin, Pavel S. published the artcileMultisubstituted C2-symmetric ansa-metallocenes bearing nitrogen heterocycles: influence of substituents on catalytic properties in propylene polymerization at higher temperatures, SDS of cas: 880652-93-7, the main research area is ansa zirconocene carbazolyl preparation stereoisomer catalyst propylene polymerization; Buchwald Hartwig amination preparation carbazolyl ansa zirconocene polymerization catalyst; electrophilic amination cyclization preparation carbazolyl ansa zirconocene polymerization catalyst.

In this work we systematically studied the effects of modifications of substituents on the performance of the isospecific zirconocene-based catalyst family, Me2Si(2-Alk-4-(N-carbazolyl)Ind)ZrX2 (X = Cl, Me), wherein the progenitor was shown to be particularly suitable in high-temperature propylene polymerization processes. In order to obtain the required zirconocenes, we developed a novel synthetic pathway to 4-(N-carbazolyl)indenes through Pd-catalyzed cyclizations of 2,2′-dibromobiaryls with 4-aminoindenes, which were synthesized via Buchwald-Hartwig reaction or electrophilic amination of 4-indenyl Grignard reagents with trimethylsilylmethyl azide. By a number of examples, the anion-promoted rac-to-meso isomerization method was shown to work reliably well for preparation of rac-ZrMe2-complexes. Certain zirconocenes among the 21 tested in propylene polymerization at 70-100° under MAO or borate activation outperformed the parent catalyst in mol. weight capability, regio- or stereoselectivity.

Dalton Transactions published new progress about Aluminoxanes, Me Role: CAT (Catalyst Use), USES (Uses) (MAO). 880652-93-7 belongs to class bromides-buliding-blocks, name is 7-Bromo-2-methyl-1H-indene, and the molecular formula is C10H9Br, SDS of cas: 880652-93-7.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Campeau, Louis-Charles published the artcilePalladium-Catalyzed Direct Arylation of Azine and Azole N-Oxides: Reaction Development, Scope and Applications in Synthesis, Recommanded Product: 1-Bromo-4-fluoro-2-methylbenzene, the main research area is azine azole oxide aryl halide palladium catalyst regioselective arylation.

Palladium-catalyzed direct arylation reactions were described with a broad range of azine and azole N-oxides. In addition to aspects of functional group compatibility, issues of regioselectivity were explored when nonsym. azine N-oxides were used. In these cases, both the choice of ligand and the nature of the azine substituents played important roles in determining the regioisomeric distribution. When azole N-oxides were employed, preferential reaction was observed for arylation at C2, which occurred under very mild conditions. Subsequent reactions were observed to occur at C5 followed by arylation at C4. The potential utility of this methodol. was illustrated by its use in the synthesis of a potent sodium channel inhibitor I and a Tie2 Tyrosine Kinase inhibitor II.

Journal of the American Chemical Society published new progress about Aryl halides Role: RCT (Reactant), RACT (Reactant or Reagent). 452-63-1 belongs to class bromides-buliding-blocks, name is 1-Bromo-4-fluoro-2-methylbenzene, and the molecular formula is C7H6BrF, Recommanded Product: 1-Bromo-4-fluoro-2-methylbenzene.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Ravi, S. published the artcileMacrocyclic musk compounds: Synthetic approaches to key intermediates for exaltolide, exaltone and dilactones, Name: 15-Bromopentadecanoic acid, the main research area is macrocyclic lactone exaltolide exaltone synthesis.

Facile syntheses to key intermediates 15-bromopentadecanoic acid and Me 15-hydroxypentadecanoate (for exaltolide), di-Me pentadecanedioate (for exaltone) and tridecanedioic acid and undecanedioic acid (for ethylene brassylate and cyclic ethylene undecanedioate), resp., was achieved from easily accessible aleuritic acid and 10-undecenoic acid.

Journal of the Indian Institute of Science published new progress about Lactones Role: SPN (Synthetic Preparation), PREP (Preparation). 56523-59-2 belongs to class bromides-buliding-blocks, name is 15-Bromopentadecanoic acid, and the molecular formula is C15H29BrO2, Name: 15-Bromopentadecanoic acid.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Dethe, Dattatraya H. published the artcileAsymmetric Ru/Cinchonine Dual Catalysis for the One-Pot Synthesis of Optically Active Phthalides from Benzoic Acids and Acrylates, Product Details of C8H7BrO3, the main research area is phthalide enantioselective preparation; benzoic acid acrylate ruthenium cinchonine tandem CH activation Michael.

Herein, asym. Ru/cinchonine dual catalysis that provided straightforward access to enantioselective synthesis of C-3 substituted phthalides, e.g., I via tandem C-H activation/Michael addition was reported. The use of readily accessible and less expensive [RuCl2 (p-cym)]2 and cinchonine catalyst for the one-pot assembly of chiral phthalides greatly overcame the present trend of using highly sophisticated catalysts. The developed method provided access to both enantiomers of a product using pseudo enantiomeric cinchona alkaloids as catalysts streamlining the synthesis of phthalide in both the optically active forms.

Journal of Organic Chemistry published new progress about Benzoic acids Role: RCT (Reactant), RACT (Reactant or Reagent). 74317-85-4 belongs to class bromides-buliding-blocks, name is 2-Bromo-4-methoxybenzoic acid, and the molecular formula is C8H7BrO3, Product Details of C8H7BrO3.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Khan, Siraj published the artcileSynthesis, molecular docking, and biological evaluation of 5-alkyl(aryl)-2-isobutylthiazole derivatives as α-amylase, α-glucosidase, and protein kinase inhibitors, Synthetic Route of 452-63-1, the main research area is thiazole preparation amylase glucosidase protein kinase inhibitor antitumor antidiabetic.

A series of 18 biol. active C5-arylated-2-isobutylthiazoles (aryl = Ph, 4-MeCOC6H4, 4-methyl-1-naphthyl, 5-formyl-2-furyl, etc.) was synthesized from 2-isobutylthiazole and the corresponding aryl bromides via C-H bond activation using Pd-NHC complexes [Pd(μ-Cl)Cl(NHC)]2 [NHC = 1,3-bis(2,6-dimethylphenyl)imidazolylidene] and [LCl2Pd-NHC] (L = PPh3, pyridine, 3-formylpyridine). All Pd-NHC complexes were prepared and characterized by 1H NMR, 13C NMR and FTIR spectroscopy, quadrupole-time of flight-liquid chromatog./mass spectroscopy (Q-TOF-LC/MS), gas chromatog.-mass spectrometry (GCMS), and m.p. techniques. The physicochem. properties, pharmacokinetics and drug-likeness of the thiazole products were calculated by SwissADME. PkCSM database was used to calculated the toxicity profile. Almost all the compounds showed no to low toxicity. All the products were addnl. assessed in vitro for their antidiabetic potential using α-amylase and α-glucosidase inhibitory activities. Except for 7 compounds, the prepared thiazoles showed good α-glucosidase inhibitory potential (IC50 7.17 ± 0.201 to 74.08 ± 0.244μg/mL) when compared with acarbose standard (IC50 16.59 ± 0.135μg/mL). All compounds had moderate to good inhibitory potential against the α-amylase enzyme, with IC50 values ranging from 12.00 ± 0.289 to 76.15 ± 0.477μg/mL. The protein kinase inhibition potential was determined for the first time, and 7 compounds showed activity with the zone of inhibition in the range of 9 ± 1.3 to 19 ± 1.5 mm. The ligands and active site binding interactions of α-glucosidase, α-amylase, and protein kinase enzymes were also studied using mol. modeling.

Applied Organometallic Chemistry published new progress about Aryl bromides Role: RCT (Reactant), RACT (Reactant or Reagent). 452-63-1 belongs to class bromides-buliding-blocks, name is 1-Bromo-4-fluoro-2-methylbenzene, and the molecular formula is C7H6BrF, Synthetic Route of 452-63-1.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary