Tag: M.W=300-350

Qiu, Joseph C. published the artcileSelective Oxoammonium Salt Oxidations of Alcohols to Aldehydes and Aldehydes to Carboxylic Acids [Erratum to document cited in CA156:073637], HPLC of Formula: 219543-09-6, the publication is Organic Letters (2012), 14(15), 4034, database is CAplus.

On page S3 of the Supporting Information, describing the General Procedure for the Oxidation of Alcs. to Carboxylic Acids, the oxidant itself and the amount of oxidant were omitted; the correct version of the Supporting Information is given.

Organic Letters published new progress about 219543-09-6. 219543-09-6 belongs to piperidines, auxiliary class Piperidine,Fluoride,Salt,Amine,Amide, name is 4-Acetamido-2,2,6,6-tetramethyl-1-oxopiperidinium Tetrafluoroborate, and the molecular formula is C11H21BF4N2O2, HPLC of Formula: 219543-09-6.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem

Nicolaou, K. C. published the artcileSynthesis and Biological Investigation of Δ¹²-Prostaglandin J₃ (Δ¹²-PGJ₃) Analogues and Related Compounds, Synthetic Route of 219543-09-6, the publication is Journal of the American Chemical Society (2016), 138(20), 6550-6560, database is CAplus and MEDLINE.

A series of Δ¹²-prostaglandin J₃ (Δ¹²-PGJ₃) analogs and derivatives were synthesized employing an array of synthetic strategies developed specifically to render them readily available for biol. investigations. The synthesized compounds were evaluated for their cytotoxicity against a number of cancer cell lines, revealing nanomolar potencies for a number of them against certain cancer cell lines. Four analogs (I–IV) demonstrated inhibition of nuclear export through a covalent addition at Cys528 of the export receptor Crm1. One of these compounds (i.e., II) is currently under evaluation as a potential drug candidate for the treatment of certain types of cancer. These studies culminated in useful and path-pointing structure-activity relationships (SARs) that provide guidance for further improvements in the biol./pharmacol. profiles of compounds within this class.

Journal of the American Chemical Society published new progress about 219543-09-6. 219543-09-6 belongs to piperidines, auxiliary class Piperidine,Fluoride,Salt,Amine,Amide, name is 4-Acetamido-2,2,6,6-tetramethyl-1-oxopiperidinium Tetrafluoroborate, and the molecular formula is C11H21BF4N2O2, Synthetic Route of 219543-09-6.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem

Yonekuta, Yasunori published the artcileStructural implication of oxoammonium cations for reversible organic one-electron redox reaction to nitroxide radicals, Related Products of piperidines, the publication is Chemistry Letters (2007), 36(7), 866-867, database is CAplus.

Structures and electrochem. behaviors of nitroxide radicals reveal that their rapid and reversible redox reactions are based not only on their chem. stability but also on the increased sp² character of nitrogens which is intermediate between the purely sp² and sp³ nitrogens in oxoammonium cations and amines, resp.

Chemistry Letters published new progress about 219543-09-6. 219543-09-6 belongs to piperidines, auxiliary class Piperidine,Fluoride,Salt,Amine,Amide, name is 4-Acetamido-2,2,6,6-tetramethyl-1-oxopiperidinium Tetrafluoroborate, and the molecular formula is C2H4ClNO, Related Products of piperidines.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem

Kelly, Christopher B. published the artcileOxidative cleavage of allyl ethers by an oxoammonium salt, Recommanded Product: 4-Acetamido-2,2,6,6-tetramethyl-1-oxopiperidinium Tetrafluoroborate, the publication is Organic & Biomolecular Chemistry (2015), 13(14), 4255-4259, database is CAplus and MEDLINE.

A method to oxidatively cleave allyl ethers to their corresponding aldehydes mediated by an oxoammonium salt is described. Using a biphasic solvent system and mild heating, the cleavage proceeds readily, furnishing a variety of α,β-unsaturated aldehydes and ketones. E.g, oxidative cleavage of allyl ether (I) in presence of oxoammonium salt (II) gave 79% α,β-unsaturated aldehyde (III).

Organic & Biomolecular Chemistry published new progress about 219543-09-6. 219543-09-6 belongs to piperidines, auxiliary class Piperidine,Fluoride,Salt,Amine,Amide, name is 4-Acetamido-2,2,6,6-tetramethyl-1-oxopiperidinium Tetrafluoroborate, and the molecular formula is C11H21BF4N2O2, Recommanded Product: 4-Acetamido-2,2,6,6-tetramethyl-1-oxopiperidinium Tetrafluoroborate.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem

D’Amato, Erica M. published the artcileSelective Aromatic C-H Hydroxylation Enabled by η⁶-Coordination to Iridium(III), Formula: C11H21BF4N2O2, the publication is Organometallics (2015), 34(18), 4626-4631, database is CAplus and MEDLINE.

Authors report here an aromatic C-H hydroxylation protocol in which the arene is activated through η⁶-coordination to an iridium(III) complex. η⁶-Coordination of the arene increases its electrophilicity and allows for high positional selectivity of hydroxylation at the site of least electron d. Through investigation of intermediate η⁵-cyclohexadienyl adducts and arene exchange reactions, it was evaluated that incorporation of arene π-activation into a catalytic cycle for C-H functionalization.

Organometallics published new progress about 219543-09-6. 219543-09-6 belongs to piperidines, auxiliary class Piperidine,Fluoride,Salt,Amine,Amide, name is 4-Acetamido-2,2,6,6-tetramethyl-1-oxopiperidinium Tetrafluoroborate, and the molecular formula is C11H21BF4N2O2, Formula: C11H21BF4N2O2.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem

Milo, Anat published the artcileA data-intensive approach to mechanistic elucidation applied to chiral anion catalysis, Recommanded Product: 4-Acetamido-2,2,6,6-tetramethyl-1-oxopiperidinium Tetrafluoroborate, the publication is Science (Washington, DC, United States) (2015), 347(6223), 737-743, database is CAplus and MEDLINE.

Knowledge of chem. reaction mechanisms can facilitate catalyst optimization, but extracting that knowledge from a complex system is often challenging. Here, the authors present a data-intensive method for deriving and then predictively applying a mechanistic model of an enantioselective organic reaction. As a validating case study, the authors selected an intramol. dehydrogenative C-N coupling reaction, catalyzed by chiral phosphoric acid derivatives, in which catalyst-substrate association involves weak, noncovalent interactions. Little was previously understood regarding the structural origin of enantioselectivity in this system. Catalyst and substrate substituent effects were probed by systematic phys. organic trend anal. Plausible interactions between the substrate and catalyst that govern enantioselectivity were identified and supported exptl., indicating that such an approach can afford an efficient means of leveraging mechanistic insight so as to optimize catalyst design.

Science (Washington, DC, United States) published new progress about 219543-09-6. 219543-09-6 belongs to piperidines, auxiliary class Piperidine,Fluoride,Salt,Amine,Amide, name is 4-Acetamido-2,2,6,6-tetramethyl-1-oxopiperidinium Tetrafluoroborate, and the molecular formula is C11H21BF4N2O2, Recommanded Product: 4-Acetamido-2,2,6,6-tetramethyl-1-oxopiperidinium Tetrafluoroborate.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem

Bobbitt, James M. published the artcileOxoammonium Salts. 6. 4-Acetylamino-2,2,6,6-tetramethylpiperidine-1-oxoammonium perchlorate: A stable and convenient reagent for the oxidation of alcohols. Silica gel catalysis, Computed Properties of 219543-09-6, the publication is Journal of Organic Chemistry (1998), 63(25), 9367-9374, database is CAplus.

The title piperidine-1-oxoammonium perchlorate I is a stable, nonhygroscopic oxoammonium salt that is easily prepared and can be used for the oxidation of alcs. to ketones or aldehydes in near quant. yields. The reaction is colorimetric, does not require anhydrous conditions, does not involve heavy metals, and can be carried out conveniently. Furthermore, the oxidant can be easily regenerated. The oxidation is somewhat specific in that the relative reactivities of an allyl alc. (geraniol), benzaldehyde, and 1-decanol are about 1001:0.1. The reaction is catalyzed by silica gel.

Journal of Organic Chemistry published new progress about 219543-09-6. 219543-09-6 belongs to piperidines, auxiliary class Piperidine,Fluoride,Salt,Amine,Amide, name is 4-Acetamido-2,2,6,6-tetramethyl-1-oxopiperidinium Tetrafluoroborate, and the molecular formula is C11H21BF4N2O2, Computed Properties of 219543-09-6.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem

Liu, Jian-Guo published the artcileDevelopment of Bisindole-Substituted Aminopyrazoles as Novel GSK-3β Inhibitors with Suppressive Effects against Microglial Inflammation and Oxidative Neurotoxicity, Formula: C18H24N2O2, the publication is ACS Chemical Neuroscience (2020), 11(20), 3398-3408, database is CAplus and MEDLINE.

Development of glycogen synthase kinase-3β (GSK-3β) inactivation-centric agents with polypharmacol. profiles is increasingly recognized as a promising therapeutic strategy against the multifactorial etiopathol. of Alzheimer’s disease (AD). In this respect, a series of disubstituted aminopyrazole derivatives were designed and synthesized as a new class of GSK-3β inhibitors. Most of these derivatives possess GSK-3β inhibitory activities with IC₅₀ values in the micromolar ranges, among which bisindole-substituted aminopyrazole derivative 6h displayed moderate GSK-3β inhibition (IC₅₀ = 1.76 ± 0.19μM), and alleviative effects against lipopolysaccharide (LPS)-induced glial inflammation in BV-2 cells and glutamate-induced oxidative neurotoxicity in HT-22 cells. Further in vivo studies indicated that compound 6h(I) had potent anti-inflammatory effect, by showing markedly reduced microglial activation and astrocyte proliferation in the brain of LPS-injected mice. Overall, the simultaneous modulation of 6h on multiple dysfunctions of disease network highlights this structural distinctively bisindole-substituted aminopyrazole could be a useful prototype for the discovery of novel therapeutic agents to tackle AD and other GSK-3β associated complex neurol. syndromes.

ACS Chemical Neuroscience published new progress about 170364-89-3. 170364-89-3 belongs to piperidines, auxiliary class Indole,Piperidine,Amide, name is tert-Butyl 4-(1H-indol-1-yl)piperidine-1-carboxylate, and the molecular formula is C18H24N2O2, Formula: C18H24N2O2.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem

Wang, Man published the artcileNeighboring Thioether Participation in Bioinspired Radical Oxidative C(sp³)-H α-Oxyamination of Pyruvate Derivatives, Computed Properties of 219543-09-6, the publication is Organic Letters (2020), 22(22), 8941-8946, database is CAplus and MEDLINE.

A bioinspired radical oxidative α-oxyamination of pyruvate with an oxoammonium salt through multiple-site concerted proton-electron transfer process has been developed, which was facilitated by anchoring the mercapto chains as a “hopping” site at the γ-position of α-keto esters.

Organic Letters published new progress about 219543-09-6. 219543-09-6 belongs to piperidines, auxiliary class Piperidine,Fluoride,Salt,Amine,Amide, name is 4-Acetamido-2,2,6,6-tetramethyl-1-oxopiperidinium Tetrafluoroborate, and the molecular formula is C11H15NOS, Computed Properties of 219543-09-6.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem

Wang, Zemin published the artcileDearomatization-Rearomatization Strategy for Reductive Cross-Coupling of Indoles with Ketones in Water, Application In Synthesis of 170364-89-3, the publication is Organic Letters (2019), 21(7), 2302-2306, database is CAplus and MEDLINE.

N-Alkylation of indoles is one of the important pathways for the construction of various biol. active indole mols. Using ketones as N-alkylation reagent for indoles was a great challenge not only because of the competing alkylation reaction of C-3 position but also because of the poor nucleophilicity of the nitrogen atom of indole, in addition to the steric hindrance and lower electrophilicity of the ketones. A dearomatization-rearomatization strategy was developed for reductive cross-coupling of indoles with ketones in water. Various functional groups and other heterocyclic compounds are tolerated.

Organic Letters published new progress about 170364-89-3. 170364-89-3 belongs to piperidines, auxiliary class Indole,Piperidine,Amide, name is tert-Butyl 4-(1H-indol-1-yl)piperidine-1-carboxylate, and the molecular formula is C18H10, Application In Synthesis of 170364-89-3.

Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem