Category: 128-09-6

Salman, Noori Y.; Al-niami, Kisma H. Ibrahim published the artcile< Kinetic and mechanistic study of alanine oxidation by N-chlorosuccinimide using Mn2+ as catalyst>, Name: 1-Chloropyrrolidine-2,5-dione, the main research area is alanine N chlorosuccinimide manganese oxidation kinetic catalyst.

Kinetic studies of oxidation of alanine by N-chlorosuccinimide (NCIS) have been investigated at different pH’s. The reaction shows consecutive first order reaction with respect to both oxidant and substrate. Fractional order were observed in hydrogen ion and manganeseion. Slight effect of addition of reaction product (succinimide) on the rate of oxidation reaction have been noticed. Changing the ionic strength had no effect on the rate of oxidation reaction. Cl+ or NClS and NClS protonated were suggested to be the reactive species of N-chlorosuccinimide. An intermediates compounds have been found and proved by using michaelis menton equation. A reaction mechanism for the oxidation reaction was suggested.

IOP Conference Series: Materials Science and Engineering published new progress about Ionic strength. 128-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C4H4ClNO2, Name: 1-Chloropyrrolidine-2,5-dione.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Watanabe, Yuichiro; Washer, Benjamin M.; Zeller, Matthias; Savikhin, Sergei; Slipchenko, Lyudmila V.; Wei, Alexander published the artcile< Copper(I)-pyrazolate complexes as solid-state phosphors: Deep-blue emission through a remote steric effect>, Synthetic Route of 128-09-6, the main research area is copper pyrazolate solid state phosphor deep blue emission; remote steric effect copper pyrazolate rigid excited state geometry.

We describe a novel manifestation of rigidochromic behavior in a series of tetranuclear Cu(I)-pyrazolate (Cu4pz4) macrocycles, with implications for solid-state luminescence at deep-blue wavelengths (<460 nm). The Cu4pz4 emissions are remarkably sensitive to structural effects far from the luminescent core: when 3,5-di-tert-butylpyrazoles are used as bridging ligands, adding a C4 substituent can induce a blue shift of more than 100 nm. X-ray crystal and computational analyses reveal that C4 units influence the conformational behavior of adjacent tert-Bu groups, with a subsequent impact on the global conformation of the Cu4pz4 complex. Emissions are mediated primarily through a cluster-centered triplet (3CC) state; compression of the Cu4 cluster into a nearly close-packed geometry prevents the reorganization of its excited-state structure and preserves the 3CC energy at a high level. The remote steric effect may thus offer alternative strategies toward the design of phosphors with rigid excited-state geometries. Journal of the American Chemical Society published new progress about Cluster compounds, copper Role: PEP (Physical, Engineering or Chemical Process), PRP (Properties), SPN (Synthetic Preparation), PROC (Process), PREP (Preparation). 128-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C4H4ClNO2, Synthetic Route of 128-09-6.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Ashida, Yoshiki; Yanagita, Ryo C.; Kawanami, Yasuhiro; Okamura, Mutsumi; Dan, Shingo; Irie, Kazuhiro published the artcile< Synthesis, conformation and biological activities of a des-a-ring analog of 18-deoxy-aplog-1, a simplified analog of debromoaplysiatoxin>, Related Products of 128-09-6, the main research area is protein kinase 18 deoxy aplog1 analog neoplasm antiproliferative activity.

10-Me-Aplog-1 as a simplified analog of tumor-promoting debromoaplysiatoxin and a potent activator of protein kinase C (PKC) is a promising chemotherapeutic agent. In this study, we synthesized a des-A-ring analog of 18-deoxy-aplog-1 as a synthetically-accessible analog. Compound 4 retained the conformation of the PKC-recognition part of aplogs. Moderate affinity for conventional PKC isoenzymes (α, β, γ) and anti-proliferative activity against NCI-H460 (lung) and MKN45 (stomach) human cancer cell lines were observed The results suggest that 4 could serve as a lead compound for the development of conventional PKC isoenzyme-selective chemotherapeutic agents.

Heterocycles published new progress about Antitumor agents. 128-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C4H4ClNO2, Related Products of 128-09-6.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Zheng, Qinheng; Woehl, Jordan L.; Kitamura, Seiya; Santos-Martins, Diogo; Smedley, Christopher J.; Li, Gencheng; Forli, Stefano; Moses, John E.; Wolan, Dennis W.; Sharpless, K. Barry published the artcile< SuFEx-enabled, agnostic discovery of covalent inhibitors of human neutrophil elastase>, Formula: C4H4ClNO2, the main research area is SuFEx agnostic covalent neutrophil elastase inhibitor crystal structure; SuFEx; agnostic; click chemistry; covalent inhibitor; elastase.

Sulfur fluoride exchange (SuFEx) has emerged as the new generation of click chem. We report here a SuFEx-enabled, agnostic approach for the discovery and optimization of covalent inhibitors of human neutrophil elastase (hNE). Evaluation of our ever-growing collection of SuFExable compounds toward various biol. assays unexpectedly revealed a selective and covalent hNE inhibitor: benzene-1,2-disulfonyl fluoride. Synthetic derivatization of the initial hit led to a more potent agent, 2-(fluorosulfonyl)phenyl fluorosulfate with IC50 0.24μM and greater than 833-fold selectivity over the homologous neutrophil serine protease, cathepsin G. The optimized, yet simple benzenoid probe only modified active hNE and not its denatured form.

Proceedings of the National Academy of Sciences of the United States of America published new progress about Crystal structure. 128-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C4H4ClNO2, Formula: C4H4ClNO2.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Jiang, Quanbin; Li, Huimin; Zhao, Xiaodan published the artcile< Catalytic Electrophilic Thiocarbocyclization of Allenes>, Electric Literature of 128-09-6, the main research area is indene sulfide preparation regioselective; allene sulfur reagent electrophilic thiocarbocyclization selenide catalyst.

An efficient approach via catalytic electrophilic thiocarbocyclization of allenes (3-R-4-R1C6H4)(R2)C=C=CR3 (R = H, F; R1 = H, Me, Cl, F, CN; R2 = Me, Et, Ph; R3 = n-Pr, Ph, 2-methoxyphenyl, 4-bromophenyl, etc.) to construct indene-based sulfides I (R4 = n-Pr, hexyl, Ph, Bn, etc.) with excellent regioselectivities is disclosed. The reactions were carried out at low temperatures by selenide catalysis in the presence of TMSOTf. Not only electrophilic arylthio reagents II (R4 = Ph, 2-methylphenyl, 4-methylphenyl, 4-fluorophenyl, Bn) but also electrophilic alkylthio reagents II (R4 = n-Pr, hexyl, 3-methylbutyl, 3-chloropropyl) worked well under these conditions. Furthermore, the method could be applied to intermol. azidothiolation of allenes.

Organic Letters published new progress about Allenes Role: RCT (Reactant), RACT (Reactant or Reagent). 128-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C4H4ClNO2, Electric Literature of 128-09-6.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Patel, Rakesh; Prakash, Ravi; Bala, Ritu Swamini; Prajapati, Brijesh Kumar; Yadav, Rupam published the artcile< Kinetic oxidation studies of pentoxifylline by N-chlorosuccinimide in acidic medium using iridium(III) chloride as inhibitor>, Quality Control of 128-09-6, the main research area is pentoxifylline chlorosuccinimide oxidation reaction kinetics.

In present study, the kinetics and mechanism of oxidation of pentoxifylline (PTX) by N-chlorosuccinimide (NCS) in acidic conditions at 40 ± 0.1°C is reported. The reaction depicts first-order kinetics in regard to [NCS], [PTX] and [HClO4]. The reaction rate goes on decreasing as the concentration of iridium(III) chloride is increased. This shows that iridium(III) chloride plays the role of an inhibitor in the reaction under investigation. Nil impact of [Hg(OAc)2], [NHS] and dielec. constant (D) of the medium on the rate of oxidation of pentoxifylline have been observed This reaction has been investigated from 308-323 K and the monitored rate of reaction suggests a direct relationship between temperature and the rate of reaction. From the graph between log k and 1/T, value of activation energy (Ea) was numerated and more activation parameters like enthalpy of activation (ΔH#), entropy of activation (ΔS#) and free energy of activation (ΔG#) were calculated with the help of activation energy (Ea). On account of exptl. determined the kinetic orders and activation parameters, a most plausible reaction path has been suggested for the oxidation of pentoxifylline in presence of Ir(III) as an inhibitor.

Asian Journal of Chemistry published new progress about Activation energy. 128-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C4H4ClNO2, Quality Control of 128-09-6.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Hong, Xi; Zhou, Quan; Huang, Shuang; Cui, He-Zhen; Li, Zhi-Ming; Hou, Xiu-Feng published the artcile< Transition metal catalyzed C7 and ortho-selective halogenation of 2-arylbenzo[d]oxazoles>, Application In Synthesis of 128-09-6, the main research area is halosuccinimide phenyl benzoxazole rhodium catalyst regioselective halogenation; halophenyl benzoxazole preparation; phenyl halo benzoxazole preparation.

A transition metal catalyzed chlorination, bromination and iodination of 2-arylbenzo[d]oxazole with N-halosuccinimide, in which ruthenium-catalyzed halogenation occurred on the C7-position and rhodium-catalyzed halogenation occurred on the ortho-position. The C7 halogenation was only observed for 5-methyl-2-(p-substituted)arylbenzo[d]oxazoles under rhodium catalysis. Preliminary mechanistic experiments and d. functional theory (DFT) calculations suggested that the C7-halogenation catalyzed by Ru might have a single-electron-transfer (SET) radical process, while the ortho-selective halogenation catalyzed by Rh proceeds probably through a redox-neutral SN2-type mechanism. The different selectivity of Rh catalyzed halogenation was due to the charge difference between benzo[d]oxazolyl and aryl rings. The two kinds of halogenated products were proved to be versatile by constructing aryl and alkynyl groups on the C-X site via Suzuki and Sonogashira cross-coupling reactions.

Organic Chemistry Frontiers published new progress about Benzoxazoles Role: PRP (Properties), RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 128-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C4H4ClNO2, Application In Synthesis of 128-09-6.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Hutchinson, George; Alamillo-Ferrer, Carla; Bures, Jordi published the artcile< Mechanistically Guided Design of an Efficient and Enantioselective Aminocatalytic α-Chlorination of Aldehydes>, Product Details of C4H4ClNO2, the main research area is aldehyde NCS Jorgensen Hayashi catalyst regioselective chlorination; chloro aldehyde stereoselective preparation.

The enantioselective aminocatalytic α-chlorination of aldehydes is a challenging reaction because of its tendency to proceed through neutral intermediates in unselective pathways. Herein we report the rational shift to a highly selective reaction pathway involving charged intermediates using hexafluoroisopropanol as solvent. This change in mechanism has enabled us to match and improve upon the yields and enantioselectivities displayed by previous methods while using cheaper aminocatalysts and chlorinating agents, 80-95% less amount of catalyst, convenient temperatures, and shorter reaction times.

Journal of the American Chemical Society published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 128-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C4H4ClNO2, Product Details of C4H4ClNO2.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Hong, Xi; Zhou, Quan; Huang, Shuang; Cui, He-Zhen; Li, Zhi-Ming; Hou, Xiu-Feng published the artcile< Transition metal catalyzed C7 and ortho-selective halogenation of 2-arylbenzo[d]oxazoles>, Application In Synthesis of 128-09-6, the main research area is halosuccinimide phenyl benzoxazole rhodium catalyst regioselective halogenation; halophenyl benzoxazole preparation; phenyl halo benzoxazole preparation.

A transition metal catalyzed chlorination, bromination and iodination of 2-arylbenzo[d]oxazole with N-halosuccinimide, in which ruthenium-catalyzed halogenation occurred on the C7-position and rhodium-catalyzed halogenation occurred on the ortho-position. The C7 halogenation was only observed for 5-methyl-2-(p-substituted)arylbenzo[d]oxazoles under rhodium catalysis. Preliminary mechanistic experiments and d. functional theory (DFT) calculations suggested that the C7-halogenation catalyzed by Ru might have a single-electron-transfer (SET) radical process, while the ortho-selective halogenation catalyzed by Rh proceeds probably through a redox-neutral SN2-type mechanism. The different selectivity of Rh catalyzed halogenation was due to the charge difference between benzo[d]oxazolyl and aryl rings. The two kinds of halogenated products were proved to be versatile by constructing aryl and alkynyl groups on the C-X site via Suzuki and Sonogashira cross-coupling reactions.

Organic Chemistry Frontiers published new progress about Benzoxazoles Role: PRP (Properties), RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 128-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C4H4ClNO2, Application In Synthesis of 128-09-6.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Hutchinson, George; Alamillo-Ferrer, Carla; Bures, Jordi published the artcile< Mechanistically Guided Design of an Efficient and Enantioselective Aminocatalytic α-Chlorination of Aldehydes>, Product Details of C4H4ClNO2, the main research area is aldehyde NCS Jorgensen Hayashi catalyst regioselective chlorination; chloro aldehyde stereoselective preparation.

The enantioselective aminocatalytic α-chlorination of aldehydes is a challenging reaction because of its tendency to proceed through neutral intermediates in unselective pathways. Herein we report the rational shift to a highly selective reaction pathway involving charged intermediates using hexafluoroisopropanol as solvent. This change in mechanism has enabled us to match and improve upon the yields and enantioselectivities displayed by previous methods while using cheaper aminocatalysts and chlorinating agents, 80-95% less amount of catalyst, convenient temperatures, and shorter reaction times.

Journal of the American Chemical Society published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 128-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C4H4ClNO2, Product Details of C4H4ClNO2.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics