Tag: M.W:100-200

Catalysts function by providing an alternate reaction mechanism that has a lower activation energy than would be found in the absence of the catalyst. In some cases, the catalyzed mechanism may include additional steps.In a article, 51207-66-0, molcular formula is C9H18N2, introducing its new discovery. Safety of (S)-(+)-1-(2-Pyrrolidinylmethyl)pyrrolidine

The direct synthesis of the cyclic sulphamidate of (S)-prolinol: Simultaneous N-protection and activation towards nucleophilic displacement of oxygen

The preparation of the cyclic sulphamidate of (S)-prolinol has been achieved by reaction with sulphuryl chloride at low temperature. This material has been shown to be susceptible to acid catalysed nucleophilic attack to furnish 2-(N,N-dialkylamino)methyl- and 2-(methoxymethyl)pyrrolidines after hydrolysis of the intermediate sulphamic acid derivatives.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, name: 4-Chloro-2,2′-bipyridine, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 14162-94-8, Name is 4-Chloro-2,2′-bipyridine, molecular formula is C10H7ClN2. In a Article, authors is Johansson, K. Olof，once mentioned of 14162-94-8

Toward high nuclearity ruthenium complexes: Creating new binding sites in metal complexes

The nickel-catalyzed coupling of a ruthenium ortho-chloroimine complex creates a new vacant bidentate binding site suitable for generating higher nuclearity ruthenium complexes.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Electric Literature of 3030-47-5, Because a catalyst decreases the height of the energy barrier, its presence increases the reaction rates of both the forward and the reverse reactions by the same amount.3030-47-5, Name is N1-(2-(Dimethylamino)ethyl)-N1,N2,N2-trimethylethane-1,2-diamine, molecular formula is C9H23N3. In a article，once mentioned of 3030-47-5

The mechanism of lithiation and nitrile insertion reactions of beta-methylazines: Evidence from the structure of 3-C5H4NCH=C(Ph)N(H)C(Ph)=NLi · PMDETA

A 1:1:1 reaction of 3-methylpyridine, 1, with LDA and PhCN in the presence of PMDETA gives the title complex 6, shown by X-ray crystallography to be the first monomeric iminolithium. The isolation of 6, and of a cyclised product 8 when a 3:10:3 reaction of 1:LDA:PhCN is carried out, suggest a mechanism for previously published cyclisation reactions of beta-methylazines.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent， Product Details of 2177-47-1, Which mentioned a new discovery about 2177-47-1

Palladium-Catalyzed Cyclization of Benzyl Halides and Related Electrophiles Containing Alkenes and Alkynes as a Novel Route to Carbocycles

Treatment of benzyl halides and related electrophiles containing alkene and alkyne groups with a catalytic amount of Pd complexes, such as Pd(PPh3)4, provides the corresponding cyclization products containing five- through seven-membered rings often with retention of the alkene regiochemistry.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Catalysts function by providing an alternate reaction mechanism that has a lower activation energy than would be found in the absence of the catalyst. In some cases, the catalyzed mechanism may include additional steps.In a article, 344-25-2, molcular formula is C5H9NO2, introducing its new discovery. Formula: C5H9NO2

SUBSTITUTED PIPERIDINYLTETRAHYDROQUINOLINES

The present application relates to novel substituted piperidinyltetrahydroquinolines, to processes for their preparation, to their use for the treatment and/or prevention of diseases and to their use for preparing medicaments for the treatment and/or prevention of diseases, in particular for the treatment and/or prevention of diabetic microangiopathies, diabetic ulcers on the extremities, in particular for promoting wound healing of diabetic foot ulcers, diabetic heart failure, diabetic coronary microvascular heart disorders, peripheral and cardial vascular disorders, thromboembolic disorders and ischaemias, peripheral circulatory disturbances, Raynaud’s phenomenon, CREST syndrome, microcirculatory disturbances, intermittent claudication, and peripheral and autonomous neuropathies.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent， Product Details of 105-83-9, Which mentioned a new discovery about 105-83-9

Polyamine analogues with antitumor activity

A series of tetraamines derived from 1,8-diaminooctane was prepared and tested as antitumor agents. The reaction of 1,8-diaminooctane with acrylonitrile gave N,N’-bis(cyanoethyl)-1,8-diaminooctane, which was reduced to tetraamine 20. Alkylation of the terminal nitrogen atoms of the tetra-Boc derivative of this compound by methyl or ethyl halide followed by removal of the Boc groups gave the bis(alkyl)polyamines 26a and 26b, respectively. These three compounds exhibit promising antitumor activity in the mouse L1210 leukemia model. Coadministration of a polyamine oxidase inhibitor potentiated the antitumor activity.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Synthetic Route of 62937-45-5, A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 62937-45-5, Name is D-Prolinamide, molecular formula is C5H10N2O. In a Article，once mentioned of 62937-45-5

Incorporation of unnatural amino acid derivatives into a peptide bond via an oxime ester catalysed by papain or lipase

In the presence of an oxime in the reaction solution, papain and lipase P (Pseudomonas from Amano) catalysed the stereoselective transesterification of an N-protected amino acid or peptide ester to form an active (oxime) ester which in turn underwent peptide bond formation with several natural and unnatural amino acid derivatives (proline, N-methylglycine, N-methylalanine, alpha-methylphenylalanine).

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Application of 2926-30-9, Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. 2926-30-9, Name is Sodium trifluoromethanesulfonate,introducing its new discovery.

Cyano-bridged Fe(II)-Cu(II) bimetallic assemblies: Honeycomb-like and pentanuclear structures

A 2D honeycomb-like compound [Fe(CN)6{Cu(apn)}3] n(ClO4)2n(H2O)4n (1) (apn=N-(3-aminopropyl)-1,3-propanediamine) and a pentanuclear compound [Fe(CN)6{Cu(dmen)2}4](ClO4) 4 (2) (dmen=N,N-dimethylethylenediamine) have been prepared and characterized. In the synthesis, the use of ferricyanide or ferrocyanide yielded identical products due to reduction of Fe(III) ion to Fe(II) in water. For 1, all cyanide groups of ferrocyanide are bonded to six Cu(II) ions of which two symmetry-related Cu atoms are linked to nitrogen atoms of cyanide ligands bound to the neighboring Fe(II) center, resulting in the honeycomb structure. The variations of the geometries around Cu(II) centers are between ideal trigonal bipyramidal and square pyramidal structures, which may arise from the relative structural arrangements of flexible apn ligands. For 2, all the Cu(II) ions can be seen as square pyramidal geometries composed of basal least-squares planes from four dmen nitrogen atoms and apical nitrogen atoms from cyanide bridge. The Cu-NC angle around Cu centers in 2 is 127.9(7), much acuter than that of 1, which is presumably associated with steric interactions between the bulky methyl groups of the dmen ligands on the neighboring Cu ions. Both compounds exhibit very weak antiferromagnetic interactions in the low temperature range.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Synthetic Route of 3030-47-5, In heterogeneous catalysis, the catalyst is in a different phase from the reactants. At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 3030-47-5, name is N1-(2-(Dimethylamino)ethyl)-N1,N2,N2-trimethylethane-1,2-diamine. In an article，Which mentioned a new discovery about 3030-47-5

The molecular structure of 1-lithio-2-methoxybenzene in the solid state and in solution

The X-ray structure of 1-lithio-2-methoxybenzene (2-methoxyphenyllithium) has been determined at 298 K by single crystal X-ray techniques.The compound crystallizes in the triclinic system with spacegroup p1.Cell dimensions: a 8.889(2), b 11.710(5), c 12.941(3) Angstroem, alpha 80.47(3), beta 84.22(2), gamma 82.37(3) deg.The structure has been refined to R(F) = 0.069 for 1300 unique observed reflections with I >/= 2.5?(I).Each unit cell contains two centrosymmetrically related tetrameric units which show Li…HC interactions with each other.Its structure in solution has been determined by NMR spectroscopy and association measurements.The influence of various Lewis bases on the solution structure has been studied.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.3030-47-5. In my other articles, you can also check out more blogs about 3030-47-5

Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Synthetic Route of 3030-47-5, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.3030-47-5, Name is N1-(2-(Dimethylamino)ethyl)-N1,N2,N2-trimethylethane-1,2-diamine, molecular formula is C9H23N3. In a Article，once mentioned of 3030-47-5

Dimerization of the allylzinc cation: Selective coupling of allyl anions in a metallo-ene reaction

Metal assistance: Dimerization of the allylzinc monocation gives the dimetalated coupling product in quantitative yield (see scheme). Kinetic and thermodynamic parameters of this reversible metallo-ene reaction have been determined. This reaction serves as a model system for the alkali-metal catalyzed production of 4-methylpentene. Copyright

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI