Tag: M.W:100-200

One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, COA of Formula: C4H2Cl2N2, such as the rate of change in the concentration of reactants or products with time.In a article, mentioned the application of 141-30-0, Name is 3,6-Dichloropyridazine, molecular formula is C4H2Cl2N2

A new class of luminescent tricarbonyl rhenium(I) complexes containing bridging 1,2-diazine ligands: electrochemical, photophysical, and computational characterization

A novel class of luminescent tricarbonyl rhenium(I) complexes of general formula [Re2(mu-X)2(CO)6(mu-diaz)] (X = halogen and diaz = 1,2-diazine) was prepared by reacting [ReX(CO)5] with 0.5 equiv of diazine (seven different ligands were used). The bridging coordination of the diazine in these dinuclear complexes was confirmed by single-crystal X-ray analysis. Cyclic voltammetry in acetonitrile showed for all the complexes (but the phthalazine derivative) a chemically and electrochemically reversible ligand-centered reduction, as well as a reversible metal-centered bielectronic oxidation. With respect to the prototypical luminescent [ReCl(CO)3(bpy)] complex, the oxidation is more difficult and the reduction easier (about +0.3 V), so that a similar highest occupied molecular orbital-lowest unoccupied molecular orbital gap is observed. All of the complexes exhibit photoluminescence at room temperature in solution, with broad unstructured emission from metal-to-ligand charge-transfer states, at lambda in the range 579-620 nm. Lifetimes (tau = 20-2200 ns) and quantum yields (Phi up to 0.12) dramatically change upon varying the bridging ligand X and the diazine substituents: in particular, quantum yields decrease in the series Cl, Br, and I and in the presence of substituents at the alpha positions of the pyridazine ring. A combined density functional and time-dependent density functional study of the geometry, relative stability, electronic structure, and photophysical properties of all the pyridazine derivatives was performed. The nature of the excited states involved in the electronic absorption spectra was ascertained, and trends in the energy of the highest occupied and lowest unoccupied molecular orbitals upon changing the pyridazine substituents and the bridging halogen ligands were discussed. The observed emission properties of these complexes were shown to be related to a combination of steric and electronic factors affecting their ground-state geometry and their stability.

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Reference：
Pyridazine – Wikipedia,
Pyridazine | C4H4N1677 – PubChem

 

In heterogeneous catalysis, the catalyst is in a different phase from the reactants. Product Details of 64068-00-4, At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 64068-00-4, name is 6-Chloro-4-methylpyridazin-3-amine. In an article，Which mentioned a new discovery about 64068-00-4

Reactivity of 2-substituted imidazo[1,2-b]pyridazines: Preparation of 3-nitro, nitroso and chloro derivatives

The synthesis of 2-substitutedimidazo[1,2-b]pyridazines and their reactivity towards electrophilic substitutions are reported. The nitration was shown to be very dependent on the nature of the 2 substituent. Nitrosation using sodium nitrite in acetic acid media as a general method failed in all cases whereas chlorination was observed in warm hydrochloric acid. In order to ascertain the structure of some chloro derivatives, chlorination using N-chlorosuccinimide was also reported. Depending of the nature of the substituent, the reaction occurred at the C-3 imidazolic position and/or at the substituent on position 2. The 3-nitroso-2-phenyl derivative was finally obtained using an alternative synthetic pathway by direct condensation of 3-amino-6-chloropyridazine to omega-chloro-omega-nitrosoacetophenone. The structural determinations were ascertained using high field 1H and 13C-NMR.

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Reference：
Pyridazine – Wikipedia,
Pyridazine | C4H4N1061 – PubChem

 

Reference of 1120-95-2, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.1120-95-2, Name is 3-Chloropyridazine, molecular formula is C4H3ClN2. In a Patent，once mentioned of 1120-95-2

BICYCLIC FUSED PYRIDINE COMPOUNDS AS INHIBITORS OF TAM KINASES

Provided herein are compounds of the Formula (I): and stereoisomers, tautomers and pharmaceutically acceptable salts thereof, wherein Ring A, X1, X2, X3, R1, R2 and R3 are as defined herein, which are inhibitors of one or more TAM kinases and are useful in the treatment and prevention of diseases which can be treated with a TAM kinase inhibitor.

A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. In my other articles, you can also check out more blogs about 1120-95-2

Reference：
Pyridazine – Wikipedia,
Pyridazine | C4H4N371 – PubChem

 

One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, COA of Formula: C5H2ClN3, such as the rate of change in the concentration of reactants or products with time.In a article, mentioned the application of 35857-89-7, Name is 6-Chloropyridazine-3-carbonitrile, molecular formula is C5H2ClN3

Orally active, nonpeptide vasopressin V2 receptor antagonists: A novel series of 1-[4-(benzoylamino)benzoyl]-2,3,4,5-tetrahydro-1H-benzazepines and related compounds

This paper describes a novel series of nonpeptide vasopressin V2 receptor antagonists. It has been demonstrated that the 1-[4- (benzoylamino)benzoyl]-2,3,4,5-1H-benzazepines and 1-[4- (benzoylamino)benzoyl]-2,3,4,5-1H-1,5-benzodiazepines show a high affinity for V2 (and V(1a)) receptors. Among the 1-[4-(benzoylamino)benzoyl]-2,3,4,5- 1H-benzazepine series, compounds with an alkylamino group on the benzazepine ring have been shown to have oral activity. A lipophilic group at the ortho position on the terminal benzoyl ring is important for both high V2 receptor affinity and oral activity. On the basis of these favorable properties, clinical testing of 31b has begun for use as an oral and iv aquaretic agent.

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Reference：
Pyridazine – Wikipedia,
Pyridazine | C4H4N956 – PubChem

 

20375-65-9, Name is 3-Phenyl-6-chloropyridazine, belongs to pyridazine compound, is a common compound. Formula: C10H7ClN2In an article, once mentioned the new application about 20375-65-9.

Dipeptides with 3-(trimethylstannyl)alanine building blocks: Synthesis, characterization, and reactivity

3-(Trimethylstannyl)alanine esters containing a free amino group react with different N-benzoyloxycarbonyl amino acids in the presence of N,N?-dicyclohexylcarbodiimide to yield new dipeptides with beta-(trimethylstannyl)alanine building blocks. Reactions at the stannyl group were studied in more detail in two glycyl alaninates. Their reaction with Me3SnCl without solvent yields the chlorostannyl-substituted compounds. The glycyl alaninates react with two equivalents of bromine to give the dibromostannylated compounds.

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Reference：
Pyridazine – Wikipedia,
Pyridazine | C4H4N2615 – PubChem

 

One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, Application In Synthesis of 3-Bromo-6-methoxypyridazine, such as the rate of change in the concentration of reactants or products with time.In a article, mentioned the application of 17321-29-8, Name is 3-Bromo-6-methoxypyridazine, molecular formula is C5H5BrN2O

Stereospecific Synthesis of E-Alkenes through Anti-Markovnikov Hydroalkylation of Terminal Alkynes

We have developed a method for stereospecific synthesis of E-alkenes from terminal alkynes and alkyl iodides. The hydroalkylation reaction is enabled by a cooperative action of copper and nickel catalysts and proceeds with excellent anti-Markovnikov selectivity. We demonstrate the broad scope of the reaction, which can be accomplished in the presence of esters, nitriles, aryl bromides, ethers, alkyl chlorides, anilines, and a wide range of nitrogen-containing heteroaromatic compounds. Mechanistic studies provide evidence that the copper catalyst activates the alkyne by hydrocupration, which controls both the regio- and diastereoselectivity of the overall reaction. The nickel catalyst activates the alkyl iodide and promotes cross coupling with the alkenyl copper intermediate.

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Reference：
Pyridazine – Wikipedia,
Pyridazine | C4H4N2548 – PubChem

 

In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 61070-98-2, name is Pyridazine-3,4-diamine, introducing its new discovery. category: pyridazine

Synthesis of 1-substituted [1,2,3]triazolo[4,5-d]pyridazines as precursors for novel tetraazapentalene derivatives

A series of 1-substituted 4,5-diformyl-[1,2,3]triazole derivatives were prepared by 1,3-dipolar cyclo-addition of aryl azides with acetylene dicarboxaldehyde mono-diethylacetal. The triazoles were readily converted into 1-substituted [1,2,3]triazolo[4,5-d]pyridazines in good yields. The 1-(2-nitrophenyl)-[1,2,3]triazolo[4,5-d]pyridazine was found to be a useful intermediate for the generation of the novel 5H-benzo[1,2,3]triazolo[1?,2?:1,2]triazolo[4,5-d]pyridazin-6-ium inner salt ring system.

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Reference：
Pyridazine – Wikipedia,
Pyridazine | C4H4N363 – PubChem

 

One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, Computed Properties of C10H7ClN2, such as the rate of change in the concentration of reactants or products with time.In a article, mentioned the application of 20375-65-9, Name is 3-Phenyl-6-chloropyridazine, molecular formula is C10H7ClN2

Synthesis of phenyl substituted valinomycins

The synthesis is described of a modified valinomycin, which incorporates phenyl groups located around the exterior belt. The synthesis is accomplished by a build up of linear fragments using both dicyclohexylcarbodiimide- and pentafluoroester- methods of coupling. The final cyclisation is accomplished using the pentafluoroester protocol. The modified valinomycin is shown to be an effective ligand for complexation with potassium ion. Both nmr and electrochemical studies show that the modified valinomycin has similar properties to the parent valinomycin, and hence phenyl substitution around the periphery does not disrupt the network of hydrogen bonds which influence the conformation of valinomycins.

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Reference：
Pyridazine – Wikipedia,
Pyridazine | C4H4N2616 – PubChem

 

15456-86-7, Name is 4-Bromo-1,2-dihydropyridazine-3,6-dione, belongs to pyridazine compound, is a common compound. Recommanded Product: 15456-86-7In an article, once mentioned the new application about 15456-86-7.

Access to 4-alkylaminopyridazine derivatives via nitrogen-assisted regioselective pd-catalyzed reactions

3-Substituted, 6-substituted, and unsymmetrical 3,6-disubstituted 4-alkylaminopyridazines were prepared from a sequence of three chemo- and regioselective reactions combining amination and palladium-catalyzed cross-coupling reactions, such as reductive dehalogenation and Suzuki-Miyaura reactions. Extension of the methodology to Sonogashira reaction yielded a novel class of 3-substituted pyrrolopyridazines.

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Reference：
Pyridazine – Wikipedia,
Pyridazine | C4H4N2802 – PubChem

 

Synthetic Route of 1400764-35-3, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.1400764-35-3, Name is Pyridazin-4-amine hydrochloride, molecular formula is C4H6ClN3. In a Patent，once mentioned of 1400764-35-3

4,5-DIHYDROISOXAZOLE DERIVATIVES AS NAMPT INHIBITORS

The present invention provides substituted 4,5-dihydroisoxazole derivatives of formula (I), which may be therapeutically useful, more particularly NAMPT inhibitors and in which R1 R2, Y, X, “Het” and “p” have the meanings given in the specification, and pharmaceutically acceptable salts thereof that are useful in the treatment and prevention of diseases or disorder caused by an elevated level of nicotinamide phosphoribosyltransferase (NAMPT) in a mammal. The present invention also provides preparation of the compounds and pharmaceutical formulations comprising at least one of the substituted 4,5-dihydroisoxazole derivatives of formula (I) or a pharmaceutically acceptable salts or stereoisomers or N-oxide thereof.

A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. In my other articles, you can also check out more blogs about 1400764-35-3

Reference：
Pyridazine – Wikipedia,
Pyridazine | C4H4N774 – PubChem