Category: bromides-buliding-blocks

Lawson, Edward C.; Luci, Diane K.; Ghosh, Shyamali; Kinney, William A.; Reynolds, Charles H.; Qi, Jenson; Smith, Charles E.; Wang, Yuanping; Minor, Lisa K.; Haertlein, Barbara J.; Parry, Tom J.; Damiano, Bruce P.; Maryanoff, Bruce E. published the artcile< Nonpeptide Urotensin-II Receptor Antagonists: A New Ligand Class Based on Piperazino-Phthalimide and Piperazino-Isoindolinone Subunits>, Recommanded Product: Methyl 3-bromo-2-(bromomethyl)benzoate, the main research area is urotensin receptor antagonist preparation structure activity piperazino phthalimide isoindolinone.

We have discovered two related chem. series of nonpeptide urotensin-II (U-II) receptor antagonists based on piperazino-phthalimide (5 and 6) and piperazino-isoindolinone (7) scaffolds. These structure types are distinctive from those of U-II receptor antagonist series reported in the literature. One of the antagonists exhibited single-digit nanomolar potency in rat and human cell-based functional assays, as well as strong binding to the human U-II receptor. In advanced pharmacol. testing, one of the antagonists blocked the effects of U-II in vitro in a rat aortic ring assay and in vivo in a rat ear-flush model. A discussion of U-II receptor antagonist pharmacophores is presented, and a specifically defined model is suggested from tricycle compound, which has a high degree of conformational constraint.

Journal of Medicinal Chemistry published new progress about Biological ion transport, calcium. 337536-14-8 belongs to class bromides-buliding-blocks, and the molecular formula is C9H8Br2O2, Recommanded Product: Methyl 3-bromo-2-(bromomethyl)benzoate.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Li, Xiang; Huang, Wei; Liu, Yan-Qing; Kang, Jing-Wen; Xia, Dan; He, Gu; Peng, Cheng; Han, Bo published the artcile< Control of Activation Mode To Achieve Diastereodivergence in Asymmetric Syntheses of Chiral Spiropiperidinone Derivatives>, Category: bromides-buliding-blocks, the main research area is crystal mol structure furanyl tosyl azaspiro decanedione; azaspiro decanedione preparation; spiropiperidinone preparation stereoselective Michael hemiaminalization cascade aldehyde cyclic ketoamide; stereoselective Michael hemiaminalization cascade unsaturated aldehyde cyclic ketoamide; HOMO LUMO activation stereoselective Michael hemiaminalization cascade aldehyde ketoamide.

An efficient organocatalytic cascade reaction has been developed involving a Michael-hemiaminalization relay for the asym. synthesis of spiropiperidinone derivatives bearing adjacent quaternary and tertiary chiral centers via LUMO or HOMO activation. Importantly, this methodol. demonstrates that applying distinct activation modes to different substrates in the same reaction can diverge diastereoselectivity. To our knowledge, this is also one of the few published cases of primary amine catalytic [3+3] cycloaddition reactions involving α-branched β-ketoamides.

Journal of Organic Chemistry published new progress about Amides, oxo Role: RCT (Reactant), RACT (Reactant or Reagent). 3893-18-3 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO, Category: bromides-buliding-blocks.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Borrajo-Calleja, Gustavo M.; Bizet, Vincent; Mazet, Clement published the artcile< Palladium-Catalyzed Enantioselective Intermolecular Carboetherification of Dihydrofurans>, Application of C7H7BrO2, the main research area is tetrahydrofurobenzofuran preparation enantioselective intermol carboetherification palladium catalyst; carboetherification in situ generated chiral bisphosphine mono oxide ligand.

A novel enantioselective Pd-catalyzed intermol. carboetherification of dihydrofurans is reported. The in situ generation of chiral bis-phosphine mono-oxide ligands is crucial, and a general catalytic system has been identified based on this approach. It provides access to a variety of fused tetrahydrofurobenzofurans in consistently high yield and enantiomeric excess.

Journal of the American Chemical Society published new progress about Benzofurans Role: SPN (Synthetic Preparation), PREP (Preparation) (furobenzofurans). 135999-16-5 belongs to class bromides-buliding-blocks, and the molecular formula is C7H7BrO2, Application of C7H7BrO2.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Mousseau, James J.; Vallee, Frederic; Lorion, Melanie M.; Charette, Andre B. published the artcile< Umpolung Direct Arylation Reactions: Facile Process Requiring Only Catalytic Palladium and Substoichiometric Amount of Silver Salts>, Computed Properties of 6942-39-8, the main research area is palladium catalyzed umpolung direct arylation aryl halide arene; biaryl preparation umpolung direct arylation palladium catalyst; aryl iodide bromide arene reactant palladium catalyzed direct arylation.

An umpolung direct arylation process is described. The reaction requires only a catalytic amount of Pd(OAc)2 and a substoichiometric amount of silver salts, without any external base or ligand to proceed. The directed oxidative insertion of the transition metal followed by the coupling into the C-H bond of an unactivated arene has surprisingly not yet been reported, despite the clear advantages in the ease of starting material synthesis. The reaction is regioselective with regards to the arene partner, and the role of the acetate and carbonate groups has been elucidated. This methodol. adds to the very few examples of benzene coupling without the inclusion of electron-withdrawing groups to increase acidity.

Journal of the American Chemical Society published new progress about Aromatic hydrocarbons Role: RCT (Reactant), RACT (Reactant or Reagent). 6942-39-8 belongs to class bromides-buliding-blocks, and the molecular formula is C8H6BrFO2, Computed Properties of 6942-39-8.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Anbardan, Soheil Zamani; Mokhtari, Javad; Yari, Ahmad; Bozcheloei, Abolfazl Hassani published the artcile< Direct synthesis of amides and imines by dehydrogenative homo or cross-coupling of amines and alcohols catalyzed by Cu-MOF>, Synthetic Route of 3959-07-7, the main research area is amine benzyl alc copper MOF catalyst dehydrogenative cross coupling; benzamide preparation green chem; benzyl amine copper MOF catalyst dehydrogenative homo coupling; benzylphenyl methanimine preparation green chem.

Oxidative dehydrogenative homo-coupling of amines to imines and cross-coupling of amines with alcs. to amides were achieved with high to moderate yields at room temperature in THF using Cu-MOF as an efficient and recyclable heterogeneous catalyst under mild conditions. Different primary benzyl amines and alcs. were utilized for the synthesis of a wide variety of amides and imines. The Cu-MOF catalyst was recycled and reused four times without loss of catalytic activity.

RSC Advances published new progress about Aralkyl alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Synthetic Route of 3959-07-7.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Zeng, Liang; Fu, Hua; Qiao, Renzhong; Jiang, Yuyang; Zhao, Yufen published the artcile< Efficient copper-catalyzed synthesis of N-(alkyl)anthranilic acids via an ortho-substituent effect of the carboxyl group of 2-halobenzoic acids at room temperature>, Related Products of 16426-64-5, the main research area is anthranilic acid alkyl preparation copper iodide BINOL; Ullmann reaction amine halobenzoic acid amination copper BINOL.

A method for the synthesis of the title compounds [i.e., 2-(aminoalkyl)benzoic acid derivatives, N-(alkyl)anthranilic acids] is reported here. The protocol uses inexpensive copper iodide/racemic 1,1′-binaphthyl-2,2′-diol (racemic-BINOL) as catalyst/ligand system, readily available 2-halobenzoic acids and aliphatic amines as starting materials. The coupling reactions were performed at room temperature, and various functionalities in the substrates were tolerated.

Advanced Synthesis & Catalysis published new progress about Alicyclic amines Role: RCT (Reactant), RACT (Reactant or Reagent). 16426-64-5 belongs to class bromides-buliding-blocks, and the molecular formula is C7H4BrNO4, Related Products of 16426-64-5.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Yadav, Rahul; Darakshan; Bhaumick, Prabhas; Choudhury, Lokman H.; Parvin, Tasneem published the artcile< Synthesis of Pentacyclic Pyran Fused Pyrazolo Benzo[h]quinolines by Multicomponent Reaction and Their Photophysical Studies>, SDS of cas: 3893-18-3, the main research area is pentacyclic pyranpyrazolobenzoquinoline preparation photophys study; aldehyde hydroxy naphthoquinone aminopyrazole one pot three component reaction.

A one-pot method for the synthesis of pentacyclic pyran fused pyrazolo benzo[h]quinolines I (R1 = Ph, 4-chlorophenyl, anthracen-9-yl, etc.; R2 = Me, Ph, 4-methylphenyl, 4-chlorophenyl; R3 = Me, Ph, 4-methylphenyl) in acetic acid medium from the three-component reaction of 2-hydroxy-1,4-naphthoquinone, α, β-unsaturated aldehydes and 5-aminopyrazoles under the reflux conditions has been described. In this reaction, four new bonds (2 C-C, 1 C-N and 1 C-O) and two new rings (pyridine and pyran) were formed in one-pot. The novel products contain four bioactive moieties such as pyran, pyridine, pyrazole and α-naphthol. The salient features of this method are: one-pot process, short reaction time, easier purification, no need of column chromatog. and good yields of the products I. All the products I were characterized by IR, NMR and HRMS. Most of the synthesized compounds I were found highly fluorescent. Therefore, their photophys. properties were studied by UV-Visible and Fluorescence spectroscopy. Their quantum yields which were calculated and found in the range 0.243-0.424 in CHCl3 solution (c = 10-5 M) have been reported. Compound I (R1 = phenyl; R2 = phenyl; R3 = methyl) showed the highest quantum yield of 0.424.

ChemistrySelect published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 3893-18-3 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO, SDS of cas: 3893-18-3.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Cheredilin, D. N.; Sheloumov, A. M.; Senin, A. A.; Kozlova, G. A.; Afanas’ev, V. V.; Bespalova, N. B. published the artcile< Catalytic Properties of Chromium Complexes Based on 1,2-Bis(diphenylphosphino)benzene in the Ethylene Oligomerization Reaction>, Formula: C9H12BrN, the main research area is ethylene oligomerization bisdiphenylphosphinobenzene chromium complex catalytic property.

The activity of the catalyst systems of a number of diphosphine ligands and chromium complexes based on 1,2-bis(diphenylphosphino)benzene in the ethylene oligomerization reaction has been studied. Structural modifications of diphosphine ligands have been performed to create selective catalyst systems for ethylene oligomerization. It has been shown that the introduction of ortho-functional groups into one of the Ph substituents at the phosphorus atom in diphosphine ligands makes it possible to carry out the process of ethylene oligomerization to 1-hexene with the selectivity of 90 weight% and above. One of the complexes (chromium complex 15) with a functionalized diphosphine ligand has been characterized by X-ray structure anal. The influence of the change in the amount of the activator and its type on the activity of the catalyst systems has been studied. It has been shown that the replacement of some organoaluminum activator, methylaluminoxane, by trimethylaluminum does not decrease the productivity and selectivity of the catalyst systems based on diphosphine chromium complexes.

Petroleum Chemistry published new progress about Crystal structure. 51605-97-1 belongs to class bromides-buliding-blocks, and the molecular formula is C9H12BrN, Formula: C9H12BrN.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Li, Baixue; Liu, Yong; Nie, Han; Qin, Anjun; Tang, Ben Zhong published the artcile< Phosphazene Base-Mediated Azide-Alkyne Click Polymerization toward 1,5-Regioregular Polytriazoles>, Safety of 1,2-Bis(4-bromophenyl)-1,2-diphenylethene, the main research area is phosphazene base azide alkyne click polymerization regioregular polytriazole.

Cu(I)-catalyzed azide-alkyne click polymerization has become a powerful tool for the construction of 1,4-regioregular polytriazoles (PTAs). However, the polymerization toward the synthesis of 1,5-regioregular PTAs has been rarely reported, and the structure-property relationship between 1,5- and 1,4-regioregular PTAs needs to be studied further. In this work, an efficient superbase of phosphazene base (t-BuP4)-mediated azide-alkyne click polymerization was developed, and soluble and thermally stable 1,5-regioregular PTAs with high mol. weights (Mw up to 26 600) were generated in high yields (up to 99%). The relationship between the regiostructures and the thermal stability, light refractivity, photophys. properties, electrochem. behaviors of PTAs was investigated, and the results indicate that the 1,4-regioregular PTA exhibits better conjugation and planarity than that of the 1,5-regioregular one. Thus, this work not only develops a powerful t-BuP4-mediated azide-alkyne click polymerization for the preparation of 1,5-regioregular PTAs but also provides a platform for investigating the structure-property relationship of PTAs, which will guide the design of new PTAs for diverse applications.

Macromolecules (Washington, DC, United States) published new progress about Azide-alkyne 1,3-dipolar cycloaddition reaction. 184239-35-8 belongs to class bromides-buliding-blocks, and the molecular formula is C26H18Br2, Safety of 1,2-Bis(4-bromophenyl)-1,2-diphenylethene.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Qi, Qingkai; Jiang, Shan; Qiao, Qinglong; Wei, Jinbei; Xu, Bin; Lu, Xiaocun; Xu, Zhaochao; Tian, Wenjing published the artcile< Direct observation of intramolecular coplanarity regulated polymorph emission of a tetraphenylethene derivative>, Category: bromides-buliding-blocks, the main research area is tetraphenylethene preparation crystal polymorphism electronic transition.

Polymorphism makes it possible to clarify the relationship between emission property and crystal structure. However, based on the exact mol. conformation in tetraphenylethene polymorphisms, it is still challenging to evaluate the difference of intramol. coplanarity without the support of calculation because of the complex combination of four different torsion angles between four peripheral benzenes and the central ethylene plane. Here, by using a di-formyl-functionalized tetraphenylethene derivative, two ideal polymorphisms with a consistent trend of the corresponding torsion angles have been obtained. For the first time, we explicitly demonstrated that intramol. coplanarity is the underlying cause of the polymorphism-dependent emission of tetraphenylethene derivatives

Chinese Chemical Letters published new progress about Bathochromic effect. 184239-35-8 belongs to class bromides-buliding-blocks, and the molecular formula is C26H18Br2, Category: bromides-buliding-blocks.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary