Category: chlorides-buliding-blocks

Ma, Hao published the artcileSynthesis of Bridging Chiral p-tert-Butylcalix[4]arenes with One and Two Carbamoyl Bridge-Substituents through Anionic Ortho-Fries Rearrangement, SDS of cas: 21286-54-4, the publication is ChemistrySelect (2020), 5(21), 6274-6277, database is CAplus.

Bridging chiral p-tert-butylcalix[4]arenes (p-t-Bu-BCC’s) with different N-substituted carbamoyl bridge-substituents (N,N-dimethylcarbamoyl, N,N-diethylcarbamoyl and morpholinocarbonyl) were successfully prepared through anionic ortho-Fries rearrangement from mono-O-carbamates of 1,3-dipropyl-p-tert-butylcalix[4]arene in 65-75% yield. In addition, p-t-Bu-BCC with two N,N-dimethylcarbamoyl bridge-substituents was produced by this method from mono-O-carbamate of p-t-Bu-BCC with one N,N-dimethylcarbamoyl bridge-substituent in 71% yield. However, the synthesis of p-t-Bu-BCC with addnl. carbamoyl bridge-substituents using this method could not be attempted, as the required rearrangement precursor failed to be synthesized. Finally, the racemic p-t-Bu-BCC with morpholinocarbonyl bridge-substituent was optically resolved into a pair of enantiomers, whose absolute configurations were determined through ROESY anal. and ECD comparison.

ChemistrySelect published new progress about 21286-54-4. 21286-54-4 belongs to chlorides-buliding-blocks, auxiliary class Chiral,Chloride,Sulfonyl chlorides,Aliphatic cyclic hydrocarbon,Ketone, name is ((1S,4R)-7,7-Dimethyl-2-oxobicyclo[2.2.1]heptan-1-yl)methanesulfonyl chloride, and the molecular formula is C10H15ClO3S, SDS of cas: 21286-54-4.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Forster, Michael published the artcileImproved Multigram Route to a Tricyclic Key Intermediate for Dibenzosuberone-Based p38 Inhibitors via an Optimized Early-Stage Heck Coupling, Application In Synthesis of 620-20-2, the publication is Organic Process Research & Development (2021), 25(8), 1831-1840, database is CAplus.

The p38α MAP kinase has been a heavily investigated target in the last two decades. The structural class of dibenzosuberone-based p38 inhibitors, exemplified by the promising candidate skepinone-L, was already successfully validated in several in vivo models of inflammatory as well as oncol. indications. The increasing demand of key intermediates and final compounds caused by the ongoing development of this inhibitor class urged the conception of an optimized route for the preparation of the core dibenzosuberone scaffold in multigram quantities. Rerouting of the initial discovery route resulted in an almost 4-fold increase of overall yield to 46%, the elimination of chromatog. purification, and the substitution of two critical reaction steps, which hindered a feasible scale-up. The key modification was the introduction and optimization of an early-stage Heck coupling based on Buchwald precatalysts allowing consistently high yields (ca. 90%) at multigram scales with a favorably low Pd loading of 0.1 mol %. This newly developed synthetic access to the dibenzosuberone intermediate 2-chloro-7-hydroxy-10,11-dihydro-5H-dibenzo[a,d][7]annulen-5-one is capable of ensuring the supply of skepinone-L and other candidates during further development.

Organic Process Research & Development published new progress about 620-20-2. 620-20-2 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Benzyl chloride,Benzene, name is 3-Chlorobenzylchloride, and the molecular formula is C7H6Cl2, Application In Synthesis of 620-20-2.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Giardina, Sarah F. published the artcileNovel, Self-Assembling Dimeric Inhibitors of Human β Tryptase, SDS of cas: 918331-73-4, the publication is Journal of Medicinal Chemistry (2020), 63(6), 3004-3027, database is CAplus and MEDLINE.

β-Tryptase, a homotetrameric serine protease, has four identical active sites facing a central pore, presenting an optimized setting for the rational design of bivalent inhibitors that bridge two adjacent sites. Using diol, hydroxymethyl phenols or benzoyl Me hydroxamates, and boronic acid chemistries to reversibly join two [3-(1-acylpiperidin-4-yl)phenyl]methanamine core ligands, we have successfully produced a series of self-assembling heterodimeric inhibitors. These heterodimeric tryptase inhibitors demonstrate superior activity compared to monomeric modes of inhibition. X-ray crystallog. validated the dimeric mechanism of inhibition, and compounds demonstrated high selectivity against related proteases, good target engagement, and tryptase inhibition in HMC1 xenograft models. Screening 3872 possible combinations from 44 boronic acid and 88 diol derivatives revealed several combinations that produced nanomolar inhibition, and seven unique pairs produced greater than 100-fold improvement in potency over monomeric inhibition. These heterodimeric tryptase inhibitors demonstrate the power of target-driven combinatorial chem. to deliver bivalent drugs in a small mol. form.

Journal of Medicinal Chemistry published new progress about 918331-73-4. 918331-73-4 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Boronic acid and ester,Carboxylic acid,Benzene,Boronate Esters,Boronic Acids,Boronic acid and ester,Boronate Esters, name is 4-Chloro-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoic acid, and the molecular formula is C13H16BClO4, SDS of cas: 918331-73-4.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Cordes, Jens published the artcilemeta-selective aromatic borylation as key step in the synthesis of poipuol, Recommanded Product: Diethyltrichloromethylphosphonate, the publication is Synthesis (2008), 2217-2220, database is CAplus.

A synthesis of the marine natural product poipuol is reported. The key reaction sequence consists of an iridium-catalyzed meta-selective CH-borylation followed by the conversion of the resulting arylboronic ester into an aryl chloride.

Synthesis published new progress about 866-23-9. 866-23-9 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Diethyltrichloromethylphosphonate, and the molecular formula is C5H10Cl3O3P, Recommanded Product: Diethyltrichloromethylphosphonate.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Griffiths, V. S. published the artcileDipole-moment measurements of coumarin derivatives and their orientation at a dropping-mercury electrode, SDS of cas: 10543-42-7, the publication is Journal of the Chemical Society (1963), 4941-5, database is CAplus.

The dipole moments of coumarin and its 6-amino-, 6-acetamido-, 6-sulfamoyl-, and 6-chlorosulfonyl derivatives were determined Coumarin derivatives are adsorbed with the dipole moment parallel to the Hg surface.

Journal of the Chemical Society published new progress about 10543-42-7. 10543-42-7 belongs to chlorides-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Chloride,Sulfonyl chlorides,Ester, name is Coumarin-6-sulfonyl chloride, and the molecular formula is C9H5ClO4S, SDS of cas: 10543-42-7.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Chen, Kuang-Yen published the artcileTetrapodal Molecular Switches and Motors: Synthesis and Photochemistry, Application In Synthesis of 219537-97-0, the publication is Journal of Organic Chemistry (2014), 79(15), 7032-7040, database is CAplus and MEDLINE.

The design, synthesis, and dynamic behavior of a series of novel tetrapodal mol. switches and motors containing common functional groups for attachment to various inorganic and organic surfaces are presented. Using a Diels-Alder reaction, an anthracene unit with four functionalized alkyl substituents (“legs”) was coupled to maleimide-functionalized mol. switches or motors under ambient conditions. Terminal functional groups at the “legs” include thioacetates and azides, making these switches and motors ideal candidates for attachment to metallic or alkyne-functionalized surfaces. UV/vis absorption spectroscopy shows that the mol. switches and motors retain their ability to undergo reversible photoinduced and/or thermally induced structural changes after attachment to the tetrapodal anthracene.

Journal of Organic Chemistry published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C15H14Cl2S2, Application In Synthesis of 219537-97-0.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Wang, Li published the artcileDirect Radiofluorination of Arene C-H Bonds via Photoredox Catalysis Using a Peroxide as the Terminal Oxidant, Category: chlorides-buliding-blocks, the publication is Organic Letters (2020), 22(20), 7971-7975, database is CAplus and MEDLINE.

Herein, we describe an organic photoredox system for direct arene C-H radiofluorination, using a peroxide oxidizing agent and LEDs as the light source. In conjunction with an optimized photocatalyst and a microtubing reactor, this system is applicable to a range of electron-rich aromatics and heteroaromatics We also demonstrate the feasibility of C-H radiofluorination without an azeotropic drying step, which greatly simplifies the workflow of the labeling process.

Organic Letters published new progress about 637-07-0. 637-07-0 belongs to chlorides-buliding-blocks, auxiliary class Inhibitor,Cell Cycle,PPAR, name is Ethyl 2-(4-chlorophenoxy)-2-methylpropanoate, and the molecular formula is C20H17FO4S, Category: chlorides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Sorribes, Ivan published the artcileChemoselective Transfer Hydrogenation to Nitroarenes Mediated by Cubane-Type Mo₃S₄ Cluster Catalysts, SDS of cas: 350-30-1, the publication is Angewandte Chemie, International Edition (2012), 51(31), 7794-7798, S7794/1-S7794/4, database is CAplus and MEDLINE.

Cubane-type Mo₃S₄ cluster compounds catalyzed transfer hydrogenation to nitro arenes or nitro heteroarenes to give aromatic amines. E.g., in presence of formic acid and NEt₃ as the reducing agent, [Mo₃S₄H₃(dmpe)₂]BPh₄ catalyzed the transfer hydrogenation of 4-O₂NC₆H₄NH₂ to give 90% p-phenylenediamine.

Angewandte Chemie, International Edition published new progress about 350-30-1. 350-30-1 belongs to chlorides-buliding-blocks, auxiliary class Fluoride,Chloride,Nitro Compound,Benzene, name is 3-Chloro-4-fluoronitrobenzene, and the molecular formula is C7H6Cl2O, SDS of cas: 350-30-1.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Lochmueller, C. H. published the artcileQuantitative photoacoustic spectroscopy of chemically-modified silica surfaces, Formula: C9H20Cl2Si, the publication is Analytica Chimica Acta (1980), 118(1), 101-8, database is CAplus.

The degree of surface coverage on chem.-modified silica gel was determined by using photoacoustic spectroscopy. Vibrational overtones in the near IR were employed for the examination of modified materials containing bonded aliphatic, aromatic, and aminoalkyl functions. A linear relation between photoacoustic signal amplitude and C or N content of the chem.-modified surface was obtained.

Analytica Chimica Acta published new progress about 14799-93-0. 14799-93-0 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(methyl)(octyl)silane, and the molecular formula is C9H20Cl2Si, Formula: C9H20Cl2Si.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Lochmueller, C. H. published the artcileQuantitative photoacoustic spectroscopy of chemically-modified silica surfaces, Recommanded Product: Dichloro(hexyl)(methyl)silane, the publication is Analytica Chimica Acta (1980), 118(1), 101-8, database is CAplus.

The degree of surface coverage on chem.-modified silica gel was determined by using photoacoustic spectroscopy. Vibrational overtones in the near IR were employed for the examination of modified materials containing bonded aliphatic, aromatic, and aminoalkyl functions. A linear relation between photoacoustic signal amplitude and C or N content of the chem.-modified surface was obtained.

Analytica Chimica Acta published new progress about 14799-94-1. 14799-94-1 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(hexyl)(methyl)silane, and the molecular formula is C7H16Cl2Si, Recommanded Product: Dichloro(hexyl)(methyl)silane.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics