Category: chlorides-buliding-blocks

Gramstad, Thor published the artcileStudies of hydrogen bonding. Part XXVIII. Hydrogen bond association of phenol with 5,5-dimethyl-2-oxo-1,3,2-dioxaphosphorinanes and diethylphosphonates, SDS of cas: 866-23-9, the publication is Acta Chemica Scandinavica, Series B: Organic Chemistry and Biochemistry (1977), B31(5), 345-53, database is CAplus.

The association constant and enthalpy of formation of the equilibrium between phenol and twelve 5,5-dimethyl-2-oxo-1,3,2-dioxaphosphorinanes I (R = Cl, CCl3, OMe, Ph, NMe2, etc.) and six diethylphosphonates (EtO)2P(O)R1 (R1 = CCl3, SMe, CPh3, etc.) were determined The association constant, enthalpy of association, half band width, ν1/2, of the complexed O-H bond, P(O) bond moment, μPO, and excess charge d., Δq, on the phosphoryl O give linear relations with the O-H frequency shift, ΔνOH. The calculated P(O) bond moment in the axial and equatorial position gives a linear correlation with the exptl. P(O) stretching frequency. Furthermore, the square root of the addnl. dipole moment, Δμ1/2, due to H bond formation, correlates linearly with the association constant, the O-H frequency shift, and with the half band width. A close relationship between band width of the complexed O-H bond and the strength and polarity of the H bonded complex is deduced.

Acta Chemica Scandinavica, Series B: Organic Chemistry and Biochemistry 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, SDS of cas: 866-23-9.

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

Ishizuka, Tomoya published the artcileProton-Coupled Electron Shuttling in a Covalently Linked Ruthenium-Copper Heterodinuclear Complex, Recommanded Product: 2-Chloroisonicotinic acid, the publication is Journal of the American Chemical Society (2011), 133(46), 18570-18573, database is CAplus and MEDLINE.

A heterodinuclear complex (I) based on a Ru^II-TPA [TPA = tris(2-pyridylmethyl)amine] complex having a peripheral Cu^II(bpy)₂ (bpy = 2,2′-bipyridine) group bonded through an amide linkage displayed reversible intramol. electron transfer between the Ru and Cu complex units that can be controlled by protonation and deprotonation of the bridging amide moiety.

Journal of the American Chemical Society published new progress about 6313-54-8. 6313-54-8 belongs to chlorides-buliding-blocks, auxiliary class Pyridine,Chloride,Carboxylic acid, name is 2-Chloroisonicotinic acid, and the molecular formula is C6H4ClNO2, Recommanded Product: 2-Chloroisonicotinic acid.

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

Sanchez, Raquel published the artcileMinimization of the effect of silicon chemical form in xylene matrices on ICP-AES performance, Formula: C7H16Cl2Si, the publication is Journal of Analytical Atomic Spectrometry (2009), 24(10), 1382-1388, database is CAplus.

It was shown previously that the influence of the silicon chem. form could be minimized in ICP-AES by using high efficiency sample introduction systems. The effects of two of the most different silicon chem. forms were minimized in ICP-AES by using near total sample consumption systems. The two tested devices were a single pass spray chamber equipped with wall heating (heated torch integrated sample introduction system, h-TISIS) and a demountable direct injection high efficiency nebulizer (d-DIHEN). A room temperature TISIS and a cyclonic spray chamber were taken as the reference systems. Solutions containing silicon as six different compounds in xylene were prepared and analyzed through ICP-AES. At low liquid flow rates, the h-TISIS improves the sensitivity and the limits of detection as compared to the d-DIHEN. In contrast, shorter wash-out times were obtained for the d-DIHEN. As regards to the effect of the silicon chem. form, h-TISIS and d-DIHEN have minimized it with respect to a conventional cyclonic spray chamber.

Journal of Analytical Atomic Spectrometry 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, Formula: C7H16Cl2Si.

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

Sanchez, Raquel published the artcileEffect of the silicon chemical form on the emission intensity in inductively coupled plasma atomic emission spectrometry for xylene matrices, COA of Formula: C7H16Cl2Si, the publication is Journal of Analytical Atomic Spectrometry (2009), 24(4), 391-401, database is CAplus.

Silicon is present in petrol products under very different chem. forms. The effect of the silicon chem. form on the sensitivity was studied by inductively coupled plasma at. emission spectrometry (ICP-AES). Solutions containing sixteen different silicon organic compounds with the same silicon concentration were prepared in xylene. The studied compounds were: six siloxanes, nine silanes and a silicate. Their b.ps. ranged from 101° (hexamethyldisiloxane) to 310° (2,3,4-(epoxycyclohexyl)ethyltrimetoxysilane). The ICP-AES signal depended strongly on the silicon compound Thus, for a commonly used sample introduction system consisting of a cross-flow pneumatic nebulizer coupled to a Ryton double pass spray chamber, the signal varied by a factor of up to 17, depending on the compound For most studied cases, some siloxanes yielded higher emission intensities than silanes. Under some circumstances, hexylmethyldichlorosilane and dimethyldodecylchlorosilane also produced higher signals than the other studied silanes. To elucidate the possible mechanisms for these changes, experiments were performed to verify whether the origin could be assigned either to the plasma or to the sample introduction system. Using the Mg II/Mg I ratio, no significant change in the plasma characteristics was actually observed As regards the sample introduction system, (i) the primary aerosol, (ii) the transport and memory effects using continuous and discrete introduction modes, an alternative spray chamber, and a total consumption system (the TISIS system), and (iii) the tertiary aerosol, via an impactor, were studied. Addnl. experiments were carried out with an ultrasonic nebulizer. The Si behavior was compared to other elements, such as Cu, Mg, Mn and Zn. The Si behavior was not related to the pneumatic nebulizer and suggested that a fraction of silicon was transported towards the plasma as a vapor when it was present as hexamethyldisiloxane (i.e., the compound with the lowest b.p. among the species studied). In any case, the variability of the signal induced by the different silicon chem. forms was less significant for the TISIS than for cyclonic and ultrasonic nebulizer. The observed results were specific to silicon as the signal of the other elements did not significantly change with silicon chem. form. As a consequence, internal standardization was not appropriate for mitigating interferences on silicon when petroleum products were analyzed.

Journal of Analytical Atomic Spectrometry 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, COA of Formula: C7H16Cl2Si.

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

Cardenas, Mariel M. published the artcileEnantioselective Synthesis of Pyrrolopyrimidine Scaffolds through Cation-Directed Nucleophilic Aromatic Substitution, Related Products of chlorides-buliding-blocks, the publication is Organic Letters (2018), 20(7), 2037-2041, database is CAplus and MEDLINE.

The catalytic enantioselective synthesis of 3-aryl-substituted pyrrolopyrimidines (PPYs), a common motif in drug discovery, is achieved through a kinetic resolution via quaternary ammonium salt-catalyzed nucleophilic aromatic substitution (S_NAr). Both enantioenriched products and starting materials can be functionalized with no observed racemization to give enantiodivergent access to diverse chiral analogs of an important class of kinase inhibitor. One of the compounds was found to be a potent and selective inhibitor of breast tumor kinase.

Organic Letters published new progress about 145349-62-8. 145349-62-8 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Boronic acid and ester,Benzene,Boronic Acids, name is 2-Chloro-4-methylphenylboronic acid, and the molecular formula is C7H8BClO2, Related Products of chlorides-buliding-blocks.

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

Pasha, Maira published the artcileCatalytic enantioselective oxa-hetero-Diels-Alder reactions of enones with aryl trifluoromethyl ketones: synthesis of tetrahydropyranones, Recommanded Product: ((1S,4R)-7,7-Dimethyl-2-oxobicyclo[2.2.1]heptan-1-yl)methanesulfonyl chloride, the publication is Heterocycles (2021), 103(1), 198-204, database is CAplus.

Diastereo- and enantioselective oxa-hetero-Diels-Alder reactions of enones with aryl trifluoromethyl ketones that afford tetrahydropyranone derivatives catalyzed by an amine-based catalyst system are reported. The major diastereomers of the tetrahydropyranone products obtained in these reactions had the relative stereochem. different from that of the previously synthesized tetrahydropyranone derivatives

Heterocycles 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, Recommanded Product: ((1S,4R)-7,7-Dimethyl-2-oxobicyclo[2.2.1]heptan-1-yl)methanesulfonyl chloride.

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

Yanagi, Tomoyuki published the artcileAsymmetric systematic synthesis, structures, and (chir)optical properties of a series of dihetero[8]helicenes, Safety of ((1S,4R)-7,7-Dimethyl-2-oxobicyclo[2.2.1]heptan-1-yl)methanesulfonyl chloride, the publication is Chemical Science (2021), 12(8), 2784-2793, database is CAplus and MEDLINE.

A series of dihetero[8]helicenes (P)/(M)/(rac)-I (R = O, S, NH, SO₂) have been systematically synthesized in enantiomerically enriched forms by utilizing the characteristic transformations of the organosulfur functionality. The synthetic route begins with assembling a ternaphthyl II common synthetic intermediate from 2-naphthol and 2,7-bis(phenethylsulfinyl)naphthalene through an extended Pummerer reaction followed by facile multi-gram-scale resolution The subsequent cyclization reactions into dioxa- and dithia[8]helicenes (P)/(M)/(rac)-I take place with excellent axial-to-helical chirality conversion. Dithia[8]helicenes (P)/(M)/(rac)-III are further transformed into the nitrogen (P)/(M)/(rac)-I and the carbon analogs (P)/(M)/(rac)-IV and (P)/(M)/(rac)-V by replacing the two endocyclic sulfur atoms via S_NAr-based skeletal reconstruction. The efficient systematic synthesis has enabled comprehensive evaluation of phys. properties, which has clarified the effect of the endocyclic atoms on their structures and (chir)optical properties as well as the unexpected conformational stability of the common helical framework.

Chemical Science 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 C10H15NO, Safety of ((1S,4R)-7,7-Dimethyl-2-oxobicyclo[2.2.1]heptan-1-yl)methanesulfonyl chloride.

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

Tan, Fang-Fang published the artcileUtilization of a Hydrogen Source from Renewable Lignocellulosic Biomass for Hydrogenation of Nitroarenes, COA of Formula: C6H3ClFNO2, the publication is ChemCatChem (2019), 11(16), 4189-4195, database is CAplus.

Herein, the utilization of a hydrogen source from renewable lignocellulosic biomass, one of the most abundant renewable sources in nature, for a hydrogenation of nitroarenes was described. The hydrogenation was demonstrated by reduction of nitroarenes to arylamines e.g., I in up to 95% yields. Mechanism studies suggested that the hydrogenation occurred via a hydrogen transformation pathway.

ChemCatChem 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 C65H82N2O18S2, COA of Formula: C6H3ClFNO2.

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

Wang, Bin published the artcileBase-mediated tandem sulfonylation and oximation of alkenes in water, HPLC of Formula: 32333-53-2, the publication is Green Chemistry (2017), 19(24), 5794-5799, database is CAplus.

A base-mediated bifunctionalization of alkenes such as ethenyl-benzene, methylene-cyclopentane, 1-hexene, etc. for the synthesis of α-sulfonylethanone oximes RC(=NOH)CH(R¹)SO₂R² (R = Ph, naphthalen-2-yl, (CH₂)₃CH₃, 4-(chloromethyl)phenyl, etc.; RR¹ = -(CH₂)₃-, R¹ = H, Br; R² = 4-methoxyphenyl, thiophen-2-yl, naphthalen-2-yl, CH₃C(O), etc.) was developed in water under metal-free conditions. This reaction features a wide substrate scope and facile starting materials to afford the desired products in high yields.

Green Chemistry published new progress about 32333-53-2. 32333-53-2 belongs to chlorides-buliding-blocks, auxiliary class Trifluoromethyl,Fluoride,Chloride,Sulfonyl chlorides,Benzene, name is 4-Chloro-3-(trifluoromethyl)benzenesulfonyl Chloride, and the molecular formula is C12H10FeO4, HPLC of Formula: 32333-53-2.

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

Li, Ying-Hong published the artcileNovel 12N-substituted matrinanes as potential anti-coxsackievirus agents, COA of Formula: C9H5ClO4S, the publication is Bioorganic & Medicinal Chemistry Letters (2017), 27(4), 829-833, database is CAplus and MEDLINE.

A series of novel 12N-substituted matrinane derivatives were synthesized and evaluated for their activities against coxsackievirus type B3 (CVB3) taking compound I as the lead. SAR anal. indicated that the introduction of a suitable heteroaromatic ring on the 12N-atom might be beneficial for the activity. Among them, compound II exhibited the highest potency against all CVB serotypes as well as CVA16 with IC₅₀ values ranging from 2.02 μM to 7.41 μM, indicating a broad-spectrum anti-coxsackieviruse effect. Furthermore, compound II demonstrated a good safety profile in vivo. Thus, we consider 12N-substituted matrinanes to be a promising family of anti-coxsackievirus agents, and compound II to be a promising drug candidate in the treatment of various diseases related to coxsackievirus infection.

Bioorganic & Medicinal Chemistry Letters 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, COA of Formula: C9H5ClO4S.

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