Tag: M.W=200-250

Tian, Qingqiang published the artcileSelective C-F Bond Etherification of Trifluoromethylalkenes with Phenols, HPLC of Formula: 864725-22-4, the publication is Journal of Organic Chemistry (2022), 87(16), 10908-10916, database is CAplus and MEDLINE.

A novel protocol for the C-F bond etherification of trifluoromethylalkenes and phenols was reported. A variety of alkenyl difluoroaryloxy ethers were obtained with good chemoselectivity and functional group tolerance. DFT calculation results and control experiments suggested that metal ion Cs⁺ might be involved in this defluorooxylation. Furthermore, the desired product exhibited a good insecticidal activity.

Journal of Organic Chemistry published new progress about 864725-22-4. 864725-22-4 belongs to chlorides-buliding-blocks, auxiliary class Trifluoromethyl,Fluoride,Chloride,Alkenyl,Benzene, name is 1,3-Dichloro-5-(3,3,3-trifluoroprop-1-en-2-yl)benzene, and the molecular formula is C9H8O4, HPLC of Formula: 864725-22-4.

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

Cheng, Huicheng published the artcileHighly efficient synthesis of aryl and heteroaryl trifluoromethyl ketones via o-iodoxybenzoic acid (IBX), Product Details of C8H4ClF3O, the publication is Tetrahedron Letters (2013), 54(33), 4483-4486, database is CAplus.

A 2-step process for the synthesis of aryl and heteroaryl trifluoromethyl ketones from the corresponding aldehydes is described. Trifluoromethyl alcs. were prepared from aryl and heteroaryl aldehydes in excellent yields using catalytic amounts of K₂CO₃. The trifluoromethyl alcs. were then oxidized conveniently and efficiently by 2-iodoxybenzoic acid (IBX) under mild conditions to give the desired functionalized aryl and heteroaryl trifluoromethyl ketones.

Tetrahedron Letters published new progress about 5860-95-7. 5860-95-7 belongs to chlorides-buliding-blocks, auxiliary class Trifluoromethyl,Fluoride,Chloride,Benzene,Ketone, name is 1-(2-Chlorophenyl)-2,2,2-trifluoroethanone, and the molecular formula is C8H4ClF3O, Product Details of C8H4ClF3O.

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

Jung, Eun Ae published the artcileSynthesis and photoelectronic properties of thermally stable poly[oxy(2,7-fluoren-9-onenylene)oxy(diorganosilylene)]s, HPLC of Formula: 14799-93-0, the publication is Bulletin of the Korean Chemical Society (2012), 33(6), 2031-2036, database is CAplus.

Melt copolymerization reactions of several bis(diethylamino)silane derivatives, bis(diethylamino)methylphenylsilane, bis(diethylamino)methyloctylsilane, 1,2-bis(diethylamino)tetramethyldisilane, and 1,3-bis(diethylamino)tetramethyldisiloxane, with 2,7-dihydroxyfluoren-9-one were carried out to yield poly[oxy(2,7-fluoren-9-onenylene)oxy(diorganosilylene)]s bearing the fluoren-9-one fluorescent aromatic group in the polymer main chain: poly[oxy(2,7-fluoren-9-onenylene)oxy(methylphenylsilylene)], poly[oxy(2,7-fluoren-9-onenylene)oxy(methyloctylsilylene)], poly[oxy(2,7-fluoren-9-onenylene)oxy(tetramethyldisilylene)], and poly[oxy(2,7-fluoren-9-onenylene)oxy(tetramethyldisiloxanylene)]. These polymeric materials are soluble in common organic solvents such as CHCl₃ and THF. FTIR spectra of all the materials reveal characteristic Si-O-C stretching frequencies at 1012-1018 cm^-1. In the THF solution, the prepared materials show strong maximum absorption peaks at 258-270 nm, strong maximum excitation peaks at 260-280 nm, and strong maximum fluorescence emission bands at 310-420 nm. TGA thermograms suggest that most of the polymers are essentially stable to 200° without any weight loss and up to 300° with only a weight loss of less than 5% in nitrogen.

Bulletin of the Korean Chemical Society 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, HPLC of Formula: 14799-93-0.

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

Kim, Ji Ho published the artcileOxidative coupling polymerization of diethynylsilane derivatives and 1,2-diethynyl-1,1,2,2-tetramethyldisilane, Category: chlorides-buliding-blocks, the publication is Bulletin of the Korean Chemical Society (2006), 27(6), 869-874, database is CAplus.

The Glaser oxidative coupling polymerizations was performed on diethynyldiphenylsilane, diethynylmethylphenylsilane, diethynylmethyloctylsilane, and 1,2-diethynyl-1,1,2,2-tetramethyldisilane to afford polycarbosilanes containing diethynyl and organosilane groups in the main chain, such as poly(diethynyldiphenylsilane), poly(diethynylmethylphenylsilane), poly(diethynylmethyloctylsilane), and poly(1,2-diethynyl-1,1,2,2-tetramethyldisilane), resp. These obtained materials are almost insoluble in common organic solvents such as CHCl₃ and THF probably due to the presence of a rigid rod diacetylene group along the polymer main chain. Therefore, the polymers were characterized using several spectroscopic methods in solid state. FTIR spectra of all the polymeric materials show that the characteristic CC stretching frequencies appear at 2147-2154 cm^-1, in particular. The polymers in the solid state exhibit that the strong maximum excitation peaks appear at 260-283 nm and the strong maximum fluorescence emission bands at 367-412 nm, especially Thermogravimetric anal. of the materials shows that about 55-68% of the initial polymer weights remain at 400°C in nitrogen.

Bulletin of the Korean Chemical Society 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, Category: chlorides-buliding-blocks.

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

Yun, Seung Beom published the artcileSynthesis and properties of poly(carbomethyloctylsiloxane)s by melt copolymerization of bis(diethylamino)methyloctylsilane and aryldiol derivatives, HPLC of Formula: 14799-93-0, the publication is Bulletin of the Korean Chemical Society (2008), 29(12), 2373-2378, database is CAplus.

We carried out the melt copolymerizations of bis(diethylamino)methyloctylsilane with several aryldiols to afford poly(carbomethyloctylsiloxane)s containing fluorescent aromatic chromophore groups in the polymer main chain: poly(oxybiphenyloxymethyloctyl silane), poly(oxy(4,4′-isopropylidene)diphenyleneoxymethyloctylsilane), poly(oxy(4,4′-hexafluoroisopropylidene)diphenyleneoxymethyloctylsilane),poly(oxy-2,6-naphthalenediyloxymethyloctylsilane),and poly(oxyphenyleneoxymethyloctylsilane). These materials are soluble in common organic solvents such as CHCl₃ and THF. FTIR spectra of all the polymeric materials show the characteristic Si-O-C stretching frequencies at 1051-1082 cm^-1. The polymers in THF solution exhibit strong maximum absorption peaks at 263-341 nm with the strong maximum excitation peaks at 253-325 nm, and strong maximum fluorescence emission bands at 300-420 nm. According to TGA all the polymers are stable up to 200 °C with weight loss of less than 9% in nitrogen.

Bulletin of the Korean Chemical Society 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 C7H8BBrO3, HPLC of Formula: 14799-93-0.

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

Wang, Sheng-Li published the artcileSynthesis of biphenylenes and their higher homologues by cyclization of aryne derivatives, Synthetic Route of 1451393-45-5, the publication is Angewandte Chemie, International Edition (2017), 56(46), 14694-14697, database is CAplus and MEDLINE.

This investigation demonstrates that a series of biphenylenes, e.g., I, can be easily prepared from their corresponding halobiphenyls by the cyclization of in situ generated 2′,3′-didehydro-2-lithiobiphenyls at low temperature Two remarkable advantages of this synthetic method include the lack of any need for transition-metal catalysts or reagents in the cyclization, and the ability to obtain C1-functionalized products by treating the reaction intermediate 1-lithiobiphenylene with an electrophilic reagent. π-Extended derivatives, such as benzobiphenylenes, dibenzobiphenylene, linear/angular [3]phenylenes, and biphenyleno[2,3-b]biphenylenes, were synthesized similarly using suitable biaryls or teraryls.

Angewandte Chemie, International Edition published new progress about 1451393-45-5. 1451393-45-5 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Bromide,Boronic acid and ester,Benzene,Boronic Acids,Boronic acid and ester, name is (2-Bromo-4-chlorophenyl)boronic acid, and the molecular formula is C22H32O2, Synthetic Route of 1451393-45-5.

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

Karad, Somnath Narayan published the artcileEnantioselective Synthesis of Chiral Cyclopent-2-enones by Nickel-Catalyzed Desymmetrization of Malonate Esters, Quality Control of 480438-56-0, the publication is Angewandte Chemie, International Edition (2018), 57(29), 9122-9125, database is CAplus and MEDLINE.

The enantioselective synthesis of highly functionalized chiral cyclopent-2-enones by the reaction of alkynyl malonate esters with arylboronic acids is described. These desymmetrizing arylative cyclizations are catalyzed by a chiral phosphinooxazoline/nickel complex, and cyclization is enabled by the reversible E/Z isomerization of alkenylnickel species. The general methodol. is also applicable to the synthesis of 1,6-dihydropyridin-3(2H)-ones.

Angewandte Chemie, International Edition published new progress about 480438-56-0. 480438-56-0 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Boronic acid and ester,Benzene,Ether,Boronic Acids,Boronic acid and ester, name is 3-Chloro-4-isopropoxyphenylboronic acid, and the molecular formula is C9H12BClO3, Quality Control of 480438-56-0.

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

von Hellfeld, Rebecca published the artcileSpecificity of time- and dose-dependent morphological endpoints in the fish embryo acute toxicity (FET) test for substances with diverse modes of action: the search for a “fingerprint”, Synthetic Route of 637-07-0, the publication is Environmental Science and Pollution Research (2022), 29(11), 16176-16192, database is CAplus and MEDLINE.

The fish embryo acute toxicity (FET) test with the zebrafish (Danio rerio) embryo according to OECD TG 236 was originally developed as an alternative test method for acute fish toxicity testing according to, e.g., OECD TG 203. Given the versatility of the protocol, however, the FET test has found application beyond acute toxicity testing as a common tool in environmental hazard and risk assessment. Whereas the standard OECD guideline is restricted to four core endpoints (coagulation as well as lack of somite formation, heartbeat, and tail detachment) for simple, rapid assessment of acute toxicity, further endpoints can easily be integrated into the FET test protocol. This has led to the hypothesis that an extended FET test might allow for the identification of different classes of toxicants via a “fingerprint” of morphol. observations. To test this hypothesis, the present study investigated a set of 18 compounds with highly diverse modes of action with respect to acute and sublethal endpoints. Especially at higher concentrations, most observations proved toxicant-unspecific. With decreasing concentrations, however, observations declined in number, but gained in specificity. Specific observations may at best be made at test concentrations ≤ EC10. The existence of a “fingerprint” based on morphol. observations in the FET is, therefore, highly unlikely in the range of acute toxicity, but cannot be excluded for experiments at sublethal concentrations

Environmental Science and Pollution Research 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 C8H10S, Synthetic Route of 637-07-0.

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

Lee, Hui-Soon published the artcileEffect of substituents on benzenesulfonyl motif of 4-phenyl-1-arylsulfonylimidazolidinones for their cytotoxicity, Product Details of C10H11ClO2S, the publication is Archives of Pharmacal Research (2000), 23(6), 579-584, database is CAplus and MEDLINE.

To explore the effect of substituents on Ph motif on sulfonyl function of novel anticancer 4-phenyl-1-benzenesulfonylimidazolidinones, electron donating or withdrawing substituents were introduced at 3 or 4-position and the analogs were tested against human lung (A549) and colon (HCT-15) cancer cell lines. Quant. structure activity relation of the 4-substituted series shows that only STERIMOL L values are well correlated. The increment of substituent’s volume enhances the activity against both cell lines. The small substituent at 3-position addnl. increases the activity. However naphthyl group in place of Ph reduces the activity. Therefore the Ph motif with sterically large substituent at 4-position and small substituent at 3-position may be important for their activity. Integration of these substituents’ effects into the structural design led to discover the more potent analog, 4-phenyl-1-(N-acetylindoline-5-sulfonyl)imidazolidinone.

Archives of Pharmacal Research published new progress about 61551-49-3. 61551-49-3 belongs to chlorides-buliding-blocks, auxiliary class Liquid Crystal &OLED Materials, name is 5,6,7,8-Tetrahydronaphthalene-2-sulfonyl chloride, and the molecular formula is C10H11ClO2S, Product Details of C10H11ClO2S.

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

Florvall, Lennart published the artcilePotential neuroleptic agents. 2,6-Dialkoxybenzamide derivatives with potent dopamine receptor blocking activities, Category: chlorides-buliding-blocks, the publication is Journal of Medicinal Chemistry (1982), 25(11), 1280-6, database is CAplus and MEDLINE.

Nineteen novel N-(2-pyrrolidinylmethyl)benzamides I (R = OMe, OEt, OCHMe₂, or Cl; R¹ and R² = H, Br, or Cl; R³ and R⁴ = H or Et) were synthesized and tested for dopamine receptor blockade in vivo by their ability to block the apomorphine syndrome in the rat. Several compounds were more potent than sulpiride as dopamine receptor blockers and displayed low liability to induce extrapyramidal side effects (catalepsy) in the rat. The blockade of dopamine receptor activity in vivo was mainly confined to the levorotatory isomers having the S absolute configuration. Structure-activity relationships are discussed.

Journal of Medicinal Chemistry published new progress about 36335-47-4. 36335-47-4 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Carboxylic acid,Benzene,Ether, name is 3-Chloro-2,6-dimethoxybenzoic acid, and the molecular formula is C9H9ClO4, Category: chlorides-buliding-blocks.

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