Category: chlorides-buliding-blocks

Zhao, Yu published the artcileThe Copper-Catalyzed Reaction of 2-(1-Hydroxyprop-2-yn-1-yl)phenols with Sulfonyl Azides Leading to C3-Unsubstituted N-Sulfonyl-2-iminocoumarins, Application In Synthesis of 21286-54-4, the publication is Journal of Organic Chemistry (2021), 86(13), 9155-9162, database is CAplus and MEDLINE.

An operationally simple synthesis of Z-configured and C3-unsubstituted N-sulfonyl-2-iminocoumarins I [R¹ = H, 6-Br, 6-Cl, 6-Me; R² = H, Me; R³ = Me, Ph, 4-ClC₆H₄, etc.] was achieved by reacting 2-(1-hydroxyprop-2-yn-1-yl)phenols with sulfonyl azides. The cascade process involved likely starts with a copper-catalyzed alkyne-azide cycloaddition (CuAAC) reaction. This was followed by ring-opening of the resulting metalated triazole (with accompanying loss of nitrogen), reaction of the ensuing ketenimine with the pendant phenolic hydroxyl group and finally dehydration of the (Z)-N-(4-hydroxychroman-2-ylidene)sulfonamide so formed.

Journal of Organic Chemistry 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 C3H5BN2O2, Application In Synthesis of 21286-54-4.

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

Huang, Shi-sheng published the artcileDesign, synthesis, and insecticidal and fungicidal activities of quaternary ammonium salt derivatives of a triazolyphenyl isoxazoline insecticide, Category: chlorides-buliding-blocks, the publication is Pest Management Science (2022), 78(5), 2011-2021, database is CAplus and MEDLINE.

Insect pests seriously decrease the yield and quality of agricultural crops. Resistance to commonly used insecticides is increasingly undermining their effectiveness, and therefore the development of agents with novel modes of action is desirable. Isoxazolines are a new class of insecticides that act on γ-aminobutyric acid (GABA) gated chloride channels. In this work, we used the highly active 4-triazolyphenyl isoxazoline DP-9 as a parent structure to design and synthesize a series of quaternary ammonium salt (QAS) derivatives, and we systematically evaluated their insecticidal and antifungal activities. RESULTS : Many of the synthesized QASs exhibit insecticidal activities equivalent to or higher than that of DP-9. In particular, compounds I-31 (93%, 0.00005 mg/L) and I-34 (80%, 0.00001 mg/L) showed insecticidal activities against diamondback moth larvae that were 2-10 times higher than those of fluralaner (70%, 0.0001 mg/L) and DP-9 (80%, 0.0001 mg/L), in addition to showing excellent activities against oriental armyworm, fall armyworm, cotton bollworm, corn borer, and mosquito larvae. Furthermore, all of the synthesized compounds also showed broad-spectrum fungicidal activities. The insecticidal activities of QAS derivatives of DP-9 were the same as or better than the activity of DP-9. Compounds I-31 and I-34 showed better insecticidal activities against diamondback moth larvae than fluralaner and DP-9, and thus are promising new candidates for insecticide research.

Pest Management Science 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 C9H5Cl2F3, Category: chlorides-buliding-blocks.

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

Zeng, Hao published the artcileThree component hydroxyletherification and hydroxylazidation of (trifluoromethyl)alkenes: access to α-trifluoromethyl β-heteroatom substituted tertiary alcohols, SDS of cas: 864725-22-4, the publication is Chemical Communications (Cambridge, United Kingdom) (2020), 56(46), 6241-6244, database is CAplus and MEDLINE.

The three component hydroxyletherification and hydroxylazidation reactions of (trifluoromethyl)alkenes RC(=CH₂)CF₃ (R = Ph, 2H-1,3-benzodioxol-5-yl, naphthalen-2-yl, etc.) are reported, providing various useful α-trifluoromethyl β-heteroatom substituted tertiary alcs. e.g., I in high yields. The ipso-defluorooxylation of (trifluoromethyl)alkenes with oximes e.g., 2-phenyl-3,3,3-trifluoropropene is completely inhibited. A pesticidal active compound could be synthesized with this method.

Chemical Communications (Cambridge, United Kingdom) 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 C6H3ClFNO2, SDS of cas: 864725-22-4.

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

Yang, Tonghao published the artcileCopper-catalyzed radical reactions of 2-azido-N-arylacrylamides with 1-(trifluoromethyl)-1,2-benziodoxole and 1-azidyl-1,2-benziodoxole, Related Products of chlorides-buliding-blocks, the publication is Organic & Biomolecular Chemistry (2016), 14(13), 3376-3384, database is CAplus and MEDLINE.

The reactions of 2-azido-N-arylacrylamides with trifluoromethyl radicals and azidyl radicals were investigated by using Togni’s reagent and Zhdankin’s reagent as the source of these radicals. Under the catalysis of CuI, Togni’s reagent was firstly converted into the trifluoromethyl radical, which then reacted with 2-azido-N-arylacrylamides to afford the corresponding α-(arylaminocarbonyl)iminyl radicals. The cyclization of the iminyl radicals delivered quinoxalin-2(1H)-one products in moderate yields. A similar reaction took place between 2-azido-N-arylacrylamides and the azidyl radical. In the latter cases, the reaction produced 3-azidomethyl and 3-cyano-substituted quinoxalin-2(1H)-ones. This study not only helps to elucidate the factors influencing the cyclization of α-(arylaminocarbonyl)iminyl radicals, but also provided a new approach towards quinoxalin-2-ones.

Organic & Biomolecular Chemistry published new progress about 18791-02-1. 18791-02-1 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is 2,3-Dibromopropionylchloride, and the molecular formula is C26H26N4O7, Related Products of chlorides-buliding-blocks.

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

Yuan, Yucheng published the artcileReversible photo-switching of dual-color fluorescent Mn-doped CdS-ZnS quantum dots modulated by diarylethene molecules, Quality Control of 219537-97-0, the publication is Frontiers in Chemistry (Lausanne, Switzerland) (2019), 145pp., database is CAplus and MEDLINE.

A highly reversible dynamic hybrid system was established by mixing dual-color emitting Mn-doped CdS-ZnS quantum dots (QDs) with photo-switchable diarylethene mols. The diarylethene 1,2-bis(5-(3,5-bis(trifluoromethyl)phenyl)-2-methylthiophen-3-yl)cyclopent-1-ene I performed fabulous photo-switching property and high fatigue resistance in this hybrid system. The emission color switching between blue and pink of the system can be induced mainly by selective quenching/recovering of the Mn- photoluminescence (PL) of the QDs due to the switchable absorbance of the mol. I. Mechanistic studies showed that quenching of QD emission following UV illumination was caused by both Forster resonance energy transfer (FRET) and reabsorption by surrounding II mols. in the case of the Mn-PL and solely by reabsorption in the case of badngap-(BG-)PL. This photo-switchable system could be potentially used in applications ranging from self-erasing paper to super-resolution fluorescence imaging.

Frontiers in Chemistry (Lausanne, Switzerland) 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 C8H4ClF3O, Quality Control of 219537-97-0.

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

Cai, Xunzhi published the artcilePhotochromic dithienylethene-branched triptycene hybrids, Recommanded Product: 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, the publication is Dyes and Pigments (2015), 227-234, database is CAplus.

Dithienylethene and triptycene both have controllable structure and versatile performances. In this study, a series of triptycene hybrids decorated with different number of dithienylethene units have been developed for photochromic switch. The synthetic process is facile and efficient and all new compounds were clearly characterized by ¹H NMR, ¹³C NMR and HRMS. Their photochromism and spectroscopic properties have been investigated in dichloromethane and THF. The result revealed that the multi-dithienylethene units grafted to triptycene behaved independently and showed distinctive solvent-dependent photochromism in chloride solvents, which probably due to the introduction of controlled spatial arrangement of triptycene core. These distinctive characteristics might be potential used for high-d. multicomponent switches and detection of chloride solvents.

Dyes and Pigments 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, Recommanded Product: 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene.

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

Yang, Peng-Fei published the artcileRegio- and Enantioselective Hydroalkylations of Unactivated Olefins Enabled by Nickel Catalysis: Reaction Development and Mechanistic Insights, Name: 1-(Chloromethyl)-4-(trifluoromethyl)benzene, the publication is ACS Catalysis (2022), 12(10), 5795-5805, database is CAplus.

Direct construction of fully alkyl-substituted tertiary chiral centers remote to activating groups is highly challenging and desirable. Herein, a Ni-catalyzed enantioselective hydroalkylation of unactivated alkenes with unactivated alkyl halides at room temperature is reported, providing a general and practical access to fully alkyl-substituted tertiary stereogenic carbon centers not adjacent to activating groups. This reaction undergoes regio- and stereoselective hydrometalation of unactivated alkenes with a nontrivial Markovnikov selectivity, followed by cross-coupling with unactivated alkyl electrophiles to access trialkyl tertiary saturated stereogenic centers not adjacent to activating groups. The mild and robust conditions enable the use of terminal and internal unactivated alkenes and unactivated primary and secondary alkyl, benzyl and propargyl halides to construct diverse trialkyl tertiary stereogenic carbon centers with broad functional group tolerance. Moreover, exptl. investigations support the reaction undergoing irreversible and stereoselective hydrometalation of alkenes. D. functional theory calculations provide further insights into the reaction mechanism, suggesting a stereoselective migration insertion of alkenes with Ni(II)-H species. Finally, the origin of the regio- and enantioselectivities was also investigated.

ACS Catalysis published new progress about 939-99-1. 939-99-1 belongs to chlorides-buliding-blocks, auxiliary class Fluoride,Chloride,Benzyl chloride,Benzene, name is 1-(Chloromethyl)-4-(trifluoromethyl)benzene, and the molecular formula is C6H13NO2, Name: 1-(Chloromethyl)-4-(trifluoromethyl)benzene.

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

Kwasny, Michael T. published the artcileThermodynamics of counterion release is critical for anion exchange membrane conductivity, HPLC of Formula: 23616-79-7, the publication is Journal of the American Chemical Society (2018), 140(25), 7961-7969, database is CAplus and MEDLINE.

As the field of anion exchange membranes (AEMs) employs an increasing variety of cations, a critical understanding of cation properties must be obtained, especially as they relate to membrane ion conductivity Here, to elucidate such properties, metal cation-based AEMs, featuring bis(norbornene) nickel, ruthenium, or cobalt complexes, were synthesized and characterized. In addition, isothermal titration calorimetry (ITC) was used to probe counterion exchange thermodn. in order to understand previously reported differences in conductivity The ion conductivity data reported here further demonstrated that nickel-complex cations had higher conductivity as compared to their ruthenium and cobalt counterparts. Surprisingly, bulk hydration number, ion concentration, ion exchange capacity, and activation energy were not sufficient to explain differences in conductivity, so the thermodn. of metal cation-counterion association were explored using ITC. Specifically, for the nickel cation as compared to the other two metal-based cations, a larger thermodn. driving force for chloride counterion release was observed, shown through a smaller ΔH_tot for counterion exchange, which indicated weaker cation-counterion association The use of ITC to study cation-counterion association was further exemplified by characterizing more traditional AEM cations, such as quaternary ammoniums and an imidazolium cation, which demonstrated small variances in their enthalpic response, but an overall ΔH_tot similar to that of the nickel-based cation. The cation hydration, rather than its hydration shell or the bulk hydration of the membrane, likely played the key role in determining the strength of the initial cation-counterion pair. This report identifies for the first time how ITC can be used to exptl. determine thermodn. quantities that are key parameters for understanding and predicting conductivity in AEMs.

Journal of the American Chemical Society published new progress about 23616-79-7. 23616-79-7 belongs to chlorides-buliding-blocks, auxiliary class Phase Transfer Catalyst, name is N-Benzyl-N,N-dibutylbutan-1-aminium chloride, and the molecular formula is C19H34ClN, HPLC of Formula: 23616-79-7.

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

Qu, Shuhao published the artcileDesign, synthesis and insecticidal activity of 3-arylisoxazoline-N-alkylpyrazole-5-carboxamide derivatives against Tetranychus urticae koch, Category: chlorides-buliding-blocks, the publication is Heterocycles (2022), 104(3), 512-523, database is CAplus.

Starting from Et 5,5-dimethoxy-2,4-dioxopentanoate 2,3-arylisoxazoline-N-alkylpyrazole-5-carboxamide derivatives I (R = HNCH₂C(O)NHCH₂CF₃, 4-t-BuC₆H₄CH₂NH, 4-EtOC₆H₄CH₂NH, 4-MeC₆H₄OC₆H₄CH₂NH) were designed and synthesized with the key steps of 1,3-dipolar cycloaddition and EDCl coupling. Their insecticidal activity against Tetranychus urticae Koch was further evaluated and the results indicated that, compared with Fluralaner, all compounds showed moderate and less activity at 500 mg/L and 250 mg/L, resp. This study complements the structure-activity relationship of N-alkylpyrazole-5-carboxamides to Fluralaner, giving further guidance in Fluralaner-based pesticide drug design and discovery.

Heterocycles 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 C9H5Cl2F3, Category: chlorides-buliding-blocks.

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

Zhang, Zhenzhen published the artcileCopper-Catalyzed Carbotrifluoromethylation of Unactivated Alkenes Driven by Trifluoromethylation of Alkyl Radicals, Formula: C5H10Cl3O3P, the publication is Chinese Journal of Chemistry (2019), 37(5), 452-456, database is CAplus.

Herein an unprecedented protocol for radical carbotrifluoromethylation of unactivated alkenes is reported. With Cu(OTf)₂ as the catalyst, the reaction of unactivated alkenes, TMSCF₃ and activated alkyl chlorides at room temperature provides the corresponding carbotrifluoromethylation products in satisfactory yields. Directed by trifluoromethylation of alkyl radicals, the method exhibits an excellent regioselectivity that is opposite to those driven by CF₃ radical addition

Chinese Journal of Chemistry 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 C6H8O6, Formula: C5H10Cl3O3P.

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