Chlorides-buliding-blocks

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

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

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

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

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

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

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

Zhang, Xiao-Long published the artcileQSTR studies on acute toxicity and mutagenicity of halogenated benzenes, Computed Properties of 350-30-1, the publication is Asian Journal of Chemistry (2014), 26(9), 2707-2710, database is CAplus.

In this paper, a quant. structure toxicity relationship study was performed for the prediction of the acute toxicity and mutagenicity of halogenated benzenes. The mol. descriptors of halogenated benzenes have been calculated with semi-empirical AM1 and E-dragon methods and both quant. structure toxicity relationship models for mice via the oral LD₅₀ model and the S. typhimurium (TA98 + S9) mutagenic model of halogenated benzenes were developed using multiple linear regression (MLR) anal. The validation results obtained from the test set indicate that the proposed models are robust and satisfactory.

Asian Journal of Chemistry 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 C9H8BNO2, Computed Properties of 350-30-1.

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

Liu, Yang-hua published the artcileDevelopment of QSAR model for predicting mutagenicity of aromatic compounds, Application of 3-Chloro-4-fluoronitrobenzene, the publication is Chinese Journal of Structural Chemistry (2015), 34(3), 324-334, database is CAplus.

Quant. structure-activity relationship (QSAR) model was developed for predicting the mutagenicity of aromatic compounds The log revertants data of S. typhimurium TA98 strain from Ames test have been collected. 225 Aromatic compounds were randomly divided into the training set with 186 mols. and test set with 39 mols. Multiple linear regression (MLR) anal. was used to select six descriptors from thousands of descriptors calculated by semi-empirical AM1 and E-dragon methods. The final QSAR model with six descriptors was internal and external validated. In addition, to validate the utility of our QSAR model for the chem. evaluation, three aromatic compounds were taken to test the predictive ability and reliability of the model exptl. The compounds selected for testing were not based on the predictions, thus spanning the range of predicted probabilities. The subsequently generated results of the Ames test were in good correspondence with the predictions and confirmed this approach as a useful means of predicting likely mutagenic risk of aromatic compounds

Chinese Journal of Structural Chemistry 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 C6H3ClFNO2, Application of 3-Chloro-4-fluoronitrobenzene.

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

Zhou, Yan published the artcileRecyclable palladium-catalyzed cyclocarbonylation between benzyl chlorides and salicylic aldehydes towards coumarins, Quality Control of 939-99-1, the publication is Molecular Catalysis (2022), 112404, database is CAplus.

A novel and practical route to coumarin derivatives was developed via the heterogeneous Pd-catalyzed carbonylative reaction and subsequent intramol. condensation process starting from com. easily available benzyl chlorides and salicylic aldehydes. Reactions were performed in the existence of 2 mol% of an SBA-15-immobilized bidentate phosphine palladium complex [SBA-15-P,P-PdCl2] in dioxane at 110°C with Et₃N as base under 10 bar of CO to afford a wide range of coumarin derivatives mostly with good to high yields. Importantly, this new heterogenized palladium complex was easy to recover via filtration of the reaction mixture, and was recyclable up to 8 times without apparent drop in its catalytic performance.

Molecular 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 C12H17NS2, Quality Control of 939-99-1.

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