Month: December 2022

Li, Laiming published the artcilePreparation and evaluation of a novel and high efficient boronic acid-substituted silica supported Pt catalyst, Formula: C9H20Cl2Si, the publication is Colloids and Surfaces, A: Physicochemical and Engineering Aspects (2019), 322-330, database is CAplus.

A smart design of transition metal nanocatalyst can efficiently improve its catalytic activity and use value. In this work, platinum (Pt) was successfully anchored to silica gel with phenylboronic acid group first time and formed nanoparticles (0.5-5 nm) which afforded a highly active supported catalyst for the hydrosilylation of olefins. The turnover number and regioselectivity in the reaction of methyldichlorosilane and 1-octene using 0.00000004 mol of the immobilized Pt catalyst approached 1,321,317 and 99% over 12 h. The corresponding hydrosilylation products in excellent yields and regioselectivities were obtained when we employed a broad range of terminal aliphatic olefins and methyldichlorosilane as substrates. The fully immobilized Pt nanoparticles could be recycled at least 10 runs without any obvious loss in catalytic activity.

Colloids and Surfaces, A: Physicochemical and Engineering Aspects 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

Li, Futing published the artcilePreparation of efficient and environment-friendly silica-supported EDTA platinum catalyst and its applications in hydrosilylation of olefins and methyldichlorosilane, HPLC of Formula: 14799-94-1, the publication is Journal of Molecular Catalysis A: Chemical (2016), 254-263, database is CAplus.

A novel catalyst by preparing silica supported EDTA (EDTA) platinum complex was developed. The preparation conditions, such as heating temperature and solvent types, were optimized. The catalyst was phosphine-free and sulfur-free which was characterized by IR spectroscopy (IR), energy dispersive X-ray spectrometer (EDS), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), XPS, UV spectroscopy (UV) and at. absorption spectroscopy (AAS). Its catalytic activity was evaluated by catalyzing solventless hydrosilylation reactions. In the hydrosilylation reaction between 1-hexene and methyldichlorosilane, the new catalyst showed a higher catalytic activity than that provided by Speier’s catalyst. Moreover, the new catalyst could be reused for 12 times without obvious loss of catalytic activity. To confirm its practical feasibility, catalyzing the hydrosilylation reaction between 1-octene and methyldichlorosilane was performed. Our results indicated that the new catalyst can efficiently catalyze the hydrosilylation reaction.

Journal of Molecular Catalysis A: Chemical 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, HPLC of Formula: 14799-94-1.

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

Yin, Xue-Song published the artcileCopper(II)-catalyzed methoxylation of unactivated (hetero)aryl C-H bonds using a removable bidentate auxiliary, Related Products of chlorides-buliding-blocks, the publication is Organic Chemistry Frontiers (2015), 2(2), 119-123, database is CAplus.

A copper(II)-catalyzed methoxylation of unactivated (hetero)aryl C-H bonds directed by newly developed PIP directing group with methanol has been achieved. This protocol occurs efficiently with a catalytic amount of copper (5 mol%), is a simple and environmentally benign reaction system, has a broad substrate scope and high functional group tolerance.

Organic Chemistry Frontiers 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 C24H20Ge, Related Products of chlorides-buliding-blocks.

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

Zheng, Zhi-gang published the artcileThree-dimensional control of the helical axis of a chiral nematic liquid crystal by light, Name: 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, the publication is Nature (London, United Kingdom) (2016), 531(7594), 352-356, database is CAplus and MEDLINE.

Chiral nematic liquid crystals – otherwise referred to as cholesteric liquid crystals (CLCs) – are self-organized helical superstructures that find practical application in, for example, thermog., reflective displays, tuneable color filters and mirrorless lasing. Dynamic, remote and three-dimensional control over the helical axis of CLCs is desirable, but challenging. For example, the orientation of the helical axis relative to the substrate can be changed from perpendicular to parallel by applying an alternating-current elec. field, by changing the anchoring conditions of the substrate, or by altering the topog. of the substrate’s surface; sep., in-plane rotation of the helical axis parallel to the substrate can be driven by a direct-current field. Here we report three-dimensional manipulation of the helical axis of a CLC, together with inversion of its handedness, achieved solely with a light stimulus. We use this technique to carry out light-activated, wide-area, reversible two-dimensional beam steering-previously accomplished using complex integrated systems and optical phased arrays. During the three-dimensional manipulation by light, the helical axis undergoes, in sequence, a reversible transition from perpendicular to parallel, followed by in-plane rotation on the substrate surface. Such reversible manipulation depends on exptl. parameters such as cell thickness, surface anchoring condition, and pitch length. Because there is no thermal relaxation, the system can be driven either forwards or backwards from any light-activated intermediate state. We also describe reversible photocontrol between a two-dimensional diffraction state, a one-dimensional diffraction state and a diffraction ‘off’ state in a bilayer cell.

Nature (London, United Kingdom) 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 C39H35N5O8, Name: 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

Fan, Jing published the artcileLight-Directing Omnidirectional Circularly Polarized Reflection from Liquid-Crystal Droplets, Safety of 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, the publication is Angewandte Chemie, International Edition (2015), 54(7), 2160-2164, database is CAplus and MEDLINE.

Constructing and tuning self-organized 3-dimensional (3D) superstructures with tailored functionality is crucial in the nanofabrication of smart mol. devices. A self-organized, phototunable 3D photonic superstructure was fabricated from monodisperse droplets of 1-dimensional cholesteric liquid crystal (CLC) containing a photosensitive chiral mol. switch with high helical twisting power. The droplets are obtained by a glass capillary microfluidic technique by dispersing into PVA solution that facilitates planar anchoring of the liquid-crystal mols. at the droplet surface, as confirmed by the observation of normal incidence selective circular polarized reflection in all directions from the core of individual droplet. Photoirradiation of the droplets furnishes dynamic reflection colors without thermal relaxation, whose wavelength can be tuned reversibly by variation of the irradiation time. The results provided clear evidence on the phototunable reflection in all directions.

Angewandte Chemie, International Edition 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, Safety of 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

Wang, Ke published the artcileSynthesis and in vitro cytotoxic activities of sorafenib derivatives, Quality Control of 33697-81-3, the publication is Chinese Chemical Letters (2014), 25(5), 702-704, database is CAplus.

A series of novel sorafenib derivatives were designed and synthesized. The cytotoxic activities of these compounds were tested in three tumor cell lines. Most of the compounds showed potent antiproliferative activity against the tested cell lines with IC₅₀ = 0-20 μmol/L. Some compounds demonstrated competitive antiproliferative activities to sorafenib against all three cancer cell lines. Among them, one of the compounds demonstrated significant inhibitory activity against A549, ACHN, and MDA-MB-231 cell lines with IC₅₀ values of 1.29, 1.99, 3.11 μmol/L, resp.

Chinese Chemical Letters published new progress about 33697-81-3. 33697-81-3 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Carboxylic acid,Benzene,Phenol, name is 3-Chloro-4-hydroxyphenylacetic acid, and the molecular formula is C21H24O8, Quality Control of 33697-81-3.

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

Li, Ziyong published the artcileMulti-modulated photochromic behavior of a D-A type dithienylethene, Computed Properties of 219537-97-0, the publication is Dyes and Pigments (2019), 712-720, database is CAplus.

The development of multiresponsive photochromic materials is of increasing interest for their potential application in the complicated chem. and biol. environment. Here, a novel D-A type dithienylethene derivative NDM, in which dimethylamino group acted as both electron donor (D) and recognition moiety for H⁺, and the dicyanovinyl group functioned as electron acceptor (A) and responsed to cyanide anion, has been designed and synthesized. Its structure was confirmed by ¹H NMR, ¹³C NMR and HRMS (ESI). As expected, dithienylethene NDM exhibited distinctive multi-modulated photochromic properties by solvent, acid and cyanide anion stimulation. Moreover, NDM can be acted as a potential fluorescent turn-on pH-sensor and colorimetric sensor for CN^– in biol. field.

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, Computed Properties of 219537-97-0.

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

Song, Song published the artcileDMSO-catalysed late-stage chlorination of (hetero)arenes, Recommanded Product: 3-Chloro-2,6-dimethoxybenzoic acid, the publication is Nature Catalysis (2020), 3(2), 107-115, database is CAplus.

A highly efficient aromatic chlorination of arenes such as 1-methyl-indazole, imidazo[1,2-a]pyrazine, phenylthiophene, anthracene, etc. that is catalyzed by DMSO with N-chlorosuccinimide as the chloro source is reported. The mild conditions, easy-availability and stability of the catalyst and reagents, as well as good functional-group tolerance, showed the approach to be a versatile protocol for the late-stage aromatic chlorination of complex natural products, e.g., papaverine, drugs, e.g., diclofenac and peptides, e.g., I. The multi-gram experiment and low-cost of N-chlorosuccinimide and DMSO show great potential for drug discovery and development in industrial applications.

Nature Catalysis 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 C19H14O2, Recommanded Product: 3-Chloro-2,6-dimethoxybenzoic acid.

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

Tan, Wen-Juan published the artcileA photochromic diarylethene dyad based on perylene diimide, 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 (2011), 89(3), 260-265, database is CAplus.

A new photochromic diarylethene dyad based on perylene diimide (PDI-DTE) was synthesized. The photochromic reaction of PDI-DTE induced the significant change of the absorption spectra and fluorescence intensity. The color of PDI-DTE in THF solution was not changed obviously upon UV irradiation, while the fluorescence intensity is increased unexpectedly with the photochromic cyclization of the diarylethene units. With not visible change of color accompanied to the enhanced fluorescence, PDI-DTE can be potentially applied to anti-counterfeiting technol.

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 C8H8BNO2, 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

Li, Teng published the artcilePhotoresponsive Supramolecular Assemblies Based on a C₃-Symmetric Benzene-1,3,5-tricarboxamide Anchored Diarylethene, Recommanded Product: 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, the publication is Advanced Optical Materials (2016), 4(6), 840-847, database is CAplus.

This article describes about photoresponsive supramol. assemblies based on a C₃-sym. benzene-1,3,5-tricarboxamide anchored diarylethene. This article describes about a functional C3-sym. BTA anchored diarylethene (C3-BTE) mol. that evolved into ordered superstructures with tunable morphol. properties both in different solvent and via alternative light stimuli.

Advanced Optical Materials 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