Month: December 2022

Escribano, Alejandra published the artcileWhy Are Dithienylethene-Linked Biscobaltocenes so Hard to Photoswitch?, Computed Properties of 219537-97-0, the publication is ChemPhysChem (2017), 18(6), 596-609, database is CAplus and MEDLINE.

Attaching an organometallic unit to a dithienylethene (DTE) mol. switch can allow one to vary its switching and spectroscopic properties, and to create switchable magnetic properties. In this work, two different dithienylethene mol. switches are used as a bridge between two cobalt sandwich units. The only difference between the switching cores is in the size of the cycloalkene ring connecting both thiophene rings. The complexes present different oxidation states for the cobalt atoms, which are demonstrated to determine the switching reaction. The UV/Vis measurements show that while the Co(I) complexes undergo the switching reaction, the Co(II,III) complexes switch poorly. Kohn-Sham d. functional theory calculations indicate diabatic ring-closure mechanisms and a large number of excited states hindering the cyclization reaction and favoring the relaxation to the open form of the mol. switch.

ChemPhysChem 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

Anderson, Thomas F. published the artcileBis(2-thienyl)silanes: new, versatile precursors to arylsilanediols, Recommanded Product: Dichloro(methyl)(octyl)silane, the publication is Tetrahedron Letters (2006), 47(20), 3353-3355, database is CAplus.

Silanediols are effective bioisosteres for the hydrated carbonyl group. Current methods for the formation of silanediols place a number of constraints on how and where this functionality may be used. A range of arylsilanes that would allow both the formation of arylsilanediols and that are also compatible with multi-step synthetic routes, were studied as possible precursors to silanediols. Through this study bis(2-furyl)silanes and, in particular, bis(2-thienyl)silanes were identified as practical precursors to arylsilanediols.

Tetrahedron Letters 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, Recommanded Product: Dichloro(methyl)(octyl)silane.

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

Mineno, T. published the artcileSolution-phase parallel synthesis of an isoflavone library for the discovery of novel antigiardial agents, Synthetic Route of 33697-81-3, the publication is Combinatorial Chemistry and High Throughput Screening (2002), 5(6), 481-487, database is CAplus and MEDLINE.

Combinatorial chem. has become a dramatically useful tool for the development of new medicinal agents. In the search to discover a novel and effective lead for the treatment of giardiasis, solution-phase synthesis of a library of isoflavone derivatives, e.g. I and II, has been accomplished by reacting the corresponding resorcinols with Ph acetic acid derivatives Of the products screened, several compounds such as I and II exhibited potent antigiardial activity. The details of synthesis, in vitro antigiardial assay, and preliminary structure-activity relationships of these compounds are described.

Combinatorial Chemistry and High Throughput Screening 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 C8H7ClO3, Synthetic Route of 33697-81-3.

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

Shea, Kenneth J. published the artcileSynthesis of Polymethylene Block Copolymers by the Polyhomologation of Organoboranes., Category: chlorides-buliding-blocks, the publication is Macromolecules (1999), 32(9), 3157-3158, database is CAplus.

AB and ABA block copolymers of poly(ethylene glycol-b-methylene) and poly(dimethylsiloxane-b-methylene) were prepared by hydroboration polyhomologation protocol. Control over the chain length of the polymethylene block was achieved by adjusting the initial molar ratio of ylide to organoborane. ABA block copolymers of polymethylene-polydimethylsiloxane-polymethylene were synthesized by a similar approach using thexyl borane as the difunctional hydroboration agent.

Macromolecules published new progress about 5034-06-0. 5034-06-0 belongs to chlorides-buliding-blocks, auxiliary class Salt,Aliphatic hydrocarbon chain, name is trimethyloxosulphonium chloride, and the molecular formula is C13H11NO, Category: chlorides-buliding-blocks.

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

Shea, Kenneth J. published the artcileSynthesis of Polymethylene Block Copolymers by the Polyhomologation of Organoboranes., Name: trimethyloxosulphonium chloride, the publication is Polymer Preprints (American Chemical Society, Division of Polymer Chemistry) (1999), 40(2), 1076-1077, database is CAplus.

AB and ABA block copolymers of poly(ethylene glycol-b-methylene) and poly(dimethylsiloxane-b-methylene) were prepared by hydroboration polyhomologation protocol. Control over the chain length of the polymethylene block was achieved by adjusting the initial molar ratio of ylide to organoborane. ABA block copolymers of polymethylene-polydimethylsiloxane-polymethylene were synthesized by a similar approach using thexyl borane as the difunctional hydroboration agent.

Polymer Preprints (American Chemical Society, Division of Polymer Chemistry) published new progress about 5034-06-0. 5034-06-0 belongs to chlorides-buliding-blocks, auxiliary class Salt,Aliphatic hydrocarbon chain, name is trimethyloxosulphonium chloride, and the molecular formula is C11H12O4, Name: trimethyloxosulphonium chloride.

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

Mishra, Anu published the artcileVisible light triggered, catalyst free approach for the synthesis of thiazoles and imidazo[2,1-b]thiazoles in EtOH : H₂O green medium, Related Products of chlorides-buliding-blocks, the publication is RSC Advances (2016), 6(54), 49164-49172, database is CAplus.

The development of a visible light promoted, mild and greener approach for the synthesis of highly functionalized thiazoles and imidazo[2,1-b]thiazoles under photochem. activation in EtOH : H₂O green medium was demonstrated. The characteristic feature of the present protocol was the utilization of visible light (an omnipresent, nontoxic, environmentally benign and inexpensive reagent) to form C-S and C-N bonds and circumvent the use of catalysts or photosensitizers. The reported protocol was the first example of visible light promoted synthesis of thiazoles and imidazo[2,1-b]thiazoles with various attractive features like being catalyst free, eco-efficient and possessing cost effectiveness, short reaction time, excellent yields and sustainability to fulfill the parameters of green chem.

RSC Advances published new progress about 3696-23-9. 3696-23-9 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Thiourea,Amine,Benzene,Amide, name is 1-(4-Chlorophenyl)thiourea, and the molecular formula is C7H7ClN2S, Related Products of chlorides-buliding-blocks.

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

Khare, R. K. published the artcileSynthesis and fungicidal activity of some 5-methylene-2-[5′-aryl-1′,3′,4′-oxa(thia)diazol-2′-yl]amino-4-thiazolones, Computed Properties of 18791-02-1, the publication is Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry (1995), 34B(9), 828-31, database is CAplus.

N¹-(5-aryl-1,3,4-oxa(thia)diazol-2-yl)thioureas undergo regioselective cyclocondensation with 2,3-dibromopropionyl chloride to give 5-methylene-2-[5′-aryl-1′,3′,4′-oxa(thia)diazol-2′-yl]amino-4-thiazolones. These thiazolones have been tested in vitro for their antifungal activity against Aspergillus niger and Fusarium oxysporium and results compared with their parent thioureas. Attempts have also been made to correlate structural features of tested compounds with their activity.

Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal 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 C3H3Br2ClO, Computed Properties of 18791-02-1.

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

Parvathy, Kattera S. published the artcileUltrasound-assisted reaction of 2,3,4,6-tetra-O-acetyl-α-D-glucopyranosyl bromide with potassium salt of curcumin under PTC conditions, Application In Synthesis of 23616-79-7, the publication is Ultrasonics Sonochemistry (2008), 15(4), 571-577, database is CAplus and MEDLINE.

Reaction of 2,3,4,6-tetra-O-acetyl-α-D-glucopyranosyl bromide with potassium salt of curcumin [bis-1,7-(3′-methoxy-4′-hydroxy)phenyl-5-hydroxy-1,4,6-heptatrien-3-one] under either thermal or high pressure conditions affect the labile substrate, curcumin, thus resulting in drastic reduction in the yields of the glucosides. This drawback could be effectively overcome by carrying out the biphasic reaction in the presence of a phase transfer catalyst under the effect of ultrasound. The reaction under the sonochem. conditions was faster and resulted in the increased yield of the glucoside products. The reaction was investigated in detail with a view to optimizing the yield of the glucosides. The detailed study clearly indicated the important role of the nature and quantity of the phase transfer catalyst employed in the reaction. Also, the selectivity with respect to the formation of mono- or di-β-glucosides under both mono- and biphasic reaction conditions was clearly discernable. The study establishes a simple synthetic protocol for the glucoside derivatives of curcumin in high yields and selectivity using ultrasonic waves.

Ultrasonics Sonochemistry 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, Application In Synthesis of 23616-79-7.

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

Kavitha, Kotthireddy published the artcileAn unusual synthesis of 3-(2-(arylamino)thiazol-4-yl)-2H-chromen-2-ones from ethyl 2-(chloromethyl)-2-hydroxy-2H-chromene-3-carboxylate via benzopyran ring opening, HPLC of Formula: 3696-23-9, the publication is Molecular Diversity (2019), 23(2), 443-452, database is CAplus and MEDLINE.

An unusual and unexpected synthesis of 3-(2-(arylamino)thiazol-4-yl)-2H-chromen-2-ones was observed by the reaction of Et 2-(chloromethyl)-2-hydroxy-2H-chromene-3-carboxylate with various arylthioureas in ethanol under mild reaction conditions with excellent yields. The ambiguity in the structure of the obtained products was solved by recording its single-crystal X-ray anal. This protocol was found to be a novel approach for the preparation of title compounds via benzopyran ring opening. A systematic plausible mechanism was proposed for the formation of the product. Also, an efficient one-pot three-component method was demonstrated for the formation of title compounds starting from salicylaldehyde.

Molecular Diversity published new progress about 3696-23-9. 3696-23-9 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Thiourea,Amine,Benzene,Amide, name is 1-(4-Chlorophenyl)thiourea, and the molecular formula is C7H7ClN2S, HPLC of Formula: 3696-23-9.

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

Kavitha, K. published the artcileAn expedient one-pot tandem method for the synthesis of 3-(2-(phenylamino)thiazol-4-yl)-2H-chromen-2-ones under green conditions, Name: 1-(4-Chlorophenyl)thiourea, the publication is Journal of the Iranian Chemical Society (2019), 16(9), 1913-1921, database is CAplus.

This paper describes a facile pathway for the one-pot three-component synthesis of 3-(2-(phenylamino)thiazol-4-yl)-2H-chromen-2-ones starting from ethyl-4-chloroacetoacetate by treating it with equimolar amounts of various phenylthioureas and salicylaldehyde. Use of biosynthetically prepared L-proline as an efficient catalyst and naturally extracted renewable polyethylene glycol-600 (PEG-600) as an effective green reaction media are the added advantages of this method. Alternatively, tandem, stepwise methods have been proposed to isolate the intermediate and to study the possible reaction mechanism. These reactions are very simple, rapid, cost effective, industrially viable, which would be applied for various biomass conversions.

Journal of the Iranian Chemical Society published new progress about 3696-23-9. 3696-23-9 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Thiourea,Amine,Benzene,Amide, name is 1-(4-Chlorophenyl)thiourea, and the molecular formula is C7H7ClN2S, Name: 1-(4-Chlorophenyl)thiourea.

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