Category: 118-45-6

Im, Jeong Kyun; Jeong, Ilju; Yang, ByeongDo; Moon, Hyeon; Choi, Jun-Ho; Chung, Won-jin published the artcile< N-Chlorinative Ring Contraction of 1,4-Dimethoxyphthalazines via a Bicyclization/Ring-Opening Mechanism>, Application of C8H3ClO3, the main research area is dimethoxyphthalazine trichloroisocyanuricacid ring contraction bicyclization; phthalimide preparation.

An unprecedented N-chlorinative ring contraction of 1,2-diazines was discovered and investigated with an electrophilic chlorinating reagent, trichloroisocyanuric acid (TCICA). Through optimization and mechanistic anal., the assisting role of n-Bu4NCl as an exogenous nucleophile was identified and the optimized reaction conditions were applied to a range of 1,4-dimethoxyphthalazine derivatives Also, an improvement of overall efficiency was demonstrated by the use of a labile O-silyl group. A bicyclization/ring-opening mechanism inspired by the Favorskii rearrangement was proposed and supported by the DFT calculations Furthermore, the efforts on scope expansion as well as the evaluation of other electrophilic promoters revealed that the newly developed ring contraction reactivity was a unique characteristic of 1,4-dimethoxyphthalazine scaffold and TCICA.

Synthesis published new progress about Chlorination. 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Application of C8H3ClO3.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Williams, F. J.; Donahue, P. E. published the artcile< Reaction of thiophenoxides with nitro- and halo-substituted phthalic anhydrides>, Quality Control of 118-45-6, the main research area is phthalic anhydride nitro halo substitution; substitution nitrophthalic anhydride; thiophenol substitution nitrophthalic anhydride.

A wide variety of thioether-substituted phthalic anhydride derivatives e.g. I (R = H, Me, Cl, OH) and II (R = H, Me, Cl, MeO) were synthesized from the reaction of thiophenoxides with nitro- or halosubstituted phthalic anhydrides. These reactions were carried out at room temperature and gave no indication of attack by the S nucleophile at the carbonyl groups of the anhydride. This is in direct contrast with the room-temperature reactions of phthalic anhydride with phenoxide nucleophiles, in which the nucleophile attacks only the carbonyl groups. The reaction involving the S nucleophile works well using either preformed salts of the thiophenols or by generating the nucleophile in situ with amine or inorganic salts used as bases. The choice of the base system determines the speed of the reaction, which can vary from <5 min to 3 h at 25 C. The halo derivatives are preferred over the nitro derivatives to minimize side reactions. Journal of Organic Chemistry published new progress about Cyclocondensation reaction, intramolecular. 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Quality Control of 118-45-6.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Gao, Changlu; Zhang, Suobo; Gao, Lianxun; Ding, Mengxian published the artcile< Microwave-assisted synthesis of high-molecular-weight poly(ether imide)s by phase-transfer catalysis>, Synthetic Route of 118-45-6, the main research area is polyether polyimide polycondensation phase transfer catalysis polymerization microwave.

A facile and rapid polycondensation reaction of disodium bisphenol A with bis(chlorophthalimide)s was preformed with a domestic microwave oven in o-dichlorobenzene by phase-transfer catalysis. The polymerization reactions, in comparison with conventional heating polycondensation, proceeded rapidly and were completed within 25 min. The polymerizations gave the corresponding poly(ether imide)s with inherent viscosities of 0.55-0.92 dL g-1. The effects of various factors on the polymerization, such as the amount of the catalyst, the reaction time, and the microwave power were studied. The properties of the polymers were briefly characterized.

Journal of Applied Polymer Science published new progress about Glass transition temperature. 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Synthetic Route of 118-45-6.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Liu, Jiangtao; Chen, Guofei; Fang, Xingzhong published the artcile< Preparation, characterization, and properties of poly(thioether ether imide)s from isomeric bis(chlorophthalimide)s and bis(4-mercaptophenyl) ether>, Application of C8H3ClO3, the main research area is chlorophthalimide mercaptophenyl ether viscosity solubility thermal stability mech property.

A series of isomeric poly(thioether ether imide)s (PTEIs) containing both thioether and ether linkages were prepared by aromatic nucleophilic substitution reaction of isomeric bis(chlorophthalimide)s (BCPIs) with bis(4-mercaptophenyl) ether (BMPE). The inherent viscosities of synthesized polymers were found in the range of 0.41-0.86 dL g-1 in N-methyl-2-pyrrolidone at 30°C. The glass transition temperature (Tg) of the isomeric PTEIs were 210-242°C and increased by increasing the content of 3-substituted phthalimide unit in the polymer backbone. The 5% weight loss temperature values reached up to 525-539°C under nitrogen and 523-534°C in air atmospheres, resp., which indicated this kind of polyimide possessed excellent thermal stability. Flexible films could be cast from the polymer solution The PTEI films exhibited moderate mech. properties with tensile strengths of 106-127 MPa, elongations at break of 8.6-11.5%, and tensile moduli of 2.2-2.8 GPa, resp. Dynamic mech. thermal anal. results illustrated that the storage moduli (E’) of PTEI (a-e) almost completely maintained at about 2.3 GPa before reaching the corresponding Tg. It is noted that the min. melt viscosity of isomeric PTEIs (a’-e’) decreased by increasing the content of unsym. 3,4′-substituted phthalimide unit in the polymer main chain.

High Performance Polymers published new progress about Elongation at break. 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Application of C8H3ClO3.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Wang, Yiping; Chen, Miao; Huang, Qunwu; Cui, Yong; Jin, Yanchao; Cui, Lingyun; Wen, Chen published the artcile< Experimental study of a solar-driven photo-electrochemical hybrid system for the decolorization of Acid Red 26>, Reference of 118-45-6, the main research area is Acid Red 26 dye decolorization photoelectrochem hybrid system.

This study presents a new solar-driven hybrid system that integrated a photo-electrochem. reactor with a photovoltaics (PV) panel for azo dyes decolorization and electricity generation. Full spectrum of sunlight is utilized to optimize the color removal of Acid Red 26 (AR26) in this hybrid system. Persulfate (PS, S2O2-4) was selected as the photochem. oxidant and Ti/IrO2-Ta2O5 electrode was used as the anode. Experiments were made to evaluate the efficiency of decolorization and the performance of PV panels in different reaction conditions outdoors. The results showed that the synergistic effect of two processes was observed for the AR26 decolorization. Comparing with the solar/persulfate process or the electrochem. process alone, the complete color removal time by the hybrid system decreased up to 50% and 44.4% resp. In this system, the water layer in the flow channel cooled PV panels by absorbing the far IR spectrum of sunlight, and the increased temperature of wastewater from 7°C to 16°C enhanced the decolorization efficiency of AR26. Moreover, the generated electricity by PV panels could satisfy the energy demand of electrochem. oxidation

Energy Conversion and Management published new progress about Chlorides Role: NUU (Other Use, Unclassified), USES (Uses). 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Reference of 118-45-6.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Caswell, Lyman R.; Soo, Lily Y.; Lee, Daisy H.; Fowler, Rosemary G.; Campbell, Jo Anne B. published the artcile< Dipole moments of some 3- and 4- substituted phthalimides and phthalic anhydrides. Influence of steric and resonance effects>, Quality Control of 118-45-6, the main research area is dipole moment phthalimide phthalic anhydride.

The dipole moments of phthalimide, phthalic anhydride, and 16 derivative compounds in dioxane solution were measured and compared. The predicted moments of the derivatives were also calculated from group moments. There is good agreement between the exptl. and predicted dipole moments only for 3-methylphthalic anhydride, 3-fluorophthalimide, 4-methylphthalimide, 3-fluorophthalic anhydride, and 4-methylphthalic anhydride. The Zhdanov-Minkin equation for calculating resonance interaction moments was applied for all of the derivatives Arguments are presented for designating the numerical results of this calculation as ring polarization moments. The results of these calculations show that interaction resonance is significant only for 4-chlorophthalic anhydride. Steric and resonance effects are both small or absent as influences on the dipole moments of 3-fluorophthalic anhydride, 3-fluorophthalimide, and of all methyl derivatives Steric interaction between ortho substituents appears to be large only in the cases of 3-nitrophthalimide and 3-nitrophthalic anhydride.

Journal of Organic Chemistry published new progress about Dipole moment. 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Quality Control of 118-45-6.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Nandhikonda, Premchendar; Heagy, Michael D. published the artcile< Dual Fluorescent N-Aryl-2,3- naphthalimides: Applications in Ratiometric DNA Detection and White Organic Light-Emitting Devices>, Related Products of 118-45-6, the main research area is ratiometric DNA detection dual fluorescent aryl naphthalimide; white organic light emitting device dual fluorescent aryl naphthalimide.

A ten element matrix of 5- and 6-substituted-(2,3)-naphthalimides was prepared for the appropriate placement of substituents necessary to promote dual fluorescence (DF). As prescribed by our balanced seesaw photophys. model this matrix yielded nine new DF dyes out of a possible ten compounds From this set of nine DF dyes, 4-fluoronaphthalic amide was selected as a probe for ratiometric detection of DNA and demonstration of panchromatic emission.

Organic Letters published new progress about Dyes. 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Related Products of 118-45-6.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics