Category: 118-45-6

Li, Wenmu; Chen, Guang; Zhang, Suobo; Wang, He; Yan, Donghang published the artcile< Synthesis and properties of novel regioirregular polyimides from easily synthesized asymmetrical dichlorophthalimide monomers>, Application of C8H3ClO3, the main research area is asym dichlorophthalimide monomer regioirregular polyimide.

New asym. aromatic dichlorophthalimide monomers containing pendant groups (trifluoromethyl or methyl) were conveniently prepared from inexpensive and com. available compounds With these monomers, a new class of soluble polyimides with a regioirregular structure within the polymer backbone was obtained by the Ni(0)-catalyzed polymerization method. The structures of the polymers were confirmed by various spectroscopic techniques. The polyimides displayed better solubility and higher thermal stability than the corresponding regular polyimides. In addition, fluorinated polyimides in this study had low dielec. constants ranging from 2.52 to 2.78, low moisture absorptions of less than 0.59%, and low thermal expansion coefficients between 10.6 and 19.7 ppm/°C. The oxygen permeability coefficients and permeability selectivity of oxygen to nitrogen of the films were in the ranges of 2.99-4.20 barrer and 5.55-7.50, resp. We have demonstrated that the synthetic pathway for polyimides provides a successful approach to increasing the solubility and processability of polyimides without sacrificing their thermal stability.

Journal of Polymer Science, Part A: Polymer Chemistry published new progress about Dielectric constant. 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

Wu, Zhefu; Yan, Guangming; Lu, Jiehong; Zhang, Gang; Yang, Jie published the artcile< Thermal Plastic and Optical Transparent Polyimide Derived from Isophorone Diamine and Sulfhydryl Compounds>, COA of Formula: C8H3ClO3, the main research area is thermoplastic optically transparent polythioether polyimide.

A series of thermoplastic and optical transparent polyimide-bearing aliphatic rings were manufactured through a two-step approach. The solubility and melt processability were significantly enhanced after embedded with flexible thio-ether moieties. The complex viscosity was within 225.6-3980 Pa·s from 330 to 300 °C. The modified polyimide exhibited moderate mech. strength to 76 MPa. The 5% thermal weight loss temperature was around 443 °C, with a glass transition temperature of 204.6-234.8 °C. Although the cyclic aliphatic segments endowed the obtained PIs with improved optical performance, the transmittance could be up to 82% at 450 nm, while the transmittance of industrialized thermoplastic polyimide derived from PMDA and ODA was less than 20% under the same condition.

Industrial & Engineering Chemistry Research published new progress about Elongation at break. 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, COA of Formula: C8H3ClO3.

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

Zhao, Hong-Kun; Ji, Hai-Zhe; Meng, Xian-chao; Li, Rong-Rong published the artcile< Solubility of 3-Chlorophthalic Anhydride and 4-Chlorophthalic Anhydride in Organic Solvents and Solubility of 3-Chlorophthalic Acid and 4-Chlorophthalic Acid in Water from (283.15 to 333.15) K>, Application of C8H3ClO3, the main research area is chlorophthalic acid anhydride isomer water organic solvent solubility.

The solubility of 3-chlorophthalic anhydride and 4-chlorophthalic anhydride in Et acetate, acetone, and 1,4-dioxane and the solubility of 3-chlorophthalic acid and 4-chlorophthalic acid in water were measured using Schreinemaker’s wet residue method at temperatures ranging from (283.15 to 333.15) K at atm. pressure. Results of these measurements were correlated with the modified Apelblat equation.

Journal of Chemical & Engineering Data published new progress about Anhydrides, aryl Role: PEP (Physical, Engineering or Chemical Process), PRP (Properties), PROC (Process). 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

Chen, Honghao; Ouyang, Lufeng; Liu, Jidan; Shi, Wen-Jing; Chen, Guoshu; Zheng, Liyao published the artcile< Synthesis of Multisubstituted 1-Naphthoic Acids via Ru-Catalyzed C-H Activation and Double-Alkyne Annulation under Air>, Recommanded Product: 5-Chloroisobenzofuran-1,3-dione, the main research area is phthalic acid alkyne annulation ruthenium; naphthoic acid preparation; ruthenium annulation catalyst.

An efficient [2 + 2 + 2] benzannulation of phthalic acids/anhydrides with two alkynes was developed for synthesis of multisubstituted 1-naphthoic acids via Ru-catalyzed C-H activation. The reaction preceded well using atm. oxygen as the sole oxidant with high atom/step economies. Facilitated by the free carboxyl group, the products can be easily converted to diverse polycyclic mols.

Journal of Organic Chemistry published new progress about Air. 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Recommanded Product: 5-Chloroisobenzofuran-1,3-dione.

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

Hayashi, Mosuke; Furusawa, Ikuzo published the artcile< Preparation of 4-chlorophthalic acid. II>, Product Details of C8H3ClO3, the main research area is .

4-Aminophthalic acid diazotized and treated with CuCl solution gives 4-chlorophthalic acid, m. 149-9.5° (anhydride, m. 97°).

Kogyo Kagaku Zasshi published new progress about 118-45-6. 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Product Details of C8H3ClO3.

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

Marshall, Philip; Mooney, Brett; Prager, Rolf; Ward, A. David published the artcile< A convenient synthesis of (E)-Δ3,3'-biphthalides>, Related Products of 118-45-6, the main research area is biphthalide; phthalic anhydride condensation triphenylphthalidylphosphonium bromide.

Treating phosphonium salts I (R = R1 = H, MeO; X = halo) with phthalic anhydrides II (R2 = H, Cl, Me, MeO; R3 = H, MeO, NO2; R4 = H, MeO; R3R4 = OCH2O; Z = S O) in CH2Cl2 in the presence of Et3N gave 70-95% biphthalides III.

Synthesis published new progress about 118-45-6. 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

Liu, Min; Huang, Min; Li, Wenzhe; Yan, Yingkun; Li, Min; Zhang, Xiaomei published the artcile< Enantioselective Synthesis of Axially Chiral N-Aryl-3-methyleneisoindolin-1-ones>, Synthetic Route of 118-45-6, the main research area is aryl methyleneisoindolinone preparation enantioselective; aniline acetyl benzoic acid phosphoric catalyst.

A chiral phosphoric acid catalyzed enantioselective condensation of 2-acetylbenzoic acid derivatives 2-R-3-R1-4-R2-5-(C(O)CH3)C6HCOOH (R = H, F, Cl, OH; R1 = H, Cl, Me, etc.; R2 = H, F; R1 = R2 = -CH2-CH-CH-CH2-;) with 2-substituted aniline derivatives, 2-R3-4-R4-C6H3NH2 (R3 = t-Bu, i-Pr, I; R4 = H, Br, Ph, etc.) leading to the construction of a series of novel C-N axially chiral N-aryl-3-methylene-isoindolin-1-ones I in moderate to good yields (up to 97%) with generally moderate enantioselectivities (up to 87% ee) was described. In addition, the absolute configuration of product I (R = Cl; R1 = H; R2 = H; R3 = t-Bu; R4 = H) was determined by an X-ray crystal structural anal. Furthermore, one product I was subjected to oxidative cleavage to generate an axially chiral phthalimide.

Asian Journal of Organic Chemistry published new progress about Anilines Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 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

Jiang, Xiu-Juan; Tang, Hao; Li, Xiao-Yuan; Zang, Shuang-Quan; Hou, Hong-Wei; Mak, Thomas C. W. published the artcile< Two new isomerous fluorescent chemosensors for Al3+ based on photoinduced electron transfer>, Related Products of 118-45-6, the main research area is isomer fluorescent chemosensor aluminum photoinduced electron transfer; Al(3+); Fluorescent chemosensors; Isomerous; PET.

Two new isomerous PET fluorescent chemosensors (L and L’) for Al3+ were designed, synthesized and characterized. The two chemosensors exhibited fluorescence enhancement upon binding Al3+ in CH3CN by PET inhibition processes from both the sulfur and the nitrogen donors to anthracene. The job’s plot, Benesi-Hildebrand plot and 1H NMR titration experiments indicate that both chemosensors form a 1:1 complex with Al3+. The binding constants are (1.432 ± 0.186) × 105 and (1.427 ± 0.970) × 105, resp. Also, the lowest detection limit for Al3+ in CH3CN is 4.8 × 10-7 M and 2.2 × 10-7 M, resp.

Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy published new progress about Crystal structure. 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

Ponomarenko, A. A. published the artcile< Synthesis of monochlorophthalic anhydrides from mononitrophthalic anhydrides>, Product Details of C8H3ClO3, the main research area is .

See C.A. 44, 7810b.

Zhurnal Obshchei Khimii published new progress about 118-45-6. 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Product Details of C8H3ClO3.

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

Xu, Wen-Ke; Guo, Jia-Ming; Chen, Zhao-Dan; Si, Chang-Mei; Wei, Bang-Guo published the artcile< Titanium Tetrachloride-Mediated Approach to Access 2-Chloro-2-Substituted Isoindolin-1-ones through the Addition of Alkynes to Acyliminium ions>, Computed Properties of 118-45-6, the main research area is isoindolinone chlorovinyl hydroxyethyl preparation diastereoselective; oxazoloidoindole ring opening addition chlorination terminal alkyne titanium tetrachloride.

An asym. approach to access 2-substituted isoindolin-1-ones I (R1 = R2 = H, MeO; R1 = Cl, R2 = H; R = n-pentyl, cyclopropyl, Ph, 4-FC6H4, 2-MeC6H4, 2-naphthyl, etc.) through TiCl4-mediated addition-chlorination of N,O-acetals II with terminal alkynes RCCH has been developed. A range of substrates were amenable to this transformation and the desired substituted isoindolin-1-ones were obtained in moderate to good yields with moderate diastereoselectivities.

European Journal of Organic Chemistry published new progress about Addition reaction, stereoselective. 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Computed Properties of 118-45-6.

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