Category: chlorides-buliding-blocks

Munjal, Bhushan; Zode, Sandeep S.; Bansal, Arvind K. published the artcile< Crystallization of Cyclophosphamide Monohydrate During Lyophilization>, Related Products of 6055-19-2, the main research area is crystallization cyclophosphamide monohydrate lyophilization; crystallization; dehydration; freeze-drying; hydrates; lyophilization; processing.

The purpose of this study was to investigate the phase behavior of cyclophosphamide (CPA) during various stages of lyophilization, with special emphasis on obtaining crystalline CPA monohydrate (CPA-MH) in the lyophilized product. Subambient differential scanning calorimetry and low-temperature X-ray diffractometry (LTXRD) were used to study the phase behavior of CPA solution (3.7% w/v). In situ lyophilization in LTXRD chamber was used to monitor the phase transitions occurring during the drying stages. Finally, the implications of these findings were confirmed by freeze-drying the aqueous solution in a laboratory-scale freeze-dryer. The results suggested that CPA remains amorphous during freeze concentration, with a Tg’ of -50°C. However, its crystallization as CPA-MH can be induced by annealing the frozen solution between -5°C and -10°C. In situ lyophilization in LTXRD showed that the CPA-MH crystallized during annealing, rapidly dehydrated during primary drying, thereby causing structural collapse. The dehydration of CPA-MH can be prevented by lowering the escaping tendency of water mols. from the crystal lattice of CPA-MH by maintaining the chamber pressure to 300, 400, or 500 mTorr. This study highlights the relationship of process parameters used during lyophilization with the solid form of lyophilized CPA.

Journal of Pharmaceutical Sciences (Philadelphia, PA, United States) published new progress about Crystallization. 6055-19-2 belongs to class chlorides-buliding-blocks, and the molecular formula is C7H17Cl2N2O3P, Related Products of 6055-19-2.

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

Al-Masum, Mohammad; Legan, Sarah; Liu, Kwei-Yu published the artcile< Pd-catalyzed microwave irradiated regioselective aroylation reaction of crotyl- and allyltrifluoroborates>, Quality Control of 162046-61-9, the main research area is alkenone preparation regioselective diastereoselective chemoselective microwave irradiation; trifluoroborate salt aroyl chloride aroylation palladium catalyst.

An interesting regioselectivity is observed when the mixture of potassium crotyltrifluoroborate and aroyl chlorides RC(O)Cl (R = 3,4,6-trifluorophenyl, naphth-2-yl, 4-bromophenyl, etc.) having electron-deficient and electron-rich groups is microwaved in the presence of palladium-catalyst. In the case of electron withdrawing group with Ph ring of aroyl chlorides, isomerized α,β-unsaturated compound RC(O)CH(CH3)=CHCH3 is a product, whereas the electron donating group with Ph ring of aroyl chlorides furnishes α-adduct RC(O)CH(CH3)CH=CH2. Similar aroylation reaction is also established for potassium allyltrifluoroborate. In this case, regioselectivity is unaffected with changing electron-rich or electron-deficient groups in Ph ring of the aroyl chlorides. Reactions proceed with, essentially in same rate, to afford the corresponding aryl propenyl ketones (crotonophenones) RC(O)CH=CHCH3 in good to high yields.

International Journal of Organic Chemistry published new progress about Aromatic acid chlorides Role: RCT (Reactant), RACT (Reactant or Reagent). 162046-61-9 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H4ClF3O2, Quality Control of 162046-61-9.

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

Borra, Satheesh; Chae, Soyeon; Kim, Hun Young; Oh, Kyungsoo published the artcile< Continuous Flow Synthesis of 1,4-Benzothiazines Using Ambivalent Reactivity of (E)-β-Chlorovinyl Ketones: A Point of Reaction Control Enabled by Flow Chemistry>, Computed Properties of 17082-09-6, the main research area is benzothiazine preparation diastereoselective flow; chlorovinyl ketone dithiodianiline cyclization.

A continuous flow system to 1,4-benzothiazines I (R = H, OMe, Cl, Br, CF3; R1 = H; RR1 = -CH=CH-CH=CH-; R2 = n-Bu, Ph, Bn, 2-(1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl)ethyl, etc.; R3 = Ph, 4-chlorophenyl, furan-2-yl, benzo[d][1,3]dioxol-5-yl, etc.) was developed using the point of reaction control, where the ambivalent (E)-β-chlorovinyl ketones R1CH2C(Cl)=CHC(O)R2 and 2,2′-dithiodianilines II were confined in a diffusion controlled flow setting. The successful segregation of reactive chem. species in a flow setting allowed more defined reaction pathways that are not feasible in traditional batch reaction conditions. The point of reaction control in flow systems helps to execute the reactions often plagued with the concurrent generation of multiple chem. species.

Organic Letters published new progress about Benzothiazines Role: PRP (Properties), SPN (Synthetic Preparation), PREP (Preparation). 17082-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H7ClO, Computed Properties of 17082-09-6.

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

Wu, Feng-Wei; Mao, Yang-Jie; Pu, Jun; Li, Huan-Le; Ye, Peng; Xu, Zhen-Yuan; Lou, Shao-Jie; Xu, Dan-Qian published the artcile< Ni-catalyzed deamidative fluorination of amides with electrophilic fluorinating reagents>, Application In Synthesis of 17082-09-6, the main research area is acyl fluoride preparation; amide selectfluor deamidative fluorination nickel catalyst.

Here, a Ni-catalyzed deamidative fluorination of diverse acylglutarimides I (R = 4-propylphenyl, 2-naphthyl, (2E)-3-phenylprop-2-en-1-yl, etc.) with electrophilic fluorinating reagents (selectfluor) has been described. Different types of amides including aromatic amides and olefinic amides I were well compatible, affording the corresponding acyl fluorides RC(O)F in good to excellent yields.

Organic & Biomolecular Chemistry published new progress about Acid fluorides Role: SPN (Synthetic Preparation), PREP (Preparation). 17082-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H7ClO, Application In Synthesis of 17082-09-6.

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

Ding, Su-Ying; Yu, Si-Qi; Wang, Xiao-Xia; Wu, Zi-Hua; Li, Wen-Qin; Jia, Wei; Xie, Hua-Qing published the artcile< Fabrication of buffer-window layer system for Cu(ln, Ga)Se2 thin film devices by chemical bath deposition and Sol-Gel methods>, HPLC of Formula: 22519-64-8, the main research area is fabrication buffer window layer system copper indium gallium selenium; thin film device chem bath deposition Soluble gel method.

Recently, nontoxic fabrication for Cu(ln, Ga)Se2 thin films gained increasing popularity. In this work, chem. bath deposition and Sol-gel methods were utilized in the fabrication of an environmentally buffer-window (ZnS-ZnO/ZnO:AI) layer system for Cu(ln, Ga)Se2 thin film devices. The influences of conditions like annealing temperature, coating times, and Al-doping amount were investigated. The surface morphol. and optical properties illustrated a compact and uniform ZnS film with a band-gap of 3.78, which can be a good alternative to CdS film. Resistivity of 0.35 ω.cm for the ZnO/ZnO:AI film was achieved by the ideal condition of 9 coating times and 5 Al-doping amounts A cross-sectional view of the complete Cu(ln, Ga)Se2 thin film was obtained, and the structure status was analyzed.

Journal of Nanoelectronics and Optoelectronics published new progress about Absorbents. 22519-64-8 belongs to class chlorides-buliding-blocks, and the molecular formula is Cl3H8InO4, HPLC of Formula: 22519-64-8.

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

Nguyen, Son T.; Kwasny, Steven M.; Ding, Xiaoyuan; Cardinale, Steven C.; McCarthy, Courtney T.; Kim, Hong-Suk; Nikaido, Hiroshi; Peet, Norton P.; Williams, John D.; Bowlin, Terry L.; Opperman, Timothy J. published the artcile< Structure-activity relationships of a novel pyranopyridine series of Gram-negative bacterial efflux pump inhibitors>, Formula: C8H8BrCl, the main research area is pyranopyridine antibacterial efflux pump inhibitor pharmacokinetics; Adjunctive therapy; Antibacterial; Efflux pump inhibitor; Enterobacteriaceae; Pyranopyridine.

Recently the authors described a novel pyranopyridine inhibitor (MBX2319) of RND-type efflux pumps of the Enterobacteriaceae. MBX2319 (3,3-dimethyl-5-cyano-8-morpholino-6-(phenethylthio)-3,4-dihydro-1H-pyrano[3,4-c]pyridine) is structurally distinct from other known Gram-neg. efflux pump inhibitors (EPIs), such as 1-(1-naphthylmethyl)-piperazine (NMP), phenylalanylarginine-β-naphthylamide (PAβN), D13-9001, and the pyridopyrimidine derivatives Here, the authors report the synthesis and biol. evaluation of 60 new analogs of MBX2319 that were designed to probe the structure activity relationships (SARs) of the pyranopyridine scaffold. The results of these studies produced a mol. activity map of the scaffold, which identifies regions that are critical to efflux inhibitory activities and those that can be modified to improve potency, metabolic stability and solubility Several compounds are significantly more effective than MBX2319 at potentiating the antibacterial activity of levofloxacin and piperacillin against Escherichia coli.

Bioorganic & Medicinal Chemistry published new progress about Antibacterial agents. 16799-05-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H8BrCl, Formula: C8H8BrCl.

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

Mishra, Aniket; Bhowmik, Arup; Samanta, Siddhartha; Sarkar, Writhabrata; Das, Sumit; Deb, Indubhusan published the artcile< Diastereoselective Spirocyclization of Benzoxazines with Nitroalkenes via Rhodium-Catalyzed C-H Functionalization/Annulation Cascade under Mild Conditions>, Computed Properties of 5153-70-8, the main research area is tetrahydrospirobenzooxazineindene diastereoselective preparation; benzoxazine nitroalkene diastereoselective spirocyclization rhodium catalyst.

A Rh(III)-catalyzed [3 + 2] annulation of benzoxazines with nitroolefins that proceeds via redox-neutral C-H functionalization has been demonstrated, leading to the novel class of spirocycles in a single step. The construction of three continuous stereogenic centers has been achieved starting from easily accessible achiral substrates in an atom-efficient manner under mild reaction conditions. A broad range of pharmaceutically relevant nitro substituted spirocyclic 2,3-dihydro-1,4-benzoxazine derivatives has been synthesized in good to excellent yields with high diastereoselectivity.

Organic Letters published new progress about Alkenes, nitro Role: RCT (Reactant), RACT (Reactant or Reagent). 5153-70-8 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H6ClNO2, Computed Properties of 5153-70-8.

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

Stoyanova-Slavova, Iva B.; Slavov, Svetoslav H.; Pearce, Bruce; Buzatu, Dan A.; Beger, Richard D.; Wilkes, Jon G. published the artcile< Partial least square and k-nearest neighbor algorithms for improved 3D quantitative spectral data-activity relationship consensus modeling of acute toxicity>, Electric Literature of 3964-57-6, the main research area is acute toxicity modeling QSDAR; 3D quantitative spectral data-activity relationship (QSDAR); Aquatic toxicology; Computational toxicology; Consensus modeling; Multivariate statistic.

A diverse set of 154 chems. that included US Food and Drug Administration-regulated compounds tested for their aquatic toxicity in Daphnia magna were modeled by a 3-dimensional quant. spectral data-activity relationship (3D-QSDAR). Two distinct algorithms, partial least squares (PLS) and Tanimoto similarity-based k-nearest neighbors (KNN), were used to process bin occupancy descriptor matrixes obtained after tessellation of the 3D-QSDAR space into regularly sized bins. The performance of models utilizing bins ranging in size from 2 ppm × 2 ppm × 0.5 Å to 20 ppm × 20 ppm × 2.5 Å was explored. Rigorous quality-control criteria were imposed: 100 randomized 20% hold-out test sets were generated and the average R2test of the resp. models was used as a measure of their performance, and a Y-scrambling procedure was used to identify chance correlations. A consensus between the best-performing composite PLS model using 0.5 Å × 14 ppm × 14 ppm bins and 10 latent variables (average R2test = 0.770) and the best composite KNN model using 0.5 Å × 8 ppm × 8 ppm and 2 neighbors (average R2test = 0.801) offered an improvement of about 7.5% (R2test consensus = 0.845). Projection of the most frequently occurring bins on the standard coordinate space indicated that the presence of a primary or secondary amino group-substituted aromatic systems-would result in an increased toxic effect in Daphnia. The presence of a second aromatic ring with highly electroneg. substituents 5 Å to 7 Å apart from the first ring would lead to a further increase in toxicity. Environ Toxicol Chem 2014;33:1271-1282.

Environmental Toxicology and Chemistry published new progress about Acute toxicity. 3964-57-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H7ClO3, Electric Literature of 3964-57-6.

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

Sari, Sait; Unalan, Seda; Yilmaz, Mehmet published the artcile< Synthesis and characterization of unsaturated diacyl and alkyl-acyl piperazine derivatives>, COA of Formula: C9H7ClO, the main research area is unsaturated diacyl alkyl acyl piperazine preparation.

The aim of this study is to obtain new unsaturated piperazine compounds by the reaction of piperazine derivatives with acyl chlorides. Methacryloyl piperazine was synthesized from the reaction of methacrylic anhydride with piperazine. Few acyl chlorides were prepared by the reaction of thionyl chloride with carboxylic acids which were obtained as a result of the reaction of malonic acid and suitable aldehydes. The remaining acyl chlorides were synthesized by the reaction of thionyl chloride with carboxylic acids which were obtained from hydrolyzation of esters. Sym. diacyl piperazine compounds were obtained from the reaction of Methacryloyl piperazine with corresponding acyl chlorides. In addition, from the reaction of Methacryloyl piperazine and corresponding acyl chlorides, nonsym. diacyl piperazine compounds were synthesized in medium to good yields (63%-84%). Also, alkyl-acyl piperazine compounds were obtained from the reaction of allyl piperazine and cinnamyl piperazine with corresponding acyl chlorides.

Turkish Journal of Chemistry published new progress about Acid chlorides Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 17082-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H7ClO, COA of Formula: C9H7ClO.

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

Li, Minyan; Berritt, Simon; Walsh, Patrick J. published the artcile< Palladium-Catalyzed Regioselective Arylation of 1,1,3-Triaryl-2-azaallyl Anions with Aryl Chlorides>, COA of Formula: C6H3ClF2, the main research area is regioselective arylation triarylazaallyl anion aryl chloride palladium catalyst; diarylmethylamine derivative preparation one pot ketimine synthesis arylation.

A regioselective arylation of 1,1,3-triaryl-2-azaallyl anions with aryl chlorides is described. The palladium-NIXANTPHOS-based catalyst affords diarylmethylamine derivatives in good yield and without product isomerization. A gram scale sequential one-pot ketimine synthesis/arylation protocol was also developed.

Organic Letters published new progress about Aldimines Role: RCT (Reactant), RACT (Reactant or Reagent). 1435-43-4 belongs to class chlorides-buliding-blocks, and the molecular formula is C6H3ClF2, COA of Formula: C6H3ClF2.

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