Category: chlorides-buliding-blocks

Bali, Sumit; Singh, Ajai K.; Sharma, Pankaj; Toscano, R. A.; Drake, J. E.; Hursthouse, M. B.; Light, M. E. published the artcile< 2-[2-(4-Methoxyphenyltelluro)ethyl]thiophene (L1) bis[2-(2-thienyl)ethyl] telluride (L2) and their metal complexes; crystal structure of trans-dichlorobis{2-(2-(4-methoxyphenyltelluro)ethyl)thiophene-Te}palladium(II) and {bis[2-(2-thienyl)ethyl] telluride}dichloro(p-cymene)ruthenium(II)>, Quality Control of 19995-38-1, the main research area is methoxyphenyltelluroethylthiophene preparation transition metal complex; crystal structure palladium methoxyphenyltelluroethylthiophene ruthenium; bisthienylethyltelluride preparation palladium ruthenium complex.

The reaction of ArTe- (Ar = 4-MeOC6H4) and Te2- generated in situ by borohydride reduction of Ar2Te2 and Te, resp., with 2-(2-thienyl)ethyl chloride resulted in 2-[2-(4-methoxyphenyltelluro)ethyl]thiophene (L1) and bis[2-(2-thienyl)ethyl] telluride (L2), resp. Their complexes [AgNO3(L1)] (1) [PdCl2(L1)2] (2) [PtCl2(L1)2] (3) [HgBr2(L1)]2 (4) [Ru(p-cymene)Cl2(L1)] (5) [Ru(p-cymene)Cl2(L2)] (6) and [PdCl2(L2)2] were synthesized. The ligands and complexes exhibit characteristic 1H and 13C{1H} NMR spectra. Both the ligands coordinate only through Te in all the complexes. The single crystals of 2 and 6 were characterized by x-ray diffraction. Compound 2 has square planar geometry around Pd and trans arrangement of ligands. The Pd-Te bond distances 2.5951(7) and 2.5872(7) Å are longer than the values expected due to strong trans influence. The unique intermol. secondary Te···Cl interaction (distance = 3.450/3.449 Å) between neighboring mols. was observed in the crystal structure of 2. The distance between Pd atoms of two neighboring mols. 3.2143(10) Å also was found less than the sum of van der Waals radii 3.26 Å. These secondary interactions in 2 gave a dimeric species, which remains intact even in the solution Compound 6 is a half sandwich having three coordination sites occupied by two Cl atoms and the Te atom of L2 with Ru-Te bond distance of 2.6528(9) Å and Ru-Cl, 2.415(2)/2.422(2) Å.

Journal of Organometallic Chemistry published new progress about Crystal structure. 19995-38-1 belongs to class chlorides-buliding-blocks, and the molecular formula is C6H7ClS, Quality Control of 19995-38-1.

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

Genc, Hayriye Nevin; Ozgun, Ummu; Sirit, Abdulkadir published the artcile< Design, synthesis and application of chiral tetraoxacalix[2]arene[2]triazine-based organocatalysts in asymmetric Michael addition reactions>, Application In Synthesis of 5153-70-8, the main research area is aryl dimethyl nitrobutanal preparation enantioselective; isobutyraldehyde nitrostyrene Michael oxacalixarene triazine organocatalyst; Michael addition; asymmetric synthesis; organocatalysis; stereoselectivity; tetraoxacalix[2]arene[2]triazine.

A novel type of (R,S)/(S,R)-oxacalix[2]arene[2]triazine-based organocatalysts I for asym. Michael reactions is reported for the first time. Chiral subunits were attached to the heteroatom-bridged calixarom. platform by a reaction of (R)- and (S)-1-aminotetraline with tetraoxacalix[2]arene[2]triazine in both enantiomeric forms. To evaluate the catalytic efficiency of the novel organocatalysts , isobutyraldehyde reacted with various substituted and unsubstituted aromatic trans-β-nitrostyrenes (E)-RCH=CHNO2 (R = Ph, 2-bromophenyl, furan-2-yl, etc.) in THF (THF), leading to Michael adducts (S)-HC(O)C(CH3)2CH(R)CH2NO2 in excellent yields and enantioselectivites (up to 97% yield and 99% ee).

Chirality published new progress about Aromatic hydrocarbons Role: SPN (Synthetic Preparation), PREP (Preparation). 5153-70-8 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H6ClNO2, Application In Synthesis of 5153-70-8.

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

Candish, Lisa; Lupton, David W. published the artcile< N-heterocyclic carbene cascade catalysis: Dual Bronsted/Lewis base rearrangement of cyclopropyl enol esters to dihydropyranones>, Formula: C10H9ClO2, the main research area is heterocyclic carbene cascade catalysis Bronsted Lewis base rearrangement; cyclopropyl enol ester dihydropyranone rearrangement.

The first example of Broensted/Lewis base cascade catalysis using an N-heterocyclic carbene was realized through the rearrangement of cyclopropyl esters to dihydropyranones. The scope and mechanism of this transformation was examined implicating a novel NHC-mediated electrocyclic cyclopropane rearrangement followed by an anionic oxy Claisen-rearrangement.

Chemical Science published new progress about Acylation (proton transfer and O-). 90940-40-2 belongs to class chlorides-buliding-blocks, and the molecular formula is C10H9ClO2, Formula: C10H9ClO2.

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

Kovalcik, Thomas R.; Guillory, J. Keith published the artcile< The stability of cyclophosphamide in lyophilized cakes. Part I. Mannitol, lactose, and sodium bicarbonate as excipients>, COA of Formula: C7H17Cl2N2O3P, the main research area is cyclophosphamide stability lyophilization; mannitol cyclophosphamide stability lyophilization; lactose cyclophosphamide stability lyophilization; bicarbonate cyclophosphamide stability lyophilization.

Lyophilized products containing cyclophosphamide (I) and one of the following excipients: mannitol, lactose, NaHCO3, or sorbitol, were prepared All of the products were well-formed cakes with the exception of the one containing I and sorbitol, which was a collapsed mass. I in lyophilized cakes containing mannitol, lactose, or NaHCO3 undergo rapid (t90 ≈ 15 days) degradation in the solid state. A simple method was developed which permits introduction of measured quantities of water vapor into the lyophilized cake. In the cakes containing mannitol or NaHCO3 as adjuvants, DSC and x-ray diffraction showed that I was converted from the amorphous to the monohydrate form when exposed to moisture, and exhibited improved stability. In the case of the cake containing lactose, the lactose, but not the I, was converted to a monohydrate, and the stability of I was not improved.

Journal of Parenteral Science and Technology published new progress about Freeze drying. 6055-19-2 belongs to class chlorides-buliding-blocks, and the molecular formula is C7H17Cl2N2O3P, COA of Formula: C7H17Cl2N2O3P.

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

Catarzi, Daniela; Colotta, Vittoria; Varano, Flavia; Calabri, Francesca Romana; Filacchioni, Guido; Galli, Alessandro; Costagli, Chiara; Carla, Vincenzo published the artcile< Synthesis and Biological Evaluation of Analogues of 7-Chloro-4,5-dihydro-4- oxo-8-(1,2,4-triazol-4-yl)-1,2,4-triazolo[1,5-a]quinoxaline-2-carboxylic Acid (TQX-173) as Novel Selective AMPA Receptor Antagonists>, Quality Control of 35375-74-7, the main research area is TQX 173 preparation AMPA receptor antagonist; carboxypyrrolyl triazoloquinoxalinecarboxylate TQX 173 preparation AMPA receptor antagonist; pyrrolyl triazoloquinoxalinecarboxylate TQX 173 preparation AMPA receptor antagonist; triazolyl pyrrolyl triazoloquinoxalinecarboxylate TQX 173 preparation AMPA receptor antagonist; imidazolyl pyrrolyl triazoloquinoxalinecarboxylate TQX 173 preparation AMPA receptor antagonist; amino pyrrolyl triazoloquinoxalinecarboxylate TQX 173 preparation AMPA receptor antagonist; kainate aminopyrrolyl triazoloquinoxalinecarboxylate TQX 173 preparation AMPA receptor antagonist; neuroprotective aminopyrrolyl triazoloquinoxalinecarboxylate TQX 173 preparation AMPA receptor antagonist; anticonvulsant aminopyrrolyl triazoloquinoxalinecarboxylate TQX 173 preparation AMPA receptor antagonist; cytoprotective aminopyrrolyl triazoloquinoxalinecarboxylate TQX 173 preparation AMPA receptor antagonist.

In recent papers (Catarzi, D.; et al. J. Med. Chem. 2000, 43, 3824-3826; 2001, 44, 3157-3165) the authors reported chem. and biol. studies on 4,5-dihydro-4-oxo-1,2,4-triazolo[1,5-a]quinoxaline-2-carboxylates (TQXs) bearing different nitrogen-containing heterocycles at position-8. In particular, from these studies it emerged that both the 7-chloro-4,5-dihydro-4-oxo-8-(1,2,4-triazol-4-yl)-1,2,4-triazolo[1,5-a]quinoxaline-2-carboxylic acid TQX-173 and its corresponding Et ester were the most active and selective compounds of this series. In pursuing the investigation on the structure-activity relationships of these TQX derivatives, different electron-withdrawing groups (CF3, NO2) were introduced at position 7 on the TQX ring system, replacing the 7-chloro substituent of TQX-173 and of other selected 8-heteroaryltriazoloquinoxaline-2-carboxylates previously described. All the newly synthesized compounds were biol. evaluated for their binding at the Gly/NMDA, AMPA, and KA high-affinity receptors. Gly/NMDA binding assays were performed to assess the selectivity of the reported compounds toward the AMPA receptor. Compounds endowed with micromolar binding affinity for the KA high-affinity binding site were also evaluated for their binding at the KA low-affinity receptor. Some selected compounds were also tested for their functional antagonist activity at the AMPA and NMDA receptor-ion channel complex. The results obtained in this study have pointed out that 4,5-dihydro-7-nitro-4-oxo-8-(3-carboxypyrrol-1-yl)-1,2,4-triazolo[1,5-a]quinoxaline-2-carboxylic acid and its corresponding Et ester are the most potent and selective AMPA receptor antagonists reported to date among the TQX series.

Journal of Medicinal Chemistry published new progress about AMPA receptors Role: BCP (Biochemical Process), BIOL (Biological Study), PROC (Process) (AMPA receptor antagonists). 35375-74-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C7H4ClF3N2O2, Quality Control of 35375-74-7.

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

Rogers, David A.; Gallegos, Jillian M.; Hopkins, Megan D.; Lignieres, Austin A.; Pitzel, Amy K.; Lamar, Angus A. published the artcile< Visible-light photocatalytic activation of N-chlorosuccinimide by organic dyes for the chlorination of arenes and heteroarenes>, SDS of cas: 128-09-6, the main research area is arene chlorosuccinimide methylene green catalyst photochem chlorination.

A variety of arenes and heteroarenes are chlorinated in moderate to excellent yields using N-chlorosuccinimide (NCS) under visible-light activated conditions. A screening of known organic dye photocatalysts resulted in the identification of methylene green as the most efficient catalyst to use with NCS. According to mechanistic studies described within, the reaction was speculated to proceed via a single electron oxidation of NCS utilizing methylene green under visible-light photoredox pathway. The photo-oxidation of NCS amplifies the electrophilicity of the chlorine atom of the NCS, thus led to enhanced reactivity as a chlorinating reagent with aromatic substrates.

Tetrahedron published new progress about Aromatic hydrocarbons Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 128-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C4H4ClNO2, SDS of cas: 128-09-6.

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

Zhang, Lin; Bu, Ran; Liu, Xiao-Yan; Mu, Peng-Fei; Gao, En-Qing published the artcile< Schiff-base molecules and COFs as metal-free catalysts or silver supports for carboxylation of alkynes with CO2>, Category: chlorides-buliding-blocks, the main research area is alkynoic acid preparation; alkyne terminal carboxylation carbon dioxide organocatalyst; Schiff base covalent organic framework preparation alkyne carboxylation catalyst.

Carboxylation of terminal alkynes with CO2 to produce propiolic acids is an atom economical and high-value route for CO2 fixation and utilization, but the conversion under mild conditions needs transition metal catalysts. In this article, the application of transition-metal-free organocatalysts for the reaction have been demonstrated for the first time. These efficient catalysts are Schiff bases derived from 1,3,5-triformylphloroglucinol, either homogeneous (discrete mols.) or heterogeneous (covalent organic frameworks, COFs). The key catalytic sites are phenoxo and imine groups, which activate CO2 through phenoxo-CO2 complexation and also activate the C(sp)-H bond through bifurcate C-H···Nimine and C-H···Ophenoxo hydrogen bonds. The 2,2′-bipyridyl sites in the COF also contribute to the catalytic performance. The COF catalyst is less active than the mol. one but has the advantages of heterogeneous catalysis. Higher performance was also demonstrated by combining silver nanoparticles with the intrinsically catalytic COF. This work opens up the potential of developing transition-metal-free catalysts for the CO2 conversion reaction and demonstrates the new prospects of COFs as tailorable platforms for heterogeneous catalysis.

Green Chemistry published new progress about Alkynes, α- Role: RCT (Reactant), RACT (Reactant or Reagent). 3240-10-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H5ClO2, Category: chlorides-buliding-blocks.

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

Hoque, Emdadul Md; Bisht, Ranjana; Unnikrishnan, Anju; Dey, Sayan; Mahamudul Hassan, Mirja Md; Guria, Saikat; Rai, Rama Nand; Sunoj, Raghavan B.; Chattopadhyay, Buddhadeb published the artcile< Iridium-Catalyzed Ligand-Controlled Remote para-Selective C-H Activation and Borylation of Twisted Aromatic Amides>, SDS of cas: 162046-61-9, the main research area is regioselective remote para borylation CH activation twisted aromatic amide; aryl boronate preparation regioselective remote para borylation aromatic amide; potential energy surface para CH borylation twisted aromatic amide; Borylation; C−H Activation; Density Functional Calculations; Iridium Catalyst; Para Selectivity.

A method of para-selective borylation of fully twisted aromatic amides ArCONBoc2 is described, yielding boronamides 4-pinBC6HnX4-nCONBoc2 (X = alkyl, alkoxy, aryl, halo, CN). The borylation proceeded via an unprecedented substrate-ligand distortion between the twisted aromatic amides and a newly designed ligand framework, 4,5-diaza-9H-fluorene (defa) that is different from the traditionally used ligand (dtbpy) for the C-H borylation reactions. The designed ligand defa has led to the development of a new type of catalytic system that shows excellent para selectivity for a range of aromatic amides. Moreover, the designed ligand has shown excellent reactivity and selectivity for a range of heterocyclic aromatic amides. The identification of key transition states and intermediates using the DFT computations associated with the three regio-isomeric pathways revealed that the most efficient catalytic pathway with the defa ligand leads to the para borylation while in the case of bpy the borylation at the para and meta sites compete.

Angewandte Chemie, International Edition published new progress about Aromatic amides Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 162046-61-9 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H4ClF3O2, SDS of cas: 162046-61-9.

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

Xu, Hui; Zhang, Hong; Tong, Qing-Xiao; Zhong, Jian-Ji published the artcile< Photoredox/cobaloxime co-catalyzed allylation of amines and sulfonyl hydrazides with olefins to access α-allylic amines and allylic sulfones>, Safety of 3-Chloro-4-methylbenzene-1-sulfonyl chloride, the main research area is allylic amine preparation green chem; phenyl tetrahydroisoquinoline methylpropenoate allylation photoredox cobaloxime catalyst; allyl sulfone preparation green chem; sulfonyl hydrazide methyl styrene allylic sulfonylation photoredox cobaloxime catalyst.

A dual-catalytic platform for the allylation of N-phenyltetrahydroisoquinolines I (R = R1 = H, OMe; R2 = H, 3-Me, 2-OMe, 4-Cl) and sulfonyl hydrazides R3SO2NHNH2 (R3 = Ph, cyclopropyl, Pr, etc.) with olefins CH3C(=CH2)R4 (R4 = C(O)OMe, C(O)OCH(CH3)2, C6H5, 4-ClC6H4, etc.) to selectively access α-allylic amines II and allylic sulfones R3SO2CH2C(=CH2)R4 in good yields by combining photoredox catalysis and cobaloxime catalysis was reported. This strategy avoided the use of a stoichiometric amount of terminal oxidant and the use of pre-functionalized allylic precursors, representing a green and ideal atom- & step-economical process. Good substrate scope and gram-scale synthesis demonstrated the utility of this protocol. Mechanistic studies revealed that a radical process is probably involved in this reaction.

Organic & Biomolecular Chemistry published new progress about Allylation. 42413-03-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C7H6Cl2O2S, Safety of 3-Chloro-4-methylbenzene-1-sulfonyl chloride.

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

Gallagher, Rory T.; Basu, Souradeep; Stuart, David R. published the artcile< Trimethoxyphenyl (TMP) as a Useful Auxiliary for in situ Formation and Reaction of Aryl(TMP)iodonium Salts: Synthesis of Diaryl Ethers>, Synthetic Route of 16766-30-6, the main research area is diaryl ether preparation chemoselective; aryl iodonium salt arylation.

Herein, a synthetic approach for arylation that exploits the in situ formation and reaction of an unsym. diaryliodonium salt is described. In this way, aryl iodides are used as reagents in a metal-free reaction with phenols, and a trimethoxyphenyl (TMP) group is used as a “”dummy”” group to facilitate transfer of a wide range of aryl moieties. The scope of aryl electrophiles and phenol nucleophiles is broad (>30 examples) and the yields are high (52-95%, 80% avg.). One-pot coupling reactions avoid the synthesis of diaryliodonium salts and provide opportunities for sequential reactions and novel chemoselectivity.

Advanced Synthesis & Catalysis published new progress about Aromatic ethers Role: SPN (Synthetic Preparation), PREP (Preparation). 16766-30-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C7H7ClO2, Synthetic Route of 16766-30-6.

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