Tag: M.W=250-300

Suzuki, Hitomi published the artcileJacobsen reaction. V. Direct iodination of polyalkylbenzenes by the crossed Jacobsen reaction, COA of Formula: C10H13I, the main research area is .

cf. CA 60, 6732f. Slow, simultaneous addition of H2SO4 and o-MeOC6H4I (I) to a stirred polyalkylbenzene (II), or its solution in cyclohexane (III), the mixture stirred some time and poured into H2O, and the organic material separated, washed with aqueous NaHSO3, and worked up by fractional distillation (if liquid hydrocarbon) or chromatography on Al2O3 (if solid hydrocarbon) gave a polyalkyliodobenzene (IV). Thus, 24.3 g. p-(iso-Pr)2C6H4 (V) at 35-40° treated, over 1.5 hrs., with 23.4 g. I and 15 g. H2SO4, stirring continued 4 hrs., and the mixture poured into H2O and worked up gave 13.8 g. V, 7.1 g. mixture of I and a dealkylated iodo compound, and 6.0 g. 2,5-(isoPr)2C6H3I, b22 143-6°. Similarly were prepared (II, g. II, hrs. stirring, reaction temperature, IV, g. IV, and m.p. or b.p./mm. IV given): p-(tert-Bu)2C6H4, 3.7 (in 25 ml. III, 3, 30-3°, 2,5-diiodo-1,4-di-tert-butylbenzene (?), –, 49-50°; 1,2,4-Me3C6H3, 12.0, –, –, monoiodo product, 14.5, 121-5°/17-18; 1,3,5-Et3C6H3, 24.3, overnight, 30-2°, 2,4,6-Me3C6H2I, 17.1, 169-70°/31; 1,3,5-(iso-Pr)3C6H3, 20.4, 3 (then left overnight), 35-8°, 2,4,6-(iso-Pr)3C6H2I, 5.9, 173-5°/28; 1,2,4,5-Me4C6H2, 4.0, 4, 30-5°, 2,-3,5,6-Me4C6HI, 5.2, 80-1°; 1,2,4,5-Et4C6H2, 28.5, 4, 30-3°, 2,3,5,6-Et4C6HI, 13.5, 186-8°/26; Me5C6H, 7.4 (in 10 ml. III), 4, 34-6°, Me5C6I, 7.9, 141-2°. 1,2,4,5-(iso-Pr)4C6H2 did not react under these conditions.

Bulletin of the Chemical Society of Japan published new progress about Iodination. 2100-25-6 belongs to class iodides-buliding-blocks, name is 3-Iodo-1,2,4,5-tetramethylbenzene, and the molecular formula is C10H13I, COA of Formula: C10H13I.

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Bartos, Paulina published the artcileSubstituent effects on the electronic structure of the flat Blatter radical: correlation analysis of experimental and computational data, Application of 4-Iodo-2-nitrophenol, the main research area is phenyl triazinophenoxazinyl preparation crystal structure substituent effect.

A series of C(10)-substituted derivatives of 2-Ph-3H-[1,2,4]triazino[5,6,1-kl]phenoxazin-3-yl was obtained using the aza-Pschorr, photochem. and radical-induced cyclization reactions, and through functional group transformations of the C(10)-amino and C(10)-iodo derivatives The iodo derivative underwent Pd-catalyzed C-C cross coupling reactions leading to the installation of Ph, 2-thienyl and ethynylbenzene groups at the C(10) position effectively extending electronic conjugation. The substituent effect on the electronic properties of the 3H-[1,2,4]triazino[5,6,1-kl]phenoxazin-3-yl was investigated in twenty one derivatives with a diverse range of functional groups by spectroscopic (UV-vis and EPR) and electrochem. methods augmented with DFT calculations Results show that the lowest energy electronic absorption and redox potentials correlate well with the σp substituent parameter, while aN hfcc and the N-H bond dissociation energy (BDE) are well described by the σm parameter. In general, increasing the electron donating ability of the C(10)-X substituent lowers the π-π*(1) excitation energy, cathodically shifts the redox potentials, increases spin delocalization beyond the [1,2,4]triazinyl ring and lowers BDE. The latter two parameters are important indicators of the overall radical stability. Mol. and crystal structures of three radicals were established with the single crystal XRD method.

New Journal of Chemistry published new progress about Acylation. 21784-73-6 belongs to class iodides-buliding-blocks, name is 4-Iodo-2-nitrophenol, and the molecular formula is C6H4INO3, Application of 4-Iodo-2-nitrophenol.

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Li, Wen-Pei published the artcileAcid-Free Copper-Catalyzed Electrophilic Nitration of Electron-Rich Arenes with Guanidine Nitrate, SDS of cas: 21784-73-6, the main research area is arene guanidine nitrate copper catalyst electrophilic nitration; nitroarene preparation.

A practical copper-catalyzed nitration of electron-rich arenes with trimethylsilyl chloride and guanidine nitrate is reported. A variety of nitrated products were generated in moderate to excellent yields (32%-99%) at ambient temperature under acid free, open-flask and operationally simple conditions.

Journal of Organic Chemistry published new progress about Nitration. 21784-73-6 belongs to class iodides-buliding-blocks, name is 4-Iodo-2-nitrophenol, and the molecular formula is C6H4INO3, SDS of cas: 21784-73-6.

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Blanksma, J. J. published the artcileSweet taste of 4-nitro-2-aminotoluene, 4-nitro-2-aminobenzoic acid, and 2-nitro-4-aminobenzoic acid, Recommanded Product: 4-Iodo-3-nitroaniline, the main research area is .

4,2-O2N(H2N)C6H3Me, m. 107°, is 330 times as sweet as sucrose. 2,4-O2N(H2N)C6H3Me, m. 78°, is tasteless with a faintly bitter after-taste. The Ac derivatives of the 2 isomers are tasteless. 4,2-O2N(AcHN)C6H3Me (1 g.) in 250 cc. H2O, oxidized with 1.6 g. KMnO4 in 100 cc. H2O (refluxing 3 hrs.), and the Ac derivative (m. 215°) hydrolyzed with concentrated HCl in EtOH, gives 4,2-O2N(H2N)C6H3CO2H, m. 264°, which is 25 times as sweet as sugar; the Ac derivative, the Me ester, and its Ac derivative, m. 144°, are tasteless. 2,4-O2N(H2N)C6H3CO2H, m. 239°, is 120 times as sweet as sucrose; the Na salt is also very sweet but the Ac derivative is tasteless. o-HOC6H4CO2H has a relative degree of sweetness of 4 but the Na salt is 28 times as sweet as sucrose. There is no noticeable relation between the sweet taste and the local anesthetic activity of these compounds

Recueil des Travaux Chimiques des Pays-Bas et de la Belgique published new progress about Sweetness. 105752-04-3 belongs to class iodides-buliding-blocks, name is 4-Iodo-3-nitroaniline, and the molecular formula is C6H5IN2O2, Recommanded Product: 4-Iodo-3-nitroaniline.

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Blanksma, J. J. published the artcileSweet taste of the 1-halo-2-amino-4-nitrobenzenes, Application In Synthesis of 105752-04-3, the main research area is .

2,4-(O2N)2C6H3F (10 g.) in 50 cc. EtOH and 100 cc. H2O, reduced with 30 g. SnCl2 in dilute HCl and the reduction product distilled with steam, gives, as the nonvolatile fraction, 2,4-O2N(H2N)C6H3F, m. 96°, which is tasteless (Ac derivative, m. 139°, also tasteless); the volatile fraction is 2,4-H2N(O2N)C6H3F, m. 102°; 1 g. in 100 cc. H2O is 40 times as sweet as a solution of 1 g. of sucrose in 100 cc. H2O (used as a standard in all tests); the Ac derivative, m. 178°, is tasteless, as is the 3,5-di-Br derivative, pale yellow, m. 119°. 2,4-H2N(O2N)C6H3Cl is 400 times as sweet as glucose; 100 mg. are soluble in 1 l. H2O at 17°, and 1.5 g. distill with 1000 g. steam; the di-Ac derivative, m. 70°, is tasteless, as is the 3,5-di-Br derivative, m. 99°. 2,4-H2N(O2N)C6H3Br is 800 times as sweet as sucrose; 60 mg. is soluble in 1 l. of H2O at room temperature; 600 mg. pass over with 1 l. steam; the di-Ac derivative, m. 105°; the Bz derivative m. 168°; the carbomethoxy derivative m. 164°; these, as well as the mono-Ac derivative, are tasteless. 2,4-O2N(H2N)C6H3Br and its derivatives are tasteless. 2,4-H2N(O2N)C6H3I, m. 158°, is 1250 times as sweet as sucrose; only 25 mg. pass over with 1 l. H2O and 10 mg. dissolve in 1 l. H2O at room temperature; the 4,2-isomer, m. 142°, is tasteless, as are the Ac and 1,5-I2 derivatives

Recueil des Travaux Chimiques des Pays-Bas et de la Belgique published new progress about Sweetness. 105752-04-3 belongs to class iodides-buliding-blocks, name is 4-Iodo-3-nitroaniline, and the molecular formula is C6H5IN2O2, Application In Synthesis of 105752-04-3.

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Ott, David E. published the artcileInhibition of Friend virus replication by a compound that reacts with the nucleocapsid zinc finger: anti-retroviral effect demonstrated in vivo, Synthetic Route of 105752-04-3, the main research area is retrovirus replication nucleocapsid zinc finger modulator.

The zinc finger structure that is found in the nucleocapsid protein of nearly all retroviruses has been proposed as a target for antiviral therapy. Since compounds that chem. attack the cysteines of the finger have been shown to inactivate both human immunodeficiency virus type 1 (HIV-1) and murine leukemia virus (MuLV) in vitro, 14 of these compounds were tested in an MuLV-induced Friend disease model to assess their ability to inhibit retroviral replication in vivo. Of the 14 compounds tested, only Aldrithiol-2 clearly exhibited anti-retroviral activity as measured indirectly by the delay of Friend disease onset. These results were confirmed by quant. competitive polymerase chain reaction studies which monitored viral spread by measuring the level of viral DNA in the peripheral blood mononuclear cells of treated mice. Comparison of treated mice with untreated mice revealed that Aldrithiol-2 produced a greater than 2-log reduction in virus levels. These results functionally demonstrate that a zinc finger-attacking compound can inhibit viral replication in vivo. Since only 1 of the 14 compounds studied was effective, this study also shows the importance of in vivo testing of these types of antiviral compounds in an animal model. Given the strict conservation of the metal-coordinating cysteine structure within HIV-1 and MuLV zinc fingers, the results support the proposal that anti-retroviral drugs which target the nucleocapsid zinc finger may be clin. useful against HIV-1.

Virology published new progress about Antiviral agents. 105752-04-3 belongs to class iodides-buliding-blocks, name is 4-Iodo-3-nitroaniline, and the molecular formula is C6H5IN2O2, Synthetic Route of 105752-04-3.

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Jin, Zuxi published the artcileSynthesis and structure of a novel alkynyl-containing disulfide compound as cathode materials for secondary lithium batteries, Related Products of iodides-buliding-blocks, the main research area is secondary lithium battery cathode alkynyl disulfide compound synthesis.

A novel alkynyl-containing disulfide compound, 5,8-dihydro-1H,4H-2,3,6,7-tetrathia-anthracen (TMSEDTTA), was synthesized. The structures of the target compound and the intermediates have been identified by 1H NMR, 13C NMR, mass spectrometry, Fourier-transform IR, Raman spectra, XPS, and elemental anal. In addition, the structure of (Z)-(1,2-dibromo-2-(2,3,5,6-tetrakis(bromomethyl)phenyl)vinyl)trimethylsilane was determined by single x-ray anal. Supplementary materials are available for this article. Go to the publisher’s online edition of Synthetic Communications for the following free supplemental resource(s): Full exptl. and spectral details.

Synthetic Communications published new progress about Battery cathodes. 2100-25-6 belongs to class iodides-buliding-blocks, name is 3-Iodo-1,2,4,5-tetramethylbenzene, and the molecular formula is C10H13I, Related Products of iodides-buliding-blocks.

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Ghosh, Soumyajit published the artcileCo-crystals of caffeine with substituted nitroanilines and nitrobenzoic acids: Structure-mechanical property and thermal studies, Recommanded Product: 4-Iodo-3-nitroaniline, the main research area is structure mech property thermal cocrystals caffeine; caffeine cocrystal substituted nitroaniline nitrobenzoic acid crystallog.

Nine new 1 : 1 co-crystals of caffeine with some halogenated nitroanilines and two nitrobenzoic acids were synthesized. These new caffeine (CAF) co-crystals, with 4-nitroaniline (4NA), 4-fluoro-3-nitroaniline (4F3NA), 4-chloro-3-nitroaniline (4Cl3NA), 4-iodo-3-nitroaniline (4I3NA), 2-fluoro-5-nitroaniline (2F5NA), 2-chloro-5-nitroaniline (2Cl5NA), 2-iodo-4-nitroaniline (2I4NA), 2,4-dinitrobenzoic acid (24DNB), 2-fluoro-5-nitrobenzoic acid (2F5NB), are characterized by single crystal x-ray diffraction, DSC, TGA and IR spectroscopy. The co-crystals adopt a range of structures, two-dimensional (2D) flat layer, corrugated layer and 3-dimensional interlocked structures. Crystals allowed us to establish a structure-mech. property relation by using a simple mech. deformation (qual.) method. The 2-dimensional flat layer crystals (CAF/24DNB, CAF/2Cl5NA and CAF/2I4NA), which have strong intralayer and weak interlayer interactions show shear deformation behavior, while those with weak intralayer interactions (CAF/4Cl3NA and CAF/4I3NA) show brittle fracture on application of a mech. stress. The structures with corrugated layers (CAF/2F5NA) or 3-dimensional interlocked packing (CAF/NA, CAF/2F5NB and CAF/4F3NA) also show brittle behavior. The authors also show the need for a wide initial search, targeting even the least expected synthons, to improve the efficiency of co-crystal screening.

CrystEngComm published new progress about Brittle fracture. 105752-04-3 belongs to class iodides-buliding-blocks, name is 4-Iodo-3-nitroaniline, and the molecular formula is C6H5IN2O2, Recommanded Product: 4-Iodo-3-nitroaniline.

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Ansari, Nurul N. published the artcileChemoselectivity in the Kosugi-Migita-Stille coupling of bromophenyl triflates and bromo-nitrophenyl triflates with (ethenyl)tributyltin, Quality Control of 21784-73-6, the main research area is bromophenyl triflate bromonitrophenyl triflate ethenyl tributyltin Stille coupling chemoselective.

Kosugi-Migita-Stille cross coupling reactions of (ethenyl)tributyltin with all isomeric permutations of bromophenyl triflate and bromo-nitrophenyl triflate were examined in order to determine the chemoselectivity of carbon-bromine vs. carbon-triflate bond coupling under different reaction conditions. In general, highly selective carbon-bromine bond cross couplings were observed for example bis(triphenylphosphine)palladium dichloride (2 mol %) in 1,4-dioxane at reflux. In contrast, reactions using the same pre-catalyst but in the presence of a three-fold excess of lithium chloride in N,N-dimethylformamide at ambient temperature were in most cases selective for coupling at the carbon-triflate bond. Overall, isolated yields and the selectivity for carbon-bromine bond coupling were significantly higher compared to carbon-triflate bond coupling.

Tetrahedron published new progress about Chemoselectivity. 21784-73-6 belongs to class iodides-buliding-blocks, name is 4-Iodo-2-nitrophenol, and the molecular formula is C6H4INO3, Quality Control of 21784-73-6.

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Wang, Cailan published the artcileMacrocyclic factor XIa inhibitors, Recommanded Product: 4-Iodo-3-nitroaniline, the main research area is macrocyclic phenylimidazole preparation factor XIa inhibitor anticoagulant thromboplastin; Activated partial thromboplastin time; FXIa; Factor XIa inhibitors; Thrombosis; aPTT.

A series of macrocyclic factor XIa (FXIa) inhibitors was designed based on an anal. of the crystal structures of the acyclic phenylimidazole compounds Further optimization using structure-based design led to inhibitors with pM affinity for FXIa, excellent selectivity against a panel of relevant serine proteases, and good potency in the activated partial thromboplastin time (aPTT) clotting assay.

Bioorganic & Medicinal Chemistry Letters published new progress about Anticoagulants. 105752-04-3 belongs to class iodides-buliding-blocks, name is 4-Iodo-3-nitroaniline, and the molecular formula is C6H5IN2O2, Recommanded Product: 4-Iodo-3-nitroaniline.

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com