Category: 2100-25-6

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

Sanquer, M. published the artcileElastic constants in molecular crystals: experiments and intermolecular potentials, COA of Formula: C10H13I, the main research area is elastic constant mol crystal; durene elasticity crystal; dibenzyl elasticity crystal; chlorobenzophenone elasticity crystal.

Elastic constants were measured for dibenzyl, durene, and iododurene and compared to the computed constants obtained from atom-atom potentials applied to nonbonded atom pairs. Agreement is found for dibenzyl and for the lower and higher phases of p-dichlorobenzophenone whereas computed constants for disordered crystals are systematically too large indicating a coupling between sound waves and the mol. orientational motions.

Studies in Physical and Theoretical Chemistry published new progress about Elasticity. 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

Sohmiya, Hajime published the artcileSolid-state organic reactions proceeding by pulverization: oxidation and halogenation with iodosobenzene and inorganic solid-supports, Product Details of C10H13I, the main research area is solid state halogenation oxidation pulverization.

Pulverization-activation method was employed to accelerate solid-state organic reactions. Crushing and grinding of solid mixtures of hydrogen halide-treated silica gels, iodosobenzene, and organic substrates in the absence of a solvent brought about smooth and rapid reactions to give halogenated and/or oxidized products in good yields. Various sulfides were smoothly converted to sulfonyl chlorides in one step in excellent yields. The surface of silica gel activated by pulverization serves as a reaction field on which reagent mols. can effectively encounter with each other.

Tetrahedron published new progress about Halogenation. 2100-25-6 belongs to class iodides-buliding-blocks, name is 3-Iodo-1,2,4,5-tetramethylbenzene, and the molecular formula is C10H13I, Product Details of C10H13I.

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

Bovonsombat, Pakorn published the artcileRing halogenations of polyalkylbenzenes with N-halosuccinimide and acidic catalysts, Computed Properties of 2100-25-6, the main research area is ring halogenation polyalkylbenzene; benzene halo; pyrrolidinedione halo halogenation polyalkylbenzene.

1-Bromo-2,5-pyrrolidinedione (NBS) and 1-chloro-2,5-pyrrolidinedione (NCS) with catalytic quantities of p-toluenesulfonic acid have been used for ring halogenations of polyalkylbenzenes. [Hydroxy(tosyloxy)iodo]benzene was effective as a catalyst with NBS but not NCS. Competition experiments with 1-iodo-2,5-pyrrolidinedione (NIS) were run to indicate selectivities in substrates, halogen sources and catalysts. With this information a mixed halogenated compound, 2-bromo-4-iodo-1,3,5-trimethylbenzene was prepared in high yield.

Synthesis published new progress about Halogenation. 2100-25-6 belongs to class iodides-buliding-blocks, name is 3-Iodo-1,2,4,5-tetramethylbenzene, and the molecular formula is C10H13I, Computed Properties of 2100-25-6.

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

Tietze, Lutz F. published the artcileStereoselective synthesis of steroids with the Heck reaction, Product Details of C10H13I, the main research area is double Heck reaction stereoselective steroid preparation.

The authors describe a new strategy, based on the synthesis of the B-ring of the steroid structure, via a double Heck reaction between (Z)-2-(2-bromoethenyl)bromobenzene and a hexahydro-1H-indene derivative This novel Pd-catalyzed annelation provides a general and efficient access to steroidal systems.

Angewandte Chemie, International Edition in English published new progress about Heck reaction. 2100-25-6 belongs to class iodides-buliding-blocks, name is 3-Iodo-1,2,4,5-tetramethylbenzene, and the molecular formula is C10H13I, Product Details of C10H13I.

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

Galli, Carlo published the artcileStudies of substrate selectivity in aromatic iodination and other substitution reactions reinforce previous conclusions about the nature of the mechanism of electrophilic aromatic substitutions, Application of 3-Iodo-1,2,4,5-tetramethylbenzene, the main research area is substitution electrophilic aromatic mechanism substrate selectivity; iodination aromatic mechanism substrate selectivity; bromination aromatic mechanism substrate selectivity; acetylation aromatic mechanism substrate selectivity; mercuration aromatic mechanism substrate selectivity; thallation aromatic mechanism substrate selectivity; nitration aromatic mechanism substrate selectivity.

The authors have investigated substrate selectivity as a probe to distinguish between electron-transfer (ET) and conventional polar mechanisms of electrophilic aromatic substitution. Selectivity toward mesitylene and durene, in competition experiments, has been determined for iodination, bromination, acetylation, mercuration and thallation reactions under the same exptl. conditions. In all cases mesitylene, i.e., the substrate with the higher σ-basicity, was more reactive than durene; a similar behavior was shared by two other pairs of substrates, namely, mesitylene/naphthalene and m-C6H4(OMe)2/p-C6H4(OMe)2, where again the more reactive substrate within each pair was that with the higher σ-basicity. These findings suggest that the structure of the transition state of the above reactions resembles that of the σ-complex, and would therefore endorse the conventional polar mechanism of electrophilic aromatic substitution. Only for the nitration reactions were the exptl. results too ambiguous to allow a definite mechanistic conclusion to be reached.

Journal of the Chemical Society, Perkin Transactions 7: Physical Organic Chemistry published new progress about Acetoxylation. 2100-25-6 belongs to class iodides-buliding-blocks, name is 3-Iodo-1,2,4,5-tetramethylbenzene, and the molecular formula is C10H13I, Application of 3-Iodo-1,2,4,5-tetramethylbenzene.

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

Lindberg, James G. published the artcileQuantitative estimation of steric effects. III. Substituent constants and steric contributions to chemical shifts of methyl group protons in ring iodinated methylbenzenes, Computed Properties of 2100-25-6, the main research area is methyliodobenzene NMR substituent constant; steric effect methyliodobenzene NMR; iodomethylbenzene steric effect NMR.

PMR spectra were systematically analyzed for 27 methylbenzenes and corresponding ring iodinated derivatives based on toluene, o-, m-, and p-xylenes, mesitylene, durene, pentamethylbenzene, and hexamethylbenzene. Typical changes in the chemical shift of methyl group protons attributable to the presence of ortho, meta, and para iodine atoms and methyl groups were calculated. Unusually large low field shifts occurred in sterically crowded molecules. In ring periodinated compounds, PMR signals of methyl group protons occurred at lower fields up to 0.94 ppm relative to a predicted position, one of the largest steric shifts yet reported. A table is presented summarizing the generally useful substituent constant data obtained from examination of 59 methylbenzenes and ring halogenated derivatives

Journal of Magnetic Resonance (1969-1992) published new progress about Steric effects. 2100-25-6 belongs to class iodides-buliding-blocks, name is 3-Iodo-1,2,4,5-tetramethylbenzene, and the molecular formula is C10H13I, Computed Properties of 2100-25-6.

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

Hamdouni, Noudjoud published the artcileIododurene, Recommanded Product: 3-Iodo-1,2,4,5-tetramethylbenzene, the main research area is iododurene crystal mol structure.

The title compound (systematic name: 1-iodo-2,3,5,6-tetramethylbenzene), C10H13I, crystallizes in the chiral space group P212121. The I atom is displaced by 0.1003(5) Å from the mean plane of the ten C atoms [maximum deviation = 0.018(6) Å]. In the crystal, there are no significant intermol. interactions present.

Acta Crystallographica, Section E: Structure Reports Online published new progress about Crystal structure. 2100-25-6 belongs to class iodides-buliding-blocks, name is 3-Iodo-1,2,4,5-tetramethylbenzene, and the molecular formula is C10H13I, Recommanded Product: 3-Iodo-1,2,4,5-tetramethylbenzene.

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

Ershad Halim, Md. published the artcileSynthesis of bromo- and iodo-substituted pyromellitic diimide-based [2+2]- and [3+3]macrocycles, and their absorption spectra and electrochemical and inclusion properties, Computed Properties of 2100-25-6, the main research area is pyromellitic diimide macrocycle absorption spectra electrochem inclusion.

New pyromellitic diimide-based tetrabromo[2+2]macrocycle ([2+2]MC) 2, tribromo- and hexabromo[3+3]MCs 3a and 3b, and triiodo[3+3]MC 3c were synthesized as structural units of covalently bound nanotubes, and their absorption spectra and redox properties, and inclusion phenomena of the [2+2]MC 2 were reported. Tetrabromo[2+2]MC 2 forms a 1:1 inclusion complex with toluene, whose structure was revealed by x-ray structural anal.

Tetrahedron Letters published new progress about Absorption spectra. 2100-25-6 belongs to class iodides-buliding-blocks, name is 3-Iodo-1,2,4,5-tetramethylbenzene, and the molecular formula is C10H13I, Computed Properties of 2100-25-6.

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