Author: Jessica.F

Ikemoto, Isao published the artcileStructure of molecular compounds, Application In Synthesis of 6443-90-9, the publication is Kagaku no Ryoiki (1969), 23(5), 502-12, database is CAplus.

The Mulliken theory for charge transfer interaction between an electron acceptor and electron donor is reviewed and the overlap and orientation principle in relation to the structure of complexes is explained. Structures of the following charge transfer complexes are discussed: fo r π-σ complexes, donor (C6H6), acceptor (Br2, I2, or Cl2); for n-σ complexes, donor (1,4-dioxane, Me2CO, 1,4-dithiane, 1,4-diselenane, hexamethyl-enetetramine, trimethylamine, pyridine, or γ-picoline), acceptor (Br2, ICl, Cl2, I2); for π-π complexes, acceptor (trinitrobenzene, p-benzoquinone, chloranil, pyromellitic acid anhydrous, tetracyanobenzene, tetracyanoethylene, tetramethyluric acid, TCNQ), donor (anthracene, azulene, indole, skatole, p-iodoaniline, triaminobenzene, phenol, hydroquinone, resorcinol, p-chlorophenol, bromophenol, hexamethylbenzene, perylene, naphthalene, pyrene, N,N,N’,N’-tetramethylphenylenediamine, N,N-dimethylphenylenediamine, 1,2,4,5-tetramethylbenzene, ferrocenen, 3,4-benzopyrene, bis(8-hydroxyquinolinato)copper(II)). For the π-π complexes, the crystallographic data were tabulated.

Kagaku no Ryoiki published new progress about 6443-90-9. 6443-90-9 belongs to iodides-buliding-blocks, auxiliary class Pyridines, name is Pyridine Iodochloride complex, and the molecular formula is C5H5ClIN, Application In Synthesis of 6443-90-9.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Hofmann, Thomas published the artcileIdentification of Novel Colored Compounds Containing Pyrrole and Pyrrolinone Structures Formed by Maillard Reactions of Pentoses and Primary Amino Acids, Recommanded Product: Ethyl 2-Iodopropionate, the publication is Journal of Agricultural and Food Chemistry (1998), 46(10), 3902-3911, database is CAplus.

Heating of pentoses with alanine in a ratio of 10:1 in aqueous solution at pH 7.0 generated the yellow 2-[(2-furyl)methylidene]-4-hydroxy-5-methyl-2H-furan-3-one, being well in line with data reported in the literature. Decreasing the relative concentrations of the pentose produced further colored nitrogen-containing compounds, among which (S)-4-hydroxy-5-methyl-2-[N-(1′-carboxyethyl)pyrrolyl-2-methylidene]-2H-furan-3-one could be identified by spectroscopic and synthetic experiments On the other hand, thermal treatment of an aqueous solution of pentose and L-alanine in the presence of furan-2-carboxaldehyde led to the formation of the novel red (2R)-4-oxo-3,5-bis[(2-furyl)methylidene]tetrahydropyrrolo[1,2-c]-5(S)-(2-furyl)oxazolidine and its 5(R)-(2-furyl)oxazolidine diastereomer, which were characterized by several 1D- and 2D-NMR techniques, LC/MS, and UV-vis spectroscopy as well as by synthesis of the chromophoric substructure. In addition, the red compounds (S)-4-[(E)-1-formyl-2-(2-furyl)ethenyl]-5-(2-furyl)-2-[(E)-(2-furyl)methylidene]-2,3-dihydro-α-amino-3-oxo-1H-pyrrole-1-acetic acid and the corresponding 2-[(Z)-(2-furyl)methylidene] isomer were identified in this Maillard mixture Quant. studies on the formation of these colorants clearly demonstrates the key role of 3-deoxypentos-2-ulose as an intermediate. Reaction pathways leading to the colorants from pentoses and alanine are discussed.

Journal of Agricultural and Food Chemistry published new progress about 31253-08-4. 31253-08-4 belongs to iodides-buliding-blocks, auxiliary class Iodide,Ester, name is Ethyl 2-Iodopropionate, and the molecular formula is C5H9IO2, Recommanded Product: Ethyl 2-Iodopropionate.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Hassel, Odd published the artcileWeak intermolecular bonds in solids, Name: Pyridine Iodochloride complex, the publication is Dansk Tidsskrift for Farmaci (1962), 41-54, database is CAplus and MEDLINE.

A brief review of studies on charge-transfer bonds in complex compounds between halides (electron acceptors) and mols. containing O, N, and S, or the π-electrons of aromatic hydrocarbons, as electron donors. Electron-d. projections are given for pyridine-2I₂, pyridine-ICl, 2 acetonitrile-Br₂, CHI₃-3-quinoline, CHI₃-3S₈; the complexes 1,4-dioxane-halogen, acetone-Br₂ (1:1), hexamethylenetetramine-2Br₂, halogen-benzene, SbI₃-3S₈, oxalyl chloride (or bromide)-1,4-dioxane, and CHI₃-dithiane are discussed. Charge-transfer bonds were also found in crystals of cyanuric halides and oxalyl bromide, where an electron donor and acceptor are present.

Dansk Tidsskrift for Farmaci published new progress about 6443-90-9. 6443-90-9 belongs to iodides-buliding-blocks, auxiliary class Pyridines, name is Pyridine Iodochloride complex, and the molecular formula is C5H5ClIN, Name: Pyridine Iodochloride complex.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Hassel, O. published the artcileStructures of electron-transfer and related molecular complexes in the solid state, SDS of cas: 6443-90-9, the publication is Molecular Physics (1958), 241-6, database is CAplus.

Results obtained in recent years from x-ray investigations of solid addition compounds thought to be formed by electron transfer between mols. containing closed shells are discussed. (1) Addition compounds of ethers (or thioethers) and halogen (X): The arrangement O-X-X (or with S) as well as O-X-X-O (dioxane) is linear. In cases of combinations of 2 different halogens the stronger bond is linked to the donor atom, e.g. RO-I-Cl. This is corroborated by the altered bond distances. (2) Pyridine and ICl (1:1): The whole complex is definitely planar, the bond distances being 2.30 and 2.54 A. for N-I and I-Cl bonds, resp. (3) Hexamethylenetetramine and Br (1:2): Both N-Br-Br are linear, one N-Br and the three C-N bonds forming a nearly regular tetrahedron. Exactly the same configuration is established for Me₃N-XY. For X,Y = I the distances for I-I and N-I, resp., 2.85 and 2.27 A. are obtained; if X = I, Y = Cl, the values are 2.53 and 2.30 A. for I-Cl and N-I, resp. These results invalidate Hantsch’s concept of solid addition compounds of the type (R₃NX)⁺Y^–. The assumption that the direct reaction products obtained from amines and halogens may without risk be recrystallized from nonaqueous solvents is also fallacious. As regards the structure of charge-transfer complexes, the space group (C 2/m) is determined as the most likely one for C₆H₆.Br₂. The crystal is built of chains consisting of alternating C₆H₆ and Br₂ mols. with the Br atoms symmetrically located about the common major axis of 2 neighboring C₆H₆ rings. The Br-Br distance differs little from the one in the isolated mol. The distance Br → center of nearest ring amounts to 3.36 A. Crystal structures of addition compounds between ethers and mols. containing active H are also being studied. There exists a bond between O of Et₂O and C of CHCl₂Br, the O-H-C separation being 3.1 A. It is certain that the 1:1 compound of dioxane and H₂SO₄ is built of chains, alternating in the components, with both H atoms of the acid taking part in H-bonding with the O atoms of the ether. The O-H-O bond appears to be of normal length. The surprisingly short N-X distances indicate a bond not essentially weaker than ordinary covalent bonds, whereas the lengthening of the adjacent X-X distances in comparison to X₂ purports weakening. As both X atoms are linked to the O atoms of dioxane in the crystalline addition compounds, there is strong indication that the second X in 1:1 complexes, evidently present in liquid mixtures, is essentially not altered by bond formation between O and the first X. It is, therefore, suggested that the X, which is directly bound to the donor, forms a 10-electron system, whereas the second X retains its original octet. In this case a linear arrangement would be expected (viz. I₃^–), as is found. In regard to the probable structure of addition complexes in liquid mixtures it is believed that the amine-X₂ and ether-X₂ complexes exhibit the linear arrangement. The keto-halogen structures (1:1) in the solid state are predicted to be chains, each keto O being linked to 2 independent X atoms; in this case an angle of about 110° is to be expected between 2 linear O-X-X-O arrangements meeting in the keto O.

Molecular Physics published new progress about 6443-90-9. 6443-90-9 belongs to iodides-buliding-blocks, auxiliary class Pyridines, name is Pyridine Iodochloride complex, and the molecular formula is C5H5ClIN, SDS of cas: 6443-90-9.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Haristos, Demetrius A. published the artcileKinetic study of the oxidation of ring monosubstituted aroylhydrazines by copper(II) chloride. Application of the Hammett equation, Formula: C7H7IN2O, the publication is Chimika Chronika (1983), 12(3), 129-35, database is CAplus.

The oxidation kinetics of RC₆H₄CONHNH₂ (I; R = halo, NO₂, MeO) by CuCl₂, to give RC₆H₄CO₂H, was examined at 25-60° and pH 4.40-5.60. The reaction is first-order each in I and CuCl₂; the second order rate constant is inversely proportional to the H⁺ concentration The reaction has ρ – 0.10 with the points for I (R = m – F and p – NO₂) deviating significantly from the LFER. The substituent effect is involved mainly in the ability of I to form complexes with CuCl₂; the substituted effect on the electron transfer rate is negligible.

Chimika Chronika published new progress about 39115-95-2. 39115-95-2 belongs to iodides-buliding-blocks, auxiliary class Iodide,Hydrazine,Amine,Benzene,Hydrazide,Amide, name is 4-Iodobenzohydrazide, and the molecular formula is C7H7IN2O, Formula: C7H7IN2O.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Gomaa, Maha Mobaruk published the artcileOxonium heterocyclic quinone in the synthesis of some cyanine dyes and their antimicrobial activity, Formula: C12H14IN, the publication is European Journal of Chemistry (2014), 5(3), 463-468, 6 pp., database is CAplus.

The motivation of the synthetic process of new heterocyclic cyanine dyes is to improve the specific characterization, photosensitization behavior, and probable application in the field of biol., medical science and physics. New heterocyclic compounds having oxonium nuclei were prepared and employed for the synthesis of some new photosensitizers cyanine dyes (monomethine, trimethine and styryl cyanines). The electronic visible absorption spectra of all the synthesized cyanines were investigated in 95% ethanol to attempt and throw some light on the influence of such new heterocyclic nuclei and to compare or evaluate spectral behaviors. Antimicrobial activity of selected compounds against some bacterial strains was tested. Structural identification was carried out via elemental anal., IR and ¹H NMR.

European Journal of Chemistry published new progress about 606-55-3. 606-55-3 belongs to iodides-buliding-blocks, auxiliary class Quinoline,Salt, name is 1-Ethyl-2-methylquinolin-1-ium iodide, and the molecular formula is C12H14IN, Formula: C12H14IN.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Bojarska-Dahlig, Halina published the artcile4-Pyridone-N-acetic acid and derivatives, Recommanded Product: 2-(3,5-Diiodo-4-oxopyridin-1(4H)-yl)acetic acid, the publication is Roczniki Chemii (1955), 119-28, database is CAplus.

For pharmacol. investigations were prepared 4-pyridone-N-acetic acid (I) and some of its derivatives To 9.5 g. of 4-pyridone nitrate in 15 ml. H₂O and 8.88 g. NaOH was added 11.4 g. ClCH₂CO₂H (Ia) and the mixture refluxed 1 hr., then acidified with concentrated HCl, and kept 3 days to precipitate 7.2 g. I, m. 253-5° (from water). To 8.4 g. 3-nitro-4-pyridone (II) in 15 ml. H₂O and 11.4 g. NaOH was added 11.4 g. of Ia, the mixture refluxed 1 hr., and acidified with concentrated HCl to precipitate 8.9 g. 3-O₂N derivative (III) of I, m. 268-9°. III (4.95 g.) with 6.5 g. n-octyl alc. and 0.55 ml. H₂SO₄ in 15 ml. benzene boiled 2 hrs., 100 ml. H₂O added, the mixture neutralized with NaHCO₃, and the C₆H₆ distilled off to give 49% n-octyl ester of III, m. 135° (from 50% alc.). II (14 g.), 700 ml. 78% alc., 7 g. CaCl₂, 10 ml. H₂O, and 210 g. Zn dust refluxed 10 hrs., the mixture filtered, acidified with 10 ml. concentrated HCl, heated on a water bath until crystalline, and 20 ml. concentrated HCl added to yield 41% 3-amino-4-pyridone-2HCl (IV), m. 228-30° (from concentrated HCl). IV (4.48 g.), 20 ml. H₂O, 4.2 g. NaOH, and 2.82 g. Ia were heated 1 hr. on boiling water bath, concentrated HCl added to pH 5, and the mixture kept 10 hrs. to give 69.3% 3-H₂N derivative of I, dark colored crystals, m. 242-5° (from 50% alc.). To 7 g. II, 11.7 g. Na₂CO₃ hydrate, and 100 ml. H₂O at 50° was added dropwise 10.5 g. iodine and 10.5 g. KI in 100 ml. H₂O, the mixture heated 1 hr. at 50° and 2 hrs. 95-100°, saturated with SO₂ and kept 10 hrs. to give 58% 3-nitro-5-iodo-4-pyridone (V), yellow crystals, darken 270°, decompose 310° (from 50% alc.). To 16 g. V, 8.64 g. NaOH, and 20 ml. H₂O was added 11.4 g. Ia, the mixture heated on a water bath 1 hr., and acidified with concentrated HCl to give 87.6% 3-nitro-5-iodo-4-pyridone-N-acetic acid (VI), m. 252-4° (from H₂O); NH₄ salt (prepared in 25% NH₃), yellow needles, m. 225-8°; (HOCH₂CH₂)₂NH salt, m. 156-8° (from 90% alc.); Et ester, m. 122° (from 96% alc.); n-octyl ester, m. 105-7°. To 8.1 g. VI and 5.75 g. granulated Zn was gradually added 15 ml. concentrated HCl, the mixture heated 3 hrs. on boiling water bath, concentrated in vacuo to a sirup, 100 ml. H₂O added, and the solution saturated with H₂S, ZnS filtered off, and the filtrate concentrated on water bath to give the HCl salt (VII), m. 216-18° (from dilute HCl), of the 3-H₂N analog of VI. To 6.6 g. VII in 40 ml. 15% HCl was added with stirring during 10 min. 1.73 g. NaNO₂ in 5 ml. H₂O and the mixture kept 20 min. at 0° to give 94% N-carboxymethyl-5-iodo-4-pyridone-3-diazonium chloride, yellow crystals, m. 141-3°.

Roczniki Chemii published new progress about 101-29-1. 101-29-1 belongs to iodides-buliding-blocks, auxiliary class Pyridine,Iodide,Carboxylic acid,Ketone, name is 2-(3,5-Diiodo-4-oxopyridin-1(4H)-yl)acetic acid, and the molecular formula is C7H5I2NO3, Recommanded Product: 2-(3,5-Diiodo-4-oxopyridin-1(4H)-yl)acetic acid.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Bagrov, F. V. published the artcileCondensation of ethyl (ethoxymethylene)cyanoacetate with acyl- and diphenylphosphinylhydrazines, Related Products of iodides-buliding-blocks, the publication is Russian Journal of General Chemistry (Translation of Zhurnal Obshchei Khimii) (2000), 70(3), 422-425, database is CAplus.

Condensation of Et (ethoxymethylene)cyanoacetate with hydrazides of diphenylphosphinic acid and aliphatic and aromatic acids in EtOH involves exclusively the ethoxymethylene group and yields the corresponding Et 3-oxo-2-cyanopropanoate hydrazones. These compounds exist in the crystalline state and in solutions as the enehydrazine tautomer in which the configurational equilibrium is determined by the nature of substituent in the hydrazine moiety.

Russian Journal of General Chemistry (Translation of Zhurnal Obshchei Khimii) published new progress about 39115-95-2. 39115-95-2 belongs to iodides-buliding-blocks, auxiliary class Iodide,Hydrazine,Amine,Benzene,Hydrazide,Amide, name is 4-Iodobenzohydrazide, and the molecular formula is C7H7IN2O, Related Products of iodides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Bagrov, F. V. published the artcileReaction of ethyl ethoxymethyleneacetoacetate with hydrazine monoderivatives, Application of 4-Iodobenzohydrazide, the publication is Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii) (2000), 36(2), 191-194, database is CAplus.

The reaction of Et α-ethoxymethyleneacetoacetate with acylhydrazines affords the corresponding acylhydrazones of α-formylacetoacetic ester. The ¹H NMR and IR spectra revealed that the compounds obtained existed in ketoenamine (ketoenhydrazine) form. The condensation of 4-chlorophenyl-, 4-nitrophenyl-, 6-chloropyridazinyl- and 4-phenylphthalazinylhydrazines with the Et ethoxymethyleneacetoacetate is accompanied by cyclization into the corresponding 5-methyl-4-ethoxycarbonylpyrazoles.

Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii) published new progress about 39115-95-2. 39115-95-2 belongs to iodides-buliding-blocks, auxiliary class Iodide,Hydrazine,Amine,Benzene,Hydrazide,Amide, name is 4-Iodobenzohydrazide, and the molecular formula is C7H7IN2O, Application of 4-Iodobenzohydrazide.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Al-Zahrani, Fatimah A. M. published the artcileSynthesis, Dynamics of Solvatochromism and pH-sensory of Novel Push-π-pull Phenothiazine-quinoline Fluorophore Toward Turn-on Fluorescent and Colorimetric Test Strips, Safety of 1-Ethyl-2-methylquinolin-1-ium iodide, the publication is Fibers and Polymers (2022), 23(5), 1182-1189, database is CAplus.

Novel donor-central-π-bridge-acceptor (E)-1-ethyl-2-((10-hexyl-10H-phenothiazin-3-yl)methylene)-2,4a-dihydroquinolin-1-ium (PTZ-Q) fluorophore with remarkable solvatochromism, high fluorescence and pH-sensory properties was designed and synthesized in good yield. PTZ-Q sensor was fully characterized utilizing various spectroscopic techniques, including IR (FTIR), ¹H/¹³C NMR, and mass spectroscopic methods. UV-Vis absorption spectra of the prepared donor-acceptor PTZ-Q were explored in different solvents of varying polarities to show pos. solvatochromism related to intramol. charge transfer. Addnl., the fluorescence spectra of PTZ-Q displayed strongly solvent-dependent wavelength and band intensity. Stokes′ shifts were found to increase upon increasing the polarities of solvents up to 3984 cm^-1 for the highest polar solvents. Linear energy-solvation correlation was employed to examine solvent-dependent Stokes′ shift. Quantum yields () of PTZ-Q were determined The pH-dependent absorption and emission spectra in DMF were also explored. The UV-Vis absorption intensity was monitored at 522 nm, while the emission intensity was detected at 603 nm in DMF. The pH sensing mechanism was found to depend on proton abstraction to the PTZ-Q fluorophore to result in colorimetric and fluorescent spectral changes associated with a colorimetric shift from yellow to pink, red and purple. The synthesized PTZ-Q probe was utilized to fabricate colorimetric and fluorescent test strips with the ability to detect pH changes in aqueous media, which was verified with CIE Lab color coordinates.

Fibers and Polymers published new progress about 606-55-3. 606-55-3 belongs to iodides-buliding-blocks, auxiliary class Quinoline,Salt, name is 1-Ethyl-2-methylquinolin-1-ium iodide, and the molecular formula is C12H14IN, Safety of 1-Ethyl-2-methylquinolin-1-ium iodide.

Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com