Author: Jessica.F

Bowmaker, Graham A. published the artcileVibrational spectra of adducts of iodine monochloride with some pyridine bases, Safety of Pyridine Iodochloride complex, the publication is Australian Journal of Chemistry (1980), 33(8), 1743-51, database is CAplus.

A series of mol. adducts, L-ICl, where L = pyridine or a pyridine derivative, were prepared and the solid state spectra examined by Raman and far-IR spectroscopy. Assignments of the modes ν(I-Cl) 240-300 cm^-1 and ν(N-I) 90-180 cm^-1 and force constant calculations in a simple 3-center model yield information on structure and bonding related to the nature of the pyridine donor. Several ionic products containing the ICl₂^– ion were encountered.

Australian Journal of Chemistry 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, Safety of Pyridine Iodochloride complex.

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

Koike, Takeshi published the artcileTotal synthesis of racemic ligularone and isoligularone, Computed Properties of 31253-08-4, the publication is Chemical & Pharmaceutical Bulletin (1999), 47(6), 897-899, database is CAplus.

Racemic ligularone (I) and isoligularone (II) were synthesized from the cis-4aβ,5,6,7,8,8a-hexahydro-8β,8aβ-dimethylnaphthalene-1,3(2H,4H)-dione (III) by furannulation reaction with diethyl(prop-2-ynyl)sulfonium bromide, prepared from di-Et sulfide and propargyl bromide.

Chemical & Pharmaceutical Bulletin 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, Computed Properties of 31253-08-4.

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

Hibe, Yuta published the artcileOn spin-lattice relaxation of nuclear quadrupole resonance in polycrystalline solids, SDS of cas: 6443-90-9, the publication is Chemical Physics Letters (2022), 139379, database is CAplus.

The anal. of spin-lattice relaxation in NQR (NQR) of spin-(5/2) reported by Okubo and Igarashi (Z. Naturforsch. A. 56 (2001) 777) is extended to take account of the distribution of the initial non-equilibrium populations created by a resonant radio-frequency pulse in powder. The proposed theory is applicable to axially sym. elec. field gradient tensor and is examined for spin-lattice relaxation of ¹²⁷I NQR in polycrystalline pyridine iodine monochloride measured at 469 MHz at 77 K.

Chemical Physics Letters 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

Mizota, Isao published the artcileTandem N,N-Dialkylation Reaction of N-Trimethylsilyl α-Iminoesters Utilizing an Umpolung Reaction and Characteristics of the Silyl Substituent: Synthesis of Pyrrolidine, Piperidine, and Iminodiacetate, Quality Control of 31253-08-4, the publication is Organic Letters (2019), 21(8), 2663-2667, database is CAplus and MEDLINE.

Umpolung reactions of N-trimethylsilyl α-iminoester with organometallics gave directly N-alkylaminoesters in high yields without the need for removing a protecting group at the nitrogen atom. Efficient syntheses of pyrrolidines, piperidines, and iminodiacetate derivatives were also developed via tandem N,N- or N,C-dialkylation reactions utilizing characteristics of the silyl substituent. Furthermore, under the influence of silica gel, the addition of an enolate to the imino nitrogen proceeded to give an iminodiacetate derivative

Organic Letters 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, Quality Control of 31253-08-4.

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

Bodroux, F. published the artcileTransformation of Esters of Aliphatic α-Brom Acids into the Corresponding Iodo Compounds, Synthetic Route of 31253-08-4, the publication is Bulletin de la Societe Chimique de France (1908), 909-11, database is CAplus.

By means of magnesium iodide in ethereal solution, ethyl bromacetate is converted into ethyl iodoacetate, b₂₅ 85-6°, d₂₄=1.702. Ethyl a-iodopropionate, C₅H₉O₂I, liquid, slightly colored, irritating odor, b₃₈ 85°, b₇₆₅ 181-3° with partial decomposition, d₁₇=1.662. Ethyl a-iodobutyrate, C₆H₁₁O₂I, colorless liquid, odor like pippin apples, b. 195-8° with partial decomposition, d₁₇=1.570.

Bulletin de la Societe Chimique de France 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, Synthetic Route of 31253-08-4.

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

Bodroux, F. published the artcileTransformation of Esters of α-Bromaliphatic Acids into the Corresponding α-Iodine Derivatives, Safety of Ethyl 2-Iodopropionate, the publication is Compt. rend. (1907), 1216-17, database is CAplus.

Ethyl α-chloracetate reacts with magnesium iodide giving ethyl iodacetate (Ibid, 140, 1597). The authors find that the α-brom substituted esters react in a smooth manner with magnesium iodide in ether giving the iodine derivatives. Experimental: Ethyl iodacetate, ICH₂.CO₂C₂H₄. b₂₄ 85-86°; d₂₄ 1.762. Ethyl α-iodpropionate, CH₂.CHI.CO₂C₂H₄, b₂₄ 85°, d₁₇ 1.662. Ethyl α-iodbutyrate, C₂H₅CHI.CO₂C₂H₄, b₂₁ 100-101°; d₁₇ 1.570. The iodine-substituted esters are unstable and decompose under influence of light and heat with liberation of iodine. They volatilize at ordinary temperature

Compt. rend. 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, Safety of Ethyl 2-Iodopropionate.

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

Bojarska-Dahlig, Halina published the artcileFeasibility of synthesizing 3,5-diiodo-4-pyridoxyacetic acid, the isomer of 3,5-diiodo-4-pyridone-N-acetic acid, Quality Control of 101-29-1, the publication is Acta Poloniae Pharmaceutica (1957), 457-8, database is CAplus.

The Ag salt of 3,5-diiodo-4-hydroxypyridine and ClCH₂CO₂Et in xylene or C₅H₅N give Et 3,5-diiodo-4-pyridone-N-acetate (I), m. 178-9°. The O-substituted isomer is not formed. The identity of I was established by determination of the mixed m.p. of I and of the free acid from I (m. 241-2°) with pure compounds prepared by a different method.

Acta Poloniae Pharmaceutica 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, Quality Control of 101-29-1.

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

Mostad, Asbj published the artcilePyridine-iodomonochloride. Charge transfer complex studied by ESCA [electron spectroscopy for chemical analysis], COA of Formula: C5H5ClIN, the publication is Chemical Physics Letters (1973), 23(2), 157-9, database is CAplus.

The charge transfer complex pyridine-ICl and its dissociation components were studied at equilibrium in the gas phase by means of ESCA. At. core energy shifts in the complex relative to its components are: N 1s: +0.9 eV, I 3d: -0.8 eV, Cl 2p: <0.3 eV. If the potential model is used, these shifts suggest a transfer of 0.1 electrons from the N to the I atom in the complex.

Chemical Physics Letters 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, COA of Formula: C5H5ClIN.

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

dos Santos Filho, Jose Mauricio published the artcileStereoselective, solvent free, highly efficient synthesis of aldo- and keto-N-acylhydrazones applying grindstone chemistry, Name: 4-Iodobenzohydrazide, the publication is Green Chemistry (2017), 19(9), 2212-2224, database is CAplus.

A mild and efficient synthesis of N-acylhydrazones, e.g., I has been developed by applying a simple grindstone procedure leading to a library of 51 examples exhibiting a broad variety of structural features, 21 of them described for the first time in this paper. This methodol. works without any organic solvent under the catalysis of acetic acid at room temperature, promotes the formation of essentially pure crude products, and avoids tedious work-up and the use of harmful solvents, as well as energy consumption. In addition, it leads to the stereoselective formation of N-acylhydrazones, as supported by NMR anal.

Green Chemistry 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, Name: 4-Iodobenzohydrazide.

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

McBee, E. T. published the artcileSome dihalo(trifluoromethyl)benzenes, Application of 5-Bromo-2-iodobenzotrifluoride, the publication is Journal of the American Chemical Society (1951), 3932-4, database is CAplus.

cf. C.A. 44, 10671a; 45, 5638h. o-BrC₆H₄CF₃ (I) (75 g.) and 37 cc. concentrated H₂SO₄ at 15° treated dropwise with 24 cc. concentrated H₂SO₄ and 15 cc. 15% fuming HNO₃ (the temperature kept below 25°), the mixture stirred 1.5 hrs., poured on ice, the organic layer in Et₂O washed with dilute Na₂CO₃ and water, the Et₂O evaporated, and the oil distilled yielded 18 g. I and 67 g. 2-bromo-5-nitro-1-(trifluoromethyl)benzene (II), b_2.5-3 87-8°, large, white crystals from aqueous EtOH, m. 46-8°. II on hydrolysis yielded 2-bromo-5-nitrobenzoic acid, white needles, m. 181-2°; anilide, yellow needles, m. 168-9°. II (19.6 g.) in 40 cc. EtOH added to 45 g. SnCl₂.H₂O and 35 cc. concentrated HCl in 80 cc. EtOH at 40° (the temperature kept at 40-50°), the mixture let cool to room temperature, poured into excess concentrated NaOH, the product isolated by steam distillation, the layers of the distillate extracted with Et₂O, and the combined extracts evaporated in vacuo yielded 17 g. 4-bromo-3-(trifluoromethyl)aniline (III), large, white prisms from petr. ether or aqueous EtOH, m. 55-6°. Br (115 g.) in 100 cc. AcOH added dropwise to 140 g. m-F₃CC₆H₄NHAc, 400 cc. AcOH, and 300 cc. water at 60° during 3 hrs., and the mixture poured on ice and extracted with Et₂O yielded 165 g. crude material, 55 g. of which, refluxed with 55 g. concentrated HCl and 60 cc. EtOH, the cooled mixture treated with excess NaOH, and the organic phase extracted with Et₂O yielded 22 g. m-F₃CC₆H₄NH₂, b_7.5 70-1°, and 6 g. III [di-Ac derivative, m. 112-13.5° (from aqueous EtOH)]. III.HBr (from 4.46 g. III and 9 cc. 48% HBr in 20 cc. water cooled to 0°) treated with 10 g. ice, then 1.5 g. NaNO₂ in 10 cc. water in 1 portion, the mixture stirred 1 hr. at 0°, a small amount of Cu added, and the mixture slowly warmed to 60° and steam-distilled yielded 4.6 g. 2,5-dibromo-1-(trifluoromethyl)benzene (IV), m. 49-50° (from aqueous EtOH) (extremely volatile). III (9.3 g.), 9.6 cc. concentrated H₂SO₄, and 43 cc. water cooled to 0° (III.H₂SO₄ precipitated), 2.95 g. NaNO₂ in 20 cc. water added during 1 hr. (temperature at 0-2°), the mixture stirred several min., a saturated solution of 9.3 g. KI containing a trace of Cu bronze added, the mixture let warm to room temperature, stirred 1 hr., refluxed 1 hr., steam-distilled, and the distillate decolorized with bisulfite and cooled yielded 10.5 g. 2-bromo-5-iodo-1-(trifluoromethyl)benzene, white needles from water, m. 78-80°. m-BrC₆H₄CF₃ (120 g.) nitrated by the method of Finger and Reed (C.A. 39, 504.9) gave 127 g. oil, b₅ 99-100°, n_D²⁰ 1.5202, which on chilling to 0° yielded 55 g. 5-bromo-2-nitro-1-(trifluoromethyl)benzene (V), faintly yellow crystals from petr. ether, m. 40-44°. V reduced with SnCl₂ yielded 84% 4-bromo-2-(trifluoromethyl)aniline (VI), b₁ 60.7-62°, n_D²⁰ 1.5327, converted in 51% yield by a Gattermann reaction similar to that above, into 2,5-Br₂C₆H₃CF₃ and into 41% 5-bromo-2-iodo-1-(trifluoromethyl)benzene (VII), m. 77-8° (from aqueous EtOH). The Grignard reagent from 35 g. VII treated with CO₂ yielded 15.6 g. 4-bromo-2-(trifluoromethyl)benzoic acid, m. 124-5° (from aqueous EtOH). VI (23.5 g.) with NaNO₂ yielded 14.5 g. 4,4′-dibromo-2,2′-bis(trifluoromethyl)-1,1′-diazoaminobenzene, m. 139-40° (from petr. ether).

Journal of the American Chemical Society published new progress about 364-12-5. 364-12-5 belongs to iodides-buliding-blocks, auxiliary class Trifluoromethyl,Fluoride,Bromide,Iodide,Benzene, name is 5-Bromo-2-iodobenzotrifluoride, and the molecular formula is C7H3BrF3I, Application of 5-Bromo-2-iodobenzotrifluoride.

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