Month: December 2022

Shanazarov, K. S. published the artcilePreparation of esters of pelvirinic acid [3,5-diiodo-4-oxo-1(4H)-pyridineacetic acid], Application In Synthesis of 101-29-1, the publication is Khimiko-Farmatsevticheskii Zhurnal (1968), 2(4), 40-2, database is CAplus.

Esterification of 3,5-diiodo-4-oxo-1(4H)-pyridineacetic acid (I) was accomplished in the presence of KU 2 catalyst. The following esters were prepared (% yield and m.p. given): Pr, 94.8, 188-9°; iso-Pr, 91.2, 214-15°; and Bu, 87, 194°.

Khimiko-Farmatsevticheskii Zhurnal 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 C14H20BNO4, Application In Synthesis of 101-29-1.

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

Poyac, Ludivine published the artcileSynthesis, Characterization, and Encapsulation Properties of Rigid and Flexible Porphyrin Cages Assembled from N-Heterocyclic Carbene-Metal Bonds, Safety of 1-Iodohexane, the publication is Inorganic Chemistry (2021), 60(24), 19009-19021, database is CAplus and MEDLINE.

Four porphyrins equipped with imidazolium rings on the para positions of their meso aryl groups were prepared and used as tetrakis(N-heterocyclic carbene) (NHC) precursors for the synthesis of porphyrin cages assembled from eight NHC-M bonds (M = Ag⁺ or Au⁺). The conformation of the obtained porphyrin cages in solution and their encapsulation properties strongly depend on the structure of the spacer -(CH₂)_n– (n = 0 or 1) between meso aryl groups and peripheral NHC ligands. In the absence of methylene groups (n = 0), porphyrin cages are rather rigid and the short porphyrin-porphyrin distance prevents the encapsulation of guest mols. like 1,4-diazabicyclo[2.2.2]octane (DABCO). By contrast, the presence of methylene functions (n = 1) between meso aryl groups and peripheral NHCs offers addnl. flexibility to the system, allowing the inner space between the two porphyrins to expand enough to encapsulate guest mols. like water mols. or DABCO. The peripheral NHC-wingtip groups also play a significant role in the encapsulation properties of the porphyrin cages.

Inorganic Chemistry published new progress about 638-45-9. 638-45-9 belongs to iodides-buliding-blocks, auxiliary class Iodide,Aliphatic hydrocarbon chain, name is 1-Iodohexane, and the molecular formula is C6H13I, Safety of 1-Iodohexane.

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

Hassel, O. published the artcileStructure of the 1:1 compound pyridine-iodomonochloride, Formula: C5H5ClIN, the publication is Acta Chemica Scandinavica (1956), 696-8, database is CAplus.

cf. C.A. 48, 12115f; 50, 12592f. Pyridine-iodomonochloride, yellow monoclinic needles, m. 132°, space group P2₁/c, has parameters: a 4.25, b 12.29, c 14.07 A., β 94.4°, and bond distances I-Cl 2.51, N-Cl 2.26 A. Experiments show that the I, Cl, and N atoms are at least very nearly on a straight line, and suggest that the C atom opposite the N atom is also on this line, but do not appear to strengthen the suggestion that the “outer” halogen atom attains a strong neg. charge. Previous structure studies of ether-halogen addition compounds are compared with these on N compounds The strong interaction between the O or N atom and the nearest halogen atom is evident from the short separation between these atoms, this effect being greatest in the case of N. It is probable that electrons associated with the atoms forming the O-halogen or N-halogen bond are partially promoted to d orbitals.

Acta Chemica Scandinavica 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, Formula: C5H5ClIN.

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

Mikitenko, E. K. published the artcileCyclazines and their analogs. 1. Thiazolopyrimidopyrimidines, Recommanded Product: 1-Ethyl-2-methylquinolin-1-ium iodide, the publication is Khimiya Geterotsiklicheskikh Soedinenii (1992), 692-7, database is CAplus.

3-Aminothiazolo[3,2-a] pyrimidinium salts (I; R = H, OMe) were prepared in 47-71% yield by treating 6-substituted 2-mercaptopyrimidines with Ph α-cyanobenzylbenzosulfonate, α-bromopropionitrile, or Et bromocyanoacetate and heating. Vilsmeier reaction (DMF, POCl₃) of the pyrimidinium salts led to Me formylation in the 5 position and to formation of a new heterocyclic system (thiazolopyrimidopyrimidine). The formyl-substituted thiazolopyrimidopyrimidines were separated as crystalline dark-blue substances having in addition to intense UV absorption bands a less intense, broad absorption band at ∼600 nm with well expressed vibrational structure. The thiazolopyrimidopyrimidines were treated with N-containing heterocyclic quaternary salts or nucleophilic agents (malonodinitrile) to give polymethine dyes.

Khimiya Geterotsiklicheskikh Soedinenii 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, Recommanded Product: 1-Ethyl-2-methylquinolin-1-ium iodide.

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

Cisneros, Jose A. published the artcileA Fluorescence Polarization Assay for Binding to Macrophage Migration Inhibitory Factor and Crystal Structures for Complexes of Two Potent Inhibitors, Computed Properties of 41270-96-6, the publication is Journal of the American Chemical Society (2016), 138(27), 8630-8638, database is CAplus and MEDLINE.

Human macrophage migration inhibitory factor (MIF) is both a keto-enol tautomerase and a cytokine associated with numerous inflammatory diseases and cancer. Consistent with observed correlations between inhibition of the enzymic and biol. activities, discovery of MIF inhibitors has focused on monitoring the tautomerase activity using L-dopachrome Me ester or 4-hydroxyphenyl pyruvic acid as substrates. The accuracy of these assays is compromised by several issues including substrate instability, spectral interference, and short linear periods for product formation. In this work, we report the syntheses of fluorescently labeled MIF inhibitors and their use in the first fluorescence polarization-based assay to measure the direct binding of inhibitors to the active site. The assay allows the accurate and efficient identification of competitive, noncompetitive, and covalent inhibitors of MIF in a manner that can be scaled for high-throughput screening. The results for 22 compounds show that the most potent MIF inhibitors bind with K_d values of ca. 50 nM; two are from our laboratory, and the other is a compound from the patent literature. X-ray crystal structures for two of the most potent compounds bound to MIF are also reported here. Striking combinations of protein-ligand hydrogen bonding, aryl-aryl, and cation-π interactions are responsible for the high affinities. A new chem. series was then designed using this knowledge to yield two more strong MIF inhibitors/binders.

Journal of the American Chemical Society published new progress about 41270-96-6. 41270-96-6 belongs to iodides-buliding-blocks, auxiliary class Pyrimidine,Iodide,Benzene,Immunology/Inflammation,MIF, name is 4-Iodo-6-phenylpyrimidine, and the molecular formula is C10H7IN2, Computed Properties of 41270-96-6.

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

Gleede, Tassilo published the artcileInvestigation of S_N2 [¹¹C]cyanation for base-sensitive substrates: an improved radiosynthesis of L-[5-¹¹C]-glutamine, Computed Properties of 161370-66-7, the publication is Amino Acids (2015), 47(3), 525-533, database is CAplus and MEDLINE.

Carbon-11 (β⁺ emitter, t_1/2 = 20.4 min) radiolabeled L-glutamine is a potentially useful mol. imaging agent that can be utilized with positron emission tomog. for both human oncol. diagnosis and plant imaging research. Based upon a previously reported [¹¹C]cyanide end-capping labeling method, a systematic investigation of nucleophilic cyanation reactions and acidic hydrolysis reaction parameters, including base, metal ion source, phase transfer catalyst, solvent, reaction temperature and reaction time, was conducted. The result was a milder, more reliable, two-step method which provides L-[5-¹¹C]-glutamine with a radiochem. yield of 63.8 ± 8.7% (range from 51 to 74%, n = 10) with >90% radiochem. purity and >90% enantiomeric purity. The total synthesis time was 40-50 min from the end of bombardment. In addition, an Fmoc derivatization method was developed to measure the specific activity of this radiotracer.

Amino Acids published new progress about 161370-66-7. 161370-66-7 belongs to iodides-buliding-blocks, auxiliary class Chiral,Iodide,Amine,Aliphatic hydrocarbon chain,Ester,Amide, name is (S)-tert-Butyl 2-((tert-butoxycarbonyl)amino)-4-iodobutanoate, and the molecular formula is C13H24INO4, Computed Properties of 161370-66-7.

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

Mannancherry, Rajesh published the artcileMolecular dynamic staircases: all-carbon axial chiral “Geländer” structures, Name: Dimethyl 2-iodoterephthalate, the publication is Chemical Science (2018), 9(26), 5758-5766, database is CAplus and MEDLINE.

Herein, the syntheses of two tightly packed all-carbon “Geländer” mols. with axial chirality are described. Motivated by our previous results, we further reduced the bridge length by excluding the heteroatoms. The absolute configuration was determined by comparison of the measured and calculated CD (CD) spectra and the thermodn. stability was determined by dynamic high-performance liquid chromatog. (HPLC) and CD anal. The cyclophanes were fully characterized by CD measurements, X-ray diffraction (XRD) anal., NMR, UV-Vis and high resolution mass spectrometry (HRMS). Our novel all-carbon macrocycle is the most stable Geländer system reported so far.

Chemical Science published new progress about 165534-79-2. 165534-79-2 belongs to iodides-buliding-blocks, auxiliary class Iodide,Benzene,Ester, name is Dimethyl 2-iodoterephthalate, and the molecular formula is C10H9IO4, Name: Dimethyl 2-iodoterephthalate.

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

Stewart, Georgina M. published the artcileSynthesis of substituted 9-oxo-9,10-dihydroacridine-4-carboxylic acids. I. Factors affecting the direction of ring closure of substituted N-(2-carboxyphenylamino)benzoic acids, Quality Control of 145343-76-6, the publication is Australian Journal of Chemistry (1984), 37(9), 1939-50, database is CAplus.

The cyclodehydration of (2-carboxyphenylamino)benzoic acids I (R = NO₂, CO₂H, Cl, Br, etc.) by H₂SO₄, POCl₃, or by Et polyphosphate to give mixtures of dihydroacridinecarboxylic acids II and III depended on the electronic and steric effects of R. Judicious choice of substituent and cyclizing reagent gave a large excess of 1 isomer.

Australian Journal of Chemistry published new progress about 145343-76-6. 145343-76-6 belongs to iodides-buliding-blocks, auxiliary class Chloride,Iodide,Carboxylic acid,Benzene, name is 2-Chloro-4-iodobenzoic acid, and the molecular formula is C22H12F6O6S2, Quality Control of 145343-76-6.

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

Bousrez, Guillaume published the artcileReady Access to Anhydrous Anionic Lanthanide Acetates by Using Imidazolium Acetate Ionic Liquids as the Reaction Medium, COA of Formula: C6H13I, the publication is Chemistry – A European Journal (2021), 27(52), 13181-13189, database is CAplus and MEDLINE.

Access to lanthanide acetate coordination compounds is challenged by the tendency of lanthanides to coordinate water and the plethora of acetate coordination modes. A straightforward, reproducible synthetic procedure by treating lanthanide chloride hydrates with defined ratios of the ionic liquid (IL) 1-ethyl-3-methylimidazolium acetate ([C₂mim][OAc]) has been developed. This reaction pathway leads to two isostructural crystalline anhydrous coordination complexes, the polymeric [C₂mim]_n[{Ln₂(OAc)₇}_n] and the dimeric [C₂mim]₂[Ln₂(OAc)₈], based on the ion size and the ratio of IL used. A reaction with an IL : Ln-salt ratio of 5 : 1, where Ln = Nd, Sm, and Gd, led exclusively to the polymer, while for the heaviest lanthanides (Dy-Lu) the dimer was observed Reaction with Eu and Tb resulted in a mixture of both polymeric and dimeric forms. When the amount of IL and/or the size of the cation was increased, the reaction led to only the dimeric compound for all the lanthanide series. Crystallog. analyses of the resulting salts revealed three different types of metal-acetate coordination modes where η²μκ² is the most represented in both structure types.

Chemistry – A European Journal published new progress about 638-45-9. 638-45-9 belongs to iodides-buliding-blocks, auxiliary class Iodide,Aliphatic hydrocarbon chain, name is 1-Iodohexane, and the molecular formula is C6H13I, COA of Formula: C6H13I.

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

Salvador, Maria A. published the artcileDelocalized cationic azo dyes derived from 2-aminoselenazole-5-carbaldehyde, Formula: C12H14IN, the publication is ARKIVOC (Gainesville, FL, United States) (2008), 90-95, database is CAplus.

Several delocalized cationic azo dyes incorporating a selenazole ring were prepared by Knoevenagel condensation of an intermediate azo compound bearing a 5-formylselenazole group with methylene bases derived from indolenine, benzothiazole, benzoselenazole, and quinoline. All dyes display a strong absorption at around 700 nm, bathochromically shifted relative to their thiazole analogs, and show a neg. solvatochromic behavior.

ARKIVOC (Gainesville, FL, United States) 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