Category: iodides-buliding-blocks

Recommanded Product: 1-Iodo-4-methylbenzeneIn 2020 ,《Asymmetric Ni-Catalyzed Radical Relayed Reductive Coupling》 appeared in Journal of the American Chemical Society. The author of the article were Wei, Xiaofeng; Shu, Wei; Garcia-Dominguez, Andres; Merino, Estibaliz; Nevado, Cristina. The article conveys some information:

Alkene dicarbofunctionalizations enable the streamlined construction of aliphatic structures and have thus been the subject of intense research efforts. Despite significant progress, catalytic asym. variants remain scarce. Inspired by the advantages of reductive cross-coupling approaches, we present here a highly efficient asym. intermol. Ni-catalyzed reductive dicarbofunctionalization of alkenes. Two distinct readily available electrophiles, namely, Csp2- and Csp3-halides, are added simultaneously across a variety of olefins (vinyl amides, vinyl boranes, vinyl phosphonates) at room temperature in a highly regio- and enantioselective manner. The reaction, devoid of sensitive organometallic reagents, takes advantage of an in situ generated chiral alkyl Ni(III)-intermediate to ensure a stereodefined outcome in the Csp3-Csp2 bond-forming reaction. An (L)-(+)-isoleucine chiral bisoxazoline ligand and the presence of coordinating sites on the alkene are key for the successful outcome in these “”asym. radical relayed reductive couplings”” (ARRRCs). Further, multiple transformations of the chiral amides obtained in this process showcase the potential of this new methodol. for the straightforward assembly of chiral building blocks such as primary and secondary amines and oxazolines, highlighting its synthetic utility. In the part of experimental materials, we found many familiar compounds, such as 1-Iodo-4-methylbenzene(cas: 624-31-7Recommanded Product: 1-Iodo-4-methylbenzene)

1-Iodo-4-methylbenzene(cas: 624-31-7) is used in wide range of medicals industrial applications as well as in pharmaceutical intermediates, polarizing films for Liquid Crystal Display (LCD) chemicals.Recommanded Product: 1-Iodo-4-methylbenzene

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

Name: 4-IodopyridineIn 2019 ,《Influence of Donor-Substituents on Triphenylamine Chromophores Bearing Pyridine Fragments》 appeared in European Journal of Organic Chemistry. The author of the article were Tydlitat, Jiri; Feckova, Michaela; le Poul, Pascal; Pytela, Oldrich; Klikar, Milan; Rodriguez-Lopez, Julian; Robin-le Guen, Francoise; Achelle, Sylvain. The article conveys some information:

Efficient synthetic routes that combine different palladium-catalyzed cross-coupling reactions were developed for the preparation of a new family of push-pull derivatives in which pyridine was used as the acceptor group and different para-substituted diphenylamines as the donor groups. All compounds showed absorption in the UV/visible region and blue-green emission with high quantum yields. Significant red shifts were observed in the absorption and fluorescence emission maxima on increasing the electron-donating ability of the substituents or on incorporating a π-conjugated linker. This finding can be explained on the basis of enhanced intramol. charge transfer (ICT). Strong emission solvatochromism confirmed the formation of an intramol. charge-separated emitting state. The HOMO-LUMO energy gaps were estimated by exptl. electrochem. measurements and the results were interpreted with the aid of DFT calculations The thermal behavior of all materials also was studied by DSC. In the experimental materials used by the author, we found 4-Iodopyridine(cas: 15854-87-2Name: 4-Iodopyridine)

4-Iodopyridine(cas: 15854-87-2) is a halogenated heterocycle that is a building block for proteomics research. 4-Iodopyridine is used as a reagent in the synthesis of indazolylamides as glucocorticoid receptor agonists.Name: 4-Iodopyridine

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

Recommanded Product: 4-IodopyridineIn 2021 ,《Multitasking with Chemical Fuel: Dissipative Formation of a Pseudorotaxane Rotor from Five Distinct Components》 appeared in Journal of the American Chemical Society. The author of the article were Ghosh, Amit; Paul, Indrajit; Schmittel, Michael. The article conveys some information:

A 3-fold completive self-sorted library of dynamic motifs was integrated into the design of the pseudorotaxane-based rotor [Zn(2·H+)(3)(4)]2+ operating at k298 = 15.4 kHz. The rotational motion in the five-component device is based on association/dissociation of the pyridyl head of the pseudorotaxane rotator arm between two zinc(II) porphyrin stations. Addition of TFA or 2-cyano-2-phenylpropanoic acid as a chem. fuel to a zinc release system and the loose rotor components 2-4 enabled the liberated zinc(II) ions and protons to act in unison, setting up the rotor through the formation of a heteroleptic zinc complex and a pseudorotaxane linkage. With chem. fuel, the dissipative system was reproducibly pulsed three times without a problem. Due to the double role of the fuel acid, two kinetically distinct processes played a role in both the out-of-equilibrium assembly and disassembly of the rotor, highlighting the complex issues in multitasking of chem. fuels. In addition to this study using 4-Iodopyridine, there are many other studies that have used 4-Iodopyridine(cas: 15854-87-2Recommanded Product: 4-Iodopyridine) was used in this study.

4-Iodopyridine(cas: 15854-87-2) is a halogenated heterocycle that is a building block for proteomics research. 4-Iodopyridine is used as a reagent in the synthesis of indazolylamides as glucocorticoid receptor agonists.Recommanded Product: 4-Iodopyridine

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

In 2022,Wang, Hepan; Zheng, Purui; Wu, Xiaoqiang; Li, Yuqiang; Xu, Tao published an article in Journal of the American Chemical Society. The title of the article was 《Modular and Facile Access to Chiral α-Aryl Phosphates via Dual Nickel- and Photoredox-Catalyzed Reductive Cross-Coupling》.Reference of 4-Iodobenzaldehyde The author mentioned the following in the article:

Chiral phosphine-containing skeletons are important motifs in bioactive natural products, pharmaceuticals, chiral catalysts, and ligands. Herein, the authors report a general and modular platform to access chiral α-aryl P compounds via a Ni/photoredox-catalyzed enantioconvergent reductive cross-coupling between α-bromophosphates and aryl iodides. This dual catalytic regime exhibited high efficiency and good functional group capacity. A wide variety of substrates bearing a diverse set of functional groups could be converted into chiral phosphates in good to excellent yields and enantioselectivities. The utility of the method was also demonstrated by the development of a new phosphine ligand and the synthesis of enzyme inhibitor derivatives The detailed mechanistic studies supported a radical chain process and revealed a unique distinction compared with traditional reductive cross-coupling. The experimental process involved the reaction of 4-Iodobenzaldehyde(cas: 15164-44-0Reference of 4-Iodobenzaldehyde)

4-Iodobenzaldehyde(cas: 15164-44-0) is used in synthesis of 4-[2-(trimethylsilyl)ethynyl]benzaldehyde, 5,15-dimesityl-10-(3-[2-(trimethylsilyl)ethynyi]phenyl}-20-(4-iodophenyl)porphyrin, and 5,15-dimesityl-10-[3,5-bis{2-[4-(N,N’-difluoroboryl-1,9-dimethyidipyrrin-5-yl)-phenyl]ethynyl}phenyl]-20-(4-iodophenyl)porphyrin.Reference of 4-Iodobenzaldehyde

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

In 2022,Li, Jia; Li, Yu-An; Wu, Ge; Zhang, Xu published an article in Frontiers in Chemistry (Lausanne, Switzerland). The title of the article was 《Metal-free aminohalogenation of quinones with alkylamines and NXS at room temperature》.Recommanded Product: 516-12-1 The author mentioned the following in the article:

A simple and practical strategy for intermol. aminohalogenation of quinone with alkyl amines and NXS was developed for preparation of halo(amino)naphthalenediones I [X = H, Cl, Br, I; R1 = Me; R2 = 2-cyanoethyl, (4-bromophenyl)methyl, phenethyl, (3S)-3-(2-methylphenoxy)-3-phenyl-propyl; R1 = R2 = (CH2)2O(CH2)2, (CH2)2CH(OH)(CH2)2, (CH2)2CH(CO2Me)(CH2)2], in which haloamines generated in situ were employed as bifunctional reagents. The reaction system was reliable, efficient and wide in substrate range, which was suitable for the two-fold aminochlorination of 1, 4-benzoquinones, large-scale reaction and late-stage modification of pharmaceuticals. The results came from multiple reactions, including the reaction of 1-Iodopyrrolidine-2,5-dione(cas: 516-12-1Recommanded Product: 516-12-1)

1-Iodopyrrolidine-2,5-dione(cas: 516-12-1) is used in the preparation of vinyl sulfones from olefins and benzenesulfinic acid. It acts as a source for I+ and involved in Hunsdiecker reactions for the conversion of cinnamic acids, and propiolic acids to the corresponding alfa-halostyrenes and 1-halo-1-alkynes respectively. Recommanded Product: 516-12-1

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

In 2022,Roemer, Max; Gillespie, Angus; Jago, David; Costa-Milan, David; Alqahtani, Jehan; Hurtado-Gallego, Juan; Sadeghi, Hatef; Lambert, Colin J.; Spackman, Peter R.; Sobolev, Alexandre N.; Skelton, Brian W.; Grosjean, Arnaud; Walkey, Mark; Kampmann, Sven; Vezzoli, Andrea; Simpson, Peter V.; Massi, Massimiliano; Planje, Inco; Rubio-Bollinger, Gabino; Agrait, Nicolas; Higgins, Simon J.; Sangtarash, Sara; Piggott, Matthew J.; Nichols, Richard J.; Koutsantonis, George A. published an article in Journal of the American Chemical Society. The title of the article was 《2,7- and 4,9-Dialkynyldihydropyrene Molecular Switches: Syntheses, Properties, and Charge Transport in Single-Molecule Junctions》.SDS of cas: 15854-87-2 The author mentioned the following in the article:

This paper described the syntheses of several functionalized dihydropyrene (DHP) mol. switches with different substitution patterns. Regioselective nucleophilic alkylation of a 5-substituted di-Me isophthalate allowed the development of a workable synthetic protocol for the preparation of 2,7-alkyne-functionalized DHPs. Synthesis of DHPs with surface-anchoring groups in the 2,7- and 4,9-positions was described. The mol. structures of several intermediates and DHPs were elucidated by X-ray single-crystal diffraction. Mol. properties and switching capabilities of both types of DHPs were assessed by light irradiation experiments, spectroelectrochem., and cyclic voltammetry. Spectroelectrochem., in combination with d. functional theory (DFT) calculations, shows reversible electrochem. switching from the DHP forms to the cyclophanediene (CPD) forms. Charge-transport behavior was assessed in single-mol. scanning tunneling microscope (STM) break junctions, combined with d. functional theory-based quantum transport calculations All DHPs with surface-contacting groups form stable mol. junctions. Experiments showed that the mol. conductance depends on the substitution pattern of the DHP motif. The conductance was found to decrease with increasing applied bias. After reading the article, we found that the author used 4-Iodopyridine(cas: 15854-87-2SDS of cas: 15854-87-2)

4-Iodopyridine(cas: 15854-87-2) belongs to pyridine. Pyridine is very deactivated towards electrophilic substitution with respect to benzene. For this reason classical formylation, using methods such as the Gattermann or Vilsmeier reactions, are not generally successful. SDS of cas: 15854-87-2

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

In 2022,Sabourin, Axel; Dufour, Jeremy; Vors, Jean-Pierre; Bernier, David; Montchamp, Jean-Luc published an article in European Journal of Organic Chemistry. The title of the article was 《Synthesis of Carbon- and Nitrogen-Substituted 5- and 6-Membered Benzophostams》.Quality Control of 4-Iodopyridine The author mentioned the following in the article:

Previously, the synthesis of the novel 6-membered and a series of P-substituted 5-membered benzophostams was accomplished. Here, the synthesis of N- and C-substituted benzophostams is presented. For N-substitution, alkylation was accomplished using the heterocycle, LiHMDS and an alkyl halide, or alternatively by copper-catalyzed cyclization of the N-alkyl phosphonamide. N-Arylation could similarly be accomplished on the preformed heterocycle or on the phosphonamide precursor via copper-catalyzed cross-coupling. Dimethylation at the benzylic position could be conducted with LiHMDS and Me iodide. However, due to the significant cost of LiHMDS, a much less expensive and more efficient alternative approach was developed relying on a palladium-catalyzed reductive Heck reaction. In the part of experimental materials, we found many familiar compounds, such as 4-Iodopyridine(cas: 15854-87-2Quality Control of 4-Iodopyridine)

4-Iodopyridine(cas: 15854-87-2) belongs to pyridine. Pyridines are often used as catalysts or reagents; particular notice has been paid recently to how pyridine coordinates to metal centers enabling a wide range of valuable reactions. Quality Control of 4-Iodopyridine

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

In 2022,Gravatt, Christopher S.; Johannes, Jeffrey W.; King, Eric R.; Ghosh, Avipsa published an article in Journal of Organic Chemistry. The title of the article was 《Photoredox-Mediated, Nickel-Catalyzed Trifluoromethylthiolation of Aryl and Heteroaryl Iodides》.Reference of 4-Iodopyridine The author mentioned the following in the article:

Herein, a method employing a bench-stable Ni(II) salt and an iridium photocatalyst that was mediated the trifluoromethylthiolation of a wide range of electronically diverse aryl and heteroaryl iodides, likely via a Ni(I)/Ni(III) catalytic cycle was reported. The reaction was broad functional group tolerance and potential for application in medicinal chem., as demonstrated by a late-stage functionalization approach to access (racemic)-Monepantel. In the experiment, the researchers used many compounds, for example, 4-Iodopyridine(cas: 15854-87-2Reference of 4-Iodopyridine)

4-Iodopyridine(cas: 15854-87-2) belongs to pyridine. In industry and in the lab, pyridine is used as a reaction solvent, particularly when its basicity is useful, and as a starting material for synthesizing some herbicides, fungicides, and antiseptics.Reference of 4-Iodopyridine

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

Wang, Xiaoshuang; Sun, Lei; Wang, Miaomiao; Maestri, Giovanni; Malacria, Max; Liu, Xiang; Wang, Yanlan; Wu, Lingang published an article in 2022. The article was titled 《C-I Selective Sonogashira and Heck Coupling Reactions Catalyzed by Aromatic Triangular Tri-palladium》, and you may find the article in European Journal of Organic Chemistry.Computed Properties of C6H4BrI The information in the text is summarized as follows:

Aromatic triangular tri-palladium cations, abbreviated as [Pd3]+, have shown interesting photoelec. properties, Lewis basic character, and excellent activities in catalytic hydrogenation. Herein, authors report the highly efficient and C-I selective Sonogashira and Heck coupling reactions catalyzed by these tri-palladium complexes. Benefiting from the moderate C-I bond association energy, these tri-palladiums presented exclusive reactivities to aryl iodides over the brominated aromatics in coupling reactions. In the Sonogashira pathway, good to excellent isolated yields (71-95%) were achieved. Gram-scale reaction reached 93% of yield with palladium loading as few as 0.06 mol %. Authors also explored the electronic and steric effects for Ph alkynes and aryl iodides including heteroaromatics like thiophene, pyridine, pyrazole, and pyrazine. Similarly, yields of 71-96% were obtained for palladium loading of 1.5 mol% through catalyzed Heck coupling of aryl iodides and alkenes. The HRMS monitoring revealed that [Pd3]+ maintained as whole entity during the catalytic process due to its robusness. In addition to this study using 1-Bromo-3-iodobenzene, there are many other studies that have used 1-Bromo-3-iodobenzene(cas: 591-18-4Computed Properties of C6H4BrI) was used in this study.

1-Bromo-3-iodobenzene(cas: 591-18-4) has been used in the preparation of 1-(3′-bromophenyl)-3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodec-1-ene and 1-(3′-bromophenyl)-3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooct-1-ene.Computed Properties of C6H4BrI Further, it is involved in the preparation of oxygen-tethered 1,6-enynes.

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

In 2022,Arora, Ramon; Rodriguez, Jose F.; Whyte, Andrew; Lautens, Mark published an article in Angewandte Chemie, International Edition. The title of the article was 《Accessing Unsymmetrically Linked Heterocycles through Stereoselective Palladium-Catalyzed Domino Cyclization》.HPLC of Formula: 63069-48-7 The author mentioned the following in the article:

A palladium-catalyzed strategy is presented to synthesize unsym. linked heterocycles within stereoselective tetrasubstituted olefins I [R 1 = C6H5, 3-ClC6H4, 3-CH3C6H4, etc.; R2 = H, 5-Me, 5-Cl, 5-CF3, 6-C(O)2Me; R3 = Me, Bn, cyclohexylmethyl, etc.; R4 = Ph, 2-thienyl, cyclohexynyl, etc.; R5 = H, 6-Cl, 5-CN, 5-F, 5-CF3]. This reaction is proposed to occur via a vinyl-PdII intermediate capable of initiating the cyclization of various alkyne-tethered nucleophiles II (R6 = H, 5-Me, 5-Cl, 5-CF3, 5-C(O)2Me) and III (R7 = H, 5-Cl, 4-CN, 4-F, 4-CF3). Products I are formed in up to 96% yield with excellent stereoselectivities using low catalyst loadings. This transformation was scalable up to 1 mmol and mechanistic studies suggest a syn-carbopalladation of the carbamoyl chloride followed by PdII-catalyzed cyclization of alkyne-tethered nucleophiles. In addition to this study using 4-Chloro-2-iodoaniline, there are many other studies that have used 4-Chloro-2-iodoaniline(cas: 63069-48-7HPLC of Formula: 63069-48-7) was used in this study.

4-Chloro-2-iodoaniline(cas: 63069-48-7) belongs to anime. Left-handed and right-handed forms (mirror-image configurations, known as optical isomers or enantiomers) are possible when all the substituents on the central nitrogen atom are different (i.e., the nitrogen is chiral). With amines, there is extremely rapid inversion in which the two configurations are interconverted.HPLC of Formula: 63069-48-7

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