Tag: 500-600

Kreyenschmidt, Friedrich; Koszinowski, Konrad published an article in 2018, the title of the article was Low-Valent Ate Complexes Formed in Cobalt-Catalyzed Cross-Coupling Reactions with 1,3-Dienes as Additives.Related Products of 83152-22-1 And the article contains the following content:

The combination of CoCl2 and 1,3-dienes is known to catalyze challenging alkyl-alkyl cross-coupling reactions between Grignard reagents and alkyl halides, but the mechanism of these valuable transformations remains speculative. Herein, electrospray-ionization mass spectrometry is used to identify and characterize the elusive intermediates of these and related reactions. The vast majority of detected species contain low-valent cobalt(I) centers and diene mols. Charge tagging, deuterium labeling, and gas-phase fragmentation experiments elucidate the likely origin of these species and show that the diene not only binds to Co as a π ligand, but also undergoes migratory insertion reactions into Co-H and Co-R bonds. The resulting species have a strong tendency to form anionic cobalt(I) ate complexes, the superior nucleophilicity of which should render them highly reactive toward electrophilic substrates and, thus, presumably is the key to the high catalytic efficiency of the system under investigation. Upon the reaction of the in situ formed cobalt(I) ate complexes with organyl halides, only the final cross-coupling product could be detected, but no cobalt(III) species. This finding implies that this reaction step proceeds in a direct manner without any intermediate or, alternatively, that it involves an intermediate with a very short lifetime. The experimental process involved the reaction of (6-Bromohexyl)triphenylphosphonium bromide(cas: 83152-22-1).Related Products of 83152-22-1

The Article related to low valet cobalt complex cross coupling reaction diene reaction, cobalt diene electrospray ionization mass spectrometry intermediate preparation, ate complexes, cobalt, cross-coupling, mass spectrometry, reactive intermediates and other aspects.Related Products of 83152-22-1

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Islam, M. Q.; Hill, W. E.; Webb, T. R. published an article in 1989, the title of the article was Synthesis and characterization of long chain unsymmetrical diphosphines.Safety of (6-Bromohexyl)triphenylphosphonium bromide And the article contains the following content:

The long-chain unsym. diphosphines, R2P(CH2)nPPh2 (R = Me, Et; n = 6, 8) have been synthesized and characterized by their 31P and 1H NMR spectra. The purity of product is strictly dependent on the reaction condition. Attempted preparation of the diphosphines with same substituents on P but a longer chain length (10 and 12 methylene bridge) was unsuccessful because of possible disubstitution in the first of the four step synthesis giving mixed products (sym. and unsym. diphosphines). The experimental process involved the reaction of (6-Bromohexyl)triphenylphosphonium bromide(cas: 83152-22-1).Safety of (6-Bromohexyl)triphenylphosphonium bromide

The Article related to diphosphine unsym long chain, dibromoalkane reaction triorganophosphine, oxidation diphosphonium dibromide unsym, bromoalkylphosphonium bromide preparation reaction triorganophosphine, quaternization triorganophosphine dibromoalkane and other aspects.Safety of (6-Bromohexyl)triphenylphosphonium bromide

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Nakayama, Kaii; Kamiya, Hidehiro; Okada, Yohei published an article in 2022, the title of the article was Radical cation Diels-Alder reactions of arylidene cycloalkanes.Name: (6-Bromohexyl)triphenylphosphonium bromide And the article contains the following content:

TiO2 photoelectrochem. and electrochem. radical cation Diels-Alder reactions of arylidene cycloalkanes are described, leading to the construction of spiro ring systems. Although the mechanism remains an open question, arylidene cyclobutanes are found to be much more effective in the reaction than other cycloalkanes. Since the reaction is completed with a substoichiometric amount of electricity, a radical cation chain pathway is likely to be involved. The experimental process involved the reaction of (6-Bromohexyl)triphenylphosphonium bromide(cas: 83152-22-1).Name: (6-Bromohexyl)triphenylphosphonium bromide

The Article related to spiro compound preparation photoelectrochem electrochem reaction, arylidene cycloalkane dimethyl butadiene diels alder reaction, diels–alder reaction, arylidene cycloalkane, radical cation, single-electron transfer, spiro ring system and other aspects.Name: (6-Bromohexyl)triphenylphosphonium bromide

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

On October 15, 2007, Ju-Nam, Yon; Allen, David W.; Gardiner, Philip H. E.; Light, Mark E.; Hursthouse, Michael B.; Bricklebank, Neil published an article.Reference of (6-Bromohexyl)triphenylphosphonium bromide The title of the article was The synthesis and characterisation of masked phosphonioalkyl selenolates: Potential ligands for the production of functionalised gold nanoparticles. And the article contained the following:

Two new masked phosphonioalkylselenolate ligands, bis(3-triphenylphosphoniopropyl) diselenide- and [6-(selenocyanato)hexyl]triphenylphosphonium selenocyanates, were prepared The mol. structure of the bis(3-triphenylphosphoniopropyl) diselenide diselenocyanate was determined by x-ray crystallog. The structure reveals an overall stoichiometry of {[Ph3P+(CH2)3Se]2(SeCN-)2·KOH}, with the bis(3-triphenylphosphoniopropylselenium) diselenocyanate units arranged in pairs around an inversion center. The K ion is disordered over several positions but its main component forms a near linear K···Se contact to one of the Se atoms in the diselenide bond. The hexyl derivative, [6-(selenocyanato)hexyl]triphenylphosphonium selenocyanate forms as a yellow oil that was characterized spectroscopically. Both phosphonioalkylselenide cations undergo reductive cleavage to form phosphonioalkylselenolate zwitterions. Attempts to prepare phosphonioalkylselenolate-functionalized Au nanoparticles in situ through the NaBH4-promoted reduction of tetrachloroaurate salts in a H2O/CH2Cl2 biphasic system gave colloidal gold. The experimental process involved the reaction of (6-Bromohexyl)triphenylphosphonium bromide(cas: 83152-22-1).Reference of (6-Bromohexyl)triphenylphosphonium bromide

The Article related to gold nanoparticle attempted stabilization phosphoniopropyl diselenide selenocyanatohexylphosphonium selenocyanate, phosphoniopropyl diselenide selenocyanate preparation structure reduction attempted nanoparticle stabilization, selenocyanatohexylphosphonium selenocyanate preparation attempted gold nanoparticle stabilization and other aspects.Reference of (6-Bromohexyl)triphenylphosphonium bromide

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

On February 7, 2018, Neuzil, Jiri; Werner, Lukas; Stursa, Jan published a patent.Application of 83152-22-1 The title of the patent was Triphenylphosphonium biguanide analogs, the method of their preparation and their use as a medication. And the patent contained the following:

Biguanides R5R4NC(:NR6)NR3C(:NR7)NR1R2·HX (1, R1-R7 = H, C1-6 alkyl, aralkyl, or substituent ZPPh3+Y-, where Z = linear C2-C20 alkylene, preferably, C8-12 alkylene), useful as antidiabetic agents, for treatment of Diabetes mellitis type II, and diabetes-induced tumors, were prepared by quaternization of PPh3 with 1,ω-dihaloalkanes XZX (2, X = halo), amination of resulting haloalkylphosphonium salts XZPPh3+X- with ammonia or primary amines R1NH2 and reaction with cyanoguanidines R5R4NC(:NR6)NCN. The prepared compounds 1 were examined for growth inhibition and apoptosis of pancreatic cell lines, for suppression of mitochondrial respiration through inhibition of complex I and increase of production of ROS. The experimental process involved the reaction of (6-Bromohexyl)triphenylphosphonium bromide(cas: 83152-22-1).Application of 83152-22-1

The Article related to biguanide phosphonium salt derivative preparation antidiabetic antitumor agent, pancreatic tumor cell line inhibition biguanide phosphonium salt, mitochondrial respiration inhibition tumor cell line biguanide phosphonium salt, reactive oxygen species generation tumor cell line biguanide phosphonium and other aspects.Application of 83152-22-1

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary