Tag: M.W=200-250

Ravnsbaek, Jens B. published the artcileMechanochemical Synthesis of Poly(phenylene vinylenes), Product Details of C15H24O2, the publication is ACS Macro Letters (2014), 3(4), 305-309, database is CAplus and MEDLINE.

We report a simple, rapid, and solvent-free methodol. for solid-state polymerizations yielding poly(phenylene vinylenes) (PPVs) promoted by ball-milling. This solid-state Gilch polymerization method produces PPVs in as little as five minutes of milling. Detailed investigations of the parameter space governing the solid-state polymerization, i.e., milling time, base strength, solid-state dilution, milling frequency, and size of milling balls, revealed that polymerization by ball-milling is a rapid process achieving mol. number average weights of up to 40 kDa in up to 70% yield. To explore the scope, a solid-state polymerization via the dithiocarbamate precursor route is explored.

ACS Macro Letters published new progress about 146370-51-6. 146370-51-6 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether, name is 1-((2-Ethylhexyl)oxy)-4-methoxybenzene, and the molecular formula is C15H24O2, Product Details of C15H24O2.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Kitani, Fumiya published the artcileCatalytic aromatic borylation via in situ-generated borenium species, Application In Synthesis of 596819-12-4, the publication is Heterocycles (2017), 95(1), 158-166, database is CAplus.

Authors have developed a catalytic direct borylation of arenes via in situ-generated borenium species. The choice of appropriate Lewis base was crucial to achieve the catalytic system. Electron-rich arenes were borylated in a regioselective manner.

Heterocycles published new progress about 596819-12-4. 596819-12-4 belongs to ethers-buliding-blocks, auxiliary class Thiophene,Boronic acid and ester,Ether,Boronate Esters,Boronic acid and ester, name is 2-(5-Methoxythiophen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, and the molecular formula is C11H17BO3S, Application In Synthesis of 596819-12-4.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Jirousek, Ludek published the artcilePositive iodine compounds as models of the thyroidal active iodine. Reaction of N-iodosuccinimide and of N-iodophthalimide with thiocarbamide goitrogens, Category: ethers-buliding-blocks, the publication is Journal of Pharmacology and Experimental Therapeutics (1974), 191(2), 341-8, database is CAplus and MEDLINE.

N-iodosuccinimide (I) [516-12-1] and N-iodophthalimide (II) [20919-42-0] reacted with 37 goitrogenic thiocarbamides in dimethyl sulfoxide to form thiocarbamide sulfenyl iodide derivatives as reaction intermediates; nongoitrogenic carbamides and other chem. analogs were unreactive. Structural studies indicated an influence of mesomerisms in the thiocarbamides on the overall reaction pathway. Some potent goitrogens were not oxidized beyond the disulfide stage. Behavior of the N-iodoimides imitates that of thyroidal active iodine more closely than I2 does, suggesting that trapping of pos. iodine is more important than the possible subsequent redox reactions in the mechanism of drug goitrogenicity.

Journal of Pharmacology and Experimental Therapeutics published new progress about 14807-75-1. 14807-75-1 belongs to ethers-buliding-blocks, auxiliary class Salt,Thiourea,Amine,Aliphatic hydrocarbon chain, name is Formamidine disulfide dihydrochloride, and the molecular formula is C2H8Cl2N4S2, Category: ethers-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Bird, Ian published the artcileSynthesis of pyrilamine-d₆, Related Products of ethers-buliding-blocks, the publication is Journal of Labelled Compounds and Radiopharmaceuticals (1985), 22(2), 109-15, database is CAplus.

Pyrilamine-d₆ (I) was synthesized from N-2-[(4-methoxyphenyl)methyl]aminopyridine and (D₃C)₂NCH₂CH₂Cl in 83% yield. The alkyl chloride was prepared in 37% overall yield in a three step reaction from p-MeC₆H₄SO₂N(CD₃)₂.

Journal of Labelled Compounds and Radiopharmaceuticals published new progress about 52818-63-0. 52818-63-0 belongs to ethers-buliding-blocks, auxiliary class Pyridine,Amine,Benzene,Ether, name is N-(4-Methoxybenzyl)pyridin-2-amine, and the molecular formula is C13H14N2O, Related Products of ethers-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Larionov, S. V. published the artcileReaction of 2,4-dithiobiuret with copper(II), silver(I), cadmium(II) and mercury(II) ions, Safety of Formamidine disulfide dihydrochloride, the publication is Izvestiya Sibirskogo Otdeleniya Akademii Nauk SSSR, Seriya Khimicheskikh Nauk (1967), 84-8, database is CAplus.

2,4-Dithiobiuret [HN:C(SH)NHC(SH):NH] (I) is determined by potentiometric titration with either iodine or with H2NC(:NH)SSC(:NH)NH2.2HCl (II). In each case I is converted to III. In the titration with iodine conducted in boiling water, the error is ∼1%. In the titration with II the error is ∼0.3%. Treatment of 0.27 g. of I in 15 ml. of 96% EtOH with a solution of 0.5 g. of CuSO4.5H2O and 1 ml. of 57% HClO4 in 200 ml. H2O (pH ∼2) or in aqueous EtOH yielded a flocculent greenish precipitate, which did not alter on standing. After 30-40 min. the precipitate yielded 0.2 g. CuC2H2N3S2. In a 50% aqueous solution of Me2CO, containing 0.1M HClO4, the reaction of Cu(ClO4)2 with I generated its most intense color (in the 400-550 mμ range) at a molar ratio of about 1:4. Cd(II) in ammoniacal solution reacted with I to give a white precipitate, which rapidly became yellow, presumably due to CdS formation. The reaction of Hg(ClO4)2 with I was followed potentiometrically. A greenish yellow precipitate, corresponding to 1:1 molar stoichiometry, formed and rapidly became black on standing. Titration of I with Ag salts did not give reproducible results.

Izvestiya Sibirskogo Otdeleniya Akademii Nauk SSSR, Seriya Khimicheskikh Nauk published new progress about 14807-75-1. 14807-75-1 belongs to ethers-buliding-blocks, auxiliary class Salt,Thiourea,Amine,Aliphatic hydrocarbon chain, name is Formamidine disulfide dihydrochloride, and the molecular formula is C2H8Cl2N4S2, Safety of Formamidine disulfide dihydrochloride.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Costa, Roberta L. da published the artcileSynthesis of phenanthridinone derivatives by direct arylation. Characterization of the absorption and emission spectra for representative examples, HPLC of Formula: 52818-63-0, the publication is Quimica Nova (2016), 39(3), 310-319, database is CAplus.

Phenanthridinones were prepared by reductive amination of anilines or pyridinamines, benzoylation, ortho-iodination and direct arylation. The phenanthridinone heterocyclic system has attracted considerable attention in recent years due to the diverse array of phys., chem. and pharmacol. properties demonstrated by natural and synthetic derivatives As a consequence there has been considerable development of synthetic methodol. for the synthesis of this and related heterocyclic ring systems. The synthetic literature is discussed and is compared with a direct arylation methodol. for the intramol. cyclization of tertiary (2-iodo)benzoylamides to generate the biaryl bond of these compounds The efficient methodol. allowed the synthesis of a number of previously unknown phenanthridinone products. The photoluminescent properties of representative examples were characterized and it is proposed that the previously unknown compound 1s reveals dual fluorescence in a manner similar to the known compound 1r.

Quimica Nova published new progress about 52818-63-0. 52818-63-0 belongs to ethers-buliding-blocks, auxiliary class Pyridine,Amine,Benzene,Ether, name is N-(4-Methoxybenzyl)pyridin-2-amine, and the molecular formula is C13H14N2O, HPLC of Formula: 52818-63-0.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Vellakkaran, Mari published the artcileAn Efficient and Selective Nickel-Catalyzed Direct N-Alkylation of Anilines with Alcohols, Recommanded Product: N-(4-Methoxybenzyl)pyridin-2-amine, the publication is ACS Catalysis (2017), 7(12), 8152-8158, database is CAplus.

Herein, we developed an efficient and selective nickel-catalyzed monoalkylation of various primary alcs. with aryl and heteroaryl amines together with diols and amino alc. derivatives Notably, the catalytic protocol consisting of an earth-abundant and non-precious NiBr₂/L1 (L1 = 1,10-phenanthroline) system enables the transformations in the presence of hydroxyl, alkene, nitrile, and nitro functionalities. As a highlight, we have demonstrated the alkylation of diamine, intramol. cyclization to N-heterocycles, and functionalization of complex vitamin E, an (±)-α-tocopherol derivative Preliminary mechanistic studies revealed the participation of a benzylic C-H bond in the rate-determining step.

ACS Catalysis published new progress about 52818-63-0. 52818-63-0 belongs to ethers-buliding-blocks, auxiliary class Pyridine,Amine,Benzene,Ether, name is N-(4-Methoxybenzyl)pyridin-2-amine, and the molecular formula is C18H35NO, Recommanded Product: N-(4-Methoxybenzyl)pyridin-2-amine.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Panigrahi, Ahwan published the artcileZnBr₂ Mediated C-N Bond Formation using Cinnamyl Alcohol and 2-Amino Pyridines, Application of N-(4-Methoxybenzyl)pyridin-2-amine, the publication is European Journal of Organic Chemistry (2021), 2021(21), 3054-3058, database is CAplus.

A simple method for C-N bond formation is disclosed by using cinnamyl alcs. and 2-amino pyridine derivatives in the presence of stoichiometric amount of zinc bromide. This reaction works with a wide range of substrates, and is compatible with primary, secondary, and homoallylic alcs. To the best of our knowledge, this is the first report for C-N bond formation using cinnamyl alc. and 2-amino pyridines using zinc bromide as a Lewis acid.

European Journal of Organic Chemistry published new progress about 52818-63-0. 52818-63-0 belongs to ethers-buliding-blocks, auxiliary class Pyridine,Amine,Benzene,Ether, name is N-(4-Methoxybenzyl)pyridin-2-amine, and the molecular formula is C13H14N2O, Application of N-(4-Methoxybenzyl)pyridin-2-amine.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Wu, Xufeng published the artcileNew route to poly(2-methoxy-3-(2′-ethyl-hexyloxy)-p-phenylene), Synthetic Route of 146370-51-6, the publication is Gaofenzi Xuebao (2003), 147-149, database is CAplus.

Poly(2-methoxy-5-(2′-ethylhexyloxy)-p-phenylenevinylene) (MEH-PPV) has been prepared by a liquid/solid two-phase reaction. The liquid phase is THF containing 1 ,4-bis(chloromethyl)-2-methoxyl-5-(2′-ethylhexyloxy) benzene as the monomer and a certain amount of tetrabutylanunmmonium bromide (TBAB) as phase transfer catalyst (PTC). The solid phase is potassium hydroxide particles with diameters <0.5 mm. Gelation was found in the polymerization processes. MEH-PPV is partially soluble because of its large molar mass. Soluble MEH-PPV was obtained by using bromomethylbenzene as retardant reagent. The molar mass of soluble MEH-PPV was measured to be 6.4 × 10⁴ g/mol. The Structure of polymer was identified by IR, Raman, UV/vis and PL spectra. A thin compact film of MEH-PPV can be formed by spin-coating and it emit a yellow light.

Gaofenzi Xuebao published new progress about 146370-51-6. 146370-51-6 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether, name is 1-((2-Ethylhexyl)oxy)-4-methoxybenzene, and the molecular formula is C7H13NO2, Synthetic Route of 146370-51-6.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Ahn, Taek published the artcileSynthesis and luminescent properties of blue light emitting polymers containing both hole and electron transporting units, Recommanded Product: 1-((2-Ethylhexyl)oxy)-4-methoxybenzene, the publication is Macromolecular Chemistry and Physics (2001), 202(16), 3180-3188, database is CAplus.

Poly[(oxy-4,4′-octa-fluoro biphenyl-oxy)-1,4-phenylenevinylene-2-methoxy-5-(2-ethylhexyl-oxy)-1,4-phenylenevinylene-1,4-phenylene], POFB-MEH-PPV, poly[(oxy-4,4′-octa-fluoro biphenyl-oxy)-1,4-phenylenevinylene-9,9-dihexyl-2,7-fluorene diyl-vinylene-1,4-phenylene], POFB-PF, and poly[(oxy-4,4′-octa-fluoro biphenyl-oxy)-1,4-phenylenevinylene-N-ethylhexyl-3,6-carbazole vinylene-1,4-phenylene], POFB-PK, were synthesized by the well-known Wittig condensation polymerization We incorporated the high electron affinity (octa-fluoro biphenyl) and hole-transporting (carbazole, fluorene, and dialkoxy phenyl) units into the conjugated main chain. The conjugation lengths are limited to the blue-emission region by ether linkage. The resulting polymers were completely soluble in common organic solvents such as chloroform, 1,2-dichloroethane, and cyclohexanone, and exhibited good thermal stability up to 300°C. The synthesized polymers showed UV-visible absorbance and photoluminescence (PL) in the ranges of 350-385 nm and 460-490 nm, resp. The fluorene or carbazole containing POFB-PF and POFB-PK showed blue photoluminescence peaks at 470 and 460 nm, resp. The single-layer light-emitting diode was fabricated in a configuration of ITO (indium-tin oxide)/polymer/Al. Electroluminescence (EL) emission of POFB-PF and POFB-PK were shown at 475 and 458 nm, resp., corresponding to the pure blue emissions. And, a dialkoxy-Ph containing POFB-MEH-PPV showed greenish blue light at 494 nm. But, LED devices from synthesized polymers showed poor device performance and high turn on voltage. So, we fabricated light-emitting diodes (LEDs) from blend polymers composed of poly[2-methoxy-5-(2-ethylhexyl-oxy)-1,4-phenylenevinylene] (MEH-PPV) and POFB-MEH-PPV (POFB-PF or POFB-PK) as the emitting layers. The EL emission maxima of each blend polymers were in the range of 573-591 nm, which indicates that the emission is mainly due to MEH-PPV and POFB-MEH-PPV (POFB-PF or POFB-PK) contributes to the enhancement of the luminescence. And each blend polymers exhibited higher EL quantum efficiency compared with MEH-PPV at the same c.d.

Macromolecular Chemistry and Physics published new progress about 146370-51-6. 146370-51-6 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether, name is 1-((2-Ethylhexyl)oxy)-4-methoxybenzene, and the molecular formula is C15H24O2, Recommanded Product: 1-((2-Ethylhexyl)oxy)-4-methoxybenzene.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem