Tag: M.W=200-250

Joshua, C. P. published the artcileOxidation of mixtures of thiocarbamides. II. Oxidation of mixtures of 1-alkyl-3-arylthiocarbamides and thiocarbamide. Formation of 3-amino-5-alkylimino-4-aryl-1,2,4-Δ2-thiadiazolines, Formula: C2H8Cl2N4S2, the publication is Indian Journal of Chemistry (1974), 12(9), 962-5, database is CAplus.

Oxidation of mixtures of 1-alkyl-3-arylthiocarbamides and thiocarbamide yielded 3-amino-5-alkylimino-4-aryl-1,2,4-Δ2-thiadiazolines. The role of 1-amidino-3-alkyl-1-arylthiocarbamide-HCl as intermediates in the oxidation was established by their isolation under mild conditions. The 1-amidino-3-alkyl-1-arylthiocarbamide salts and 3-amino-5-alkylimino-4-aryl-1-2,4-Δ2-thiadiazolines are interconvertible by oxidation-reduction Interactions between bis(N-alkyl-N’-aryl)dithioformamidine dihydrochlorides and dithioformamidine dihydrochloride also lead to 1-amidino-3-alkyl-1-arylthiocarbamide salts.

Indian Journal of Chemistry 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, Formula: C2H8Cl2N4S2.

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

Joshua, C. P. published the artcileOxidation of mixtures of s-diarylthiocarbamides and thiocarbamide. Formation of 3-amino-4-aryl-5-arylimino-1,2,4Δ2-thiadiazolines, Computed Properties of 14807-75-1, the publication is Indian Journal of Chemistry (1973), 11(12), 1272-5, database is CAplus.

Oxidation of an acid alc. solution of a binary mixture of s-diphenyl-, s-di-o-tolyl- or s-di-p-tolylthiocarbamide and thiocarbamide yields the related 3-amino-4-aryl-5-(arylimino)-1,2,4-Δ2-thiadiazoline (I). A mechanism of formation is described.

Indian Journal of Chemistry 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, Computed Properties of 14807-75-1.

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

Prakash, Govindan published the artcileHeteroleptic binuclear copper(I) complexes bearing bis(salicylidene)hydrazone ligands: Synthesis, crystal structure and application in catalytic N-alkylation of amines, Category: ethers-buliding-blocks, the publication is Polyhedron (2015), 62-69, database is CAplus.

A new series of heteroleptic binuclear Cu(I) bis(salicylidene)hydrazone complexes (1–4) bearing triphenylphosphine coligands have been synthesized from the reactions of copper(II) precursor complex [CuCl₂(PPh₃)₂] with oxadiazole compounds A-D, resp. It has been observed that the oxadiazole compounds undergo ring cleavage with in situ reduction of Cu(II) ion, during the formation of complexes (1–4). The oxadiazoles (A-D) and the Cu(I) complexes (1–4) have been characterized by anal. and spectroscopic methods. Single crystal x-ray diffraction study of complex 2 revealed a distorted tetrahedral geometry around each Cu(I) center. Catalytic efficiency of the new complexes on the N-alkylation of amines using alcs. was studied under optimized conditions. The new complexes have also been tested for their catalytic activity towards the direct N-alkylation of 2-nitropyridine.

Polyhedron 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, Category: ethers-buliding-blocks.

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

Ledovskikh, V. M. published the artcilePolarographic study of the reaction of thiourea with copper(II) sulfate, COA of Formula: C2H8Cl2N4S2, the publication is Zhurnal Obshchei Khimii (1976), 46(1), 11-15, database is CAplus.

Results are given on the reaction of thiourea [62-56-6] and some of its derivatives with CuSO4 [7758-98-7] in H2SO4 solutions by using the polarog. method. The anomalous behavior can be explained by the presence of highly surface-active complexes of Cu(I) with thiourea. The thiourea and its derivatives is oxidized by the Cu(II) ion to form the appropriate formamidine disulfide, together with complexes of the original substance with Cu(I). Quant. determination of the products of the reaction are possible by polarog. The presence in the H2SO4 electrolyte of Cu compounds of the disulfide class is a necessary condition for the brightening action of dimethylolthiourea [3084-25-1] and its dialkyl esters.

Zhurnal Obshchei Khimii 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, COA of Formula: C2H8Cl2N4S2.

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

Menk, Florian published the artcileReactivity Studies of Alkoxy-Substituted [2.2]Paracyclophane-1,9-dienes and Specific Coordination of the Monomer Repeating Unit during ROMP, Formula: C15H24O2, the publication is Macromolecules (Washington, DC, United States) (2015), 48(20), 7435-7445, database is CAplus.

The polymerization of alkoxy-substituted [2.2]paracyclophane-1,9-dienes via ring-opening metathesis polymerization (ROMP) to obtain soluble poly(p-phenylenevinylene)s is a versatile method due to its living nature which enables the possibility of block copolymerization and end group modification. However, detailed studies on the reactivity behavior and the polymerization process of alkoxy-substituted [2.2]paracyclophane-1,9-dienes have not been reported so far. Herein we present a detailed study on the varying tendencies of the four isomers of dimethoxy-(2-ethylhexyloxy)-[2.2]paracyclophane-1,9-diene to undergo ROMP. Therefore, we carried out polymerization combining all individual isomers with five different metathesis catalysts and collected initiation and propagation kinetics for various combinations. Furthermore, we revealed a specific coordination of the monomer repeating unit to the catalyst during the polymerization process and succeeded to polymerize not only the pseudogeminal isomers but also one of the pseudo-ortho isomers.

Macromolecules (Washington, DC, United States) 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, Formula: C15H24O2.

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

Mercier, F. published the artcileThe antispasmodic action of several benzyl derivatives of α-aminopyridine, Application of N-(4-Methoxybenzyl)pyridin-2-amine, the publication is Travaux de la Societe de Pharmacie de Montpellier (1947), 131-4, database is CAplus.

2-(4-Methoxybenzylamino)pyridine (I) (m.p. 120-1°), 2-(3,4-dimethoxybenzylamino)pyridine (II) (m.p. 165°), and 2-(3,4-methylenedioxybenzylamino)pyridine (III) (m.p. 96°) were prepared from the appropriate aldehyde and 2-aminopyridine in the presence of Na (cf. Funke and Fourneau, C.A. 38, 3262.8). At concentrations of 1:12,500 and 1:25,000 in Tyrode solution all 3 compounds depressed the tonus and activity of isolated rabbit intestine preparations Their action in this regard was inferior to that of papaverine. The spasms produced in the isolated intestine by acetylcholine or BaCl₂ were diminished by all 3 compounds (spasmolytic action). The order of effectiveness was: I > III > II. By administration prior to the BaCl₂ the spasm could be suppressed by I, somewhat diminished by III, but unmodified by II. None of the compounds had any effect on the spasm when administered prior to acetylcholine.

Travaux de la Societe de Pharmacie de Montpellier 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

Rio, L. Garcia published the artcileKinetic study of the stability of (NH₂)₂CSSC(NH₂)₂²⁺, Safety of Formamidine disulfide dihydrochloride, the publication is Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry (1996), 159-62, database is CAplus.

The kinetics of the decomposition of formamidine disulfide dihydrochloride, (NH₂)₂CSSC(NH₂)₂²⁺ 2Cl^–, in aqueous solution at 25° are general base catalyzed, and rate constants were measured over the pH range 1.91-9.03. Anal. of the data yields ionization constants pK₁ = 5.49, pK₂ = 7.66 and rate constants for deprotonation of the substrate by OH^– and H₂O. For the doubly charged cation, reaction occurs through a small concentration of a reactive tautomer, (HN=)(NH₃⁺)CSSC⁺(NH₂)₂, which is attacked by H₂O. The singly charged cation reacts by parallel pathways involving OH^– and H₂O as attacking bases.

Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry 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

Bombicz, Petra published the artcileSynthesis, vibrational spectra and X-ray structures of copper(I) thiourea complexes, Safety of Formamidine disulfide dihydrochloride, the publication is Inorganica Chimica Acta (2004), 357(2), 513-525, database is CAplus.

Complex formation of thiourea with Cu takes place as an intermediate step in the preparation of Cu sulfide thin films by spray pyrolysis starting from aqueous solutions of Cu(II) chloride and thiourea. The stoichiometry of the complex and that of the resulting thin film primarily depends on the mol. ratio of the starting materials. For comparison, the structures of all Cu(I) thiourea complexes found in the Cambridge Structural Database are classified. Syntheses, structural (single crystal XRD also at low temperature 193 K) and spectroscopic studies (FTIR and Raman) of six Cu-thiourea complexes are now reported. The Cu to thiourea stoichiometric ratio is 1:3 in four of these complexes, but their structures are basically different as dimerization or polymer formation takes place depending on whether the H₂O of crystallization is present or absent. The structure of bis(μ-thiourea)tetrakis(thiourea)dicopper(I) dichloride dihydrate, [Cu₂(tu)₆]Cl₂·2H₂O (1) was determined at room and also at low temperature Bis(μ-thiourea)tetrakis(thiourea)dicopper(I) dibromide dihydrate, [Cu₂(tu)₆]Br₂·2H₂O (2) is isomorphous with 1, and the anhydrous compounds chlorotris(thiourea)copper(I), [Cu(tu)₃]Cl (3) and bromotris(thiourea)copper(I), [Cu(tu)₃]Br (4) are isomorphous. In the 3rd isomorphous pair of complexes the Cu to thiourea stoichiometric ratio is 1:1, viz. chloro(thiourea)copper(I) hemihydrate, [Cu(tu)]Cl·0.5H₂O (5) and bromo(thiourea)copper(I) hemihydrate, [Cu(tu)]Br·0.5H₂O (6). During the preparation of chloro(thiourea)copper(I) hemihydrate (5) a reaction byproduct α,α^‘-dithiobisformamidinium dichloride, [SC(NH₂)₂]₂Cl₂ (7) was identified and structurally characterized which made it possible to suggest a reaction path leading to complex formation.

Inorganica Chimica Acta 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

Blank, Benoit published the artcileSelective iridium-catalyzed alkylation of (hetero)aromatic amines and diamines with alcohols under mild reaction conditions, Application of N-(4-Methoxybenzyl)pyridin-2-amine, the publication is Chemistry – A European Journal (2009), 15(15), 3790-3799, database is CAplus and MEDLINE.

A P,N-ligand-coordinated iridium complex has been employed as an efficient catalyst for the selective monoalkylation of (hetero)aromatic amines with alcs. A significant improvement of this alkylation method has been achieved, such that it can be performed at a temperature of 70°C and with catalyst loadings as low as 0.1 mol% Ir, while still affording excellent yields of secondary amines. Furthermore, the high selectivity of this catalyst for the monoalkylation of aromatic amino functions has been successfully exploited for the alkylation of diamines in both sym. and nonsym. fashions, providing a novel and very efficient synthetic tool for the preparation of N,N’-dialkylated aromatic diamines.

Chemistry – A European Journal 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

Karastatiris, Panayiotis published the artcileBipolar poly(p-phenylene vinylene)s bearing electron-donating triphenylamine or carbazole and electron-accepting quinoxaline moieties, Recommanded Product: 1-((2-Ethylhexyl)oxy)-4-methoxybenzene, the publication is Journal of Polymer Science, Part A: Polymer Chemistry (2008), 46(7), 2367-2378, database is CAplus.

Two new poly(phenylenevinylene)s (PPVs) carrying electron-donating triphenylamine or carbazole and electron-deficient quinoxaline units were synthesized and characterized. Their properties were compared with those of PPV containing only quinoxaline unit. The two polymers showed PL maximum at 501-510 in solution and 533-540 in thin film. Because of the presence of electron donor and acceptor units they displayed strong intramol. charge transfer (ICT) effects; hence, low-photoluminescence (PL) quantum yields. The polymers showed reversible electrochem. reduction with electron affinity of 2.75 eV and irreversible oxidation with ionization potential of 5.10-5.24 eV. Single-layer LED of configuration ITO/PEDOT/polymer/Al showed low turn-on voltage at 5 V, but limited brightness of 50-60 cdm^-2. The electroluminescence maximum was voltage-tunable varying from 500 to 542 nm.

Journal of Polymer Science, Part A: Polymer Chemistry 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