Category: 36437-30-6

Makara, Gergely M. published the artcileSynthesis of Bicyclic Pyrimidine Derivatives as ATP Analogues, Formula: C26H42Br2N2, the main research area is pyrimidine bicyclic derivative solid phase synthesis reduction; ATP analog solid phase synthesis reduction.

A highly efficient and general solid-phase synthesis of bicyclic pyrimidine derivatives that target purine dependent proteins is reported. The synthesis of the key intermediate, 4,6-disubstituted-5-amino-pyrimidine, involved reduction of the corresponding nitro derivatives using 1,1′-dioctyl-viologen in a triphasic milieu. The mild reduction conditions enable the use of any acid labile solid support as well as a wide range of combinatorial substituents, thus enabling the synthesis of large libraries of highly diverse bicyclic pyrimidines. Alternative reduction conditions with tin(II) chloride and structure-reactivity studies are discussed as well.

Journal of Organic Chemistry published new progress about Reduction. 36437-30-6 belongs to class pyridine-derivatives, name is 1,1-Di-n-octyl-4,4-bipyridinium Dibromide, and the molecular formula is C26H42Br2N2, Formula: C26H42Br2N2.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Liu, Xiaoxi published the artcileRegulating Molecular Recognition with C-Shaped Strips Attained by Chirality-Assisted Synthesis, Safety of 1,1-Di-n-octyl-4,4-bipyridinium Dibromide, the main research area is chirality assisted synthesis mol recognition mol shape strip; chirality-assisted synthesis; cooperative effects; host-guest interactions; shape control; supramolecular chemistry.

Chirality-assisted synthesis (CAS) is a general approach to control the shapes of large mol. strips. CAS is based on enantiomerically pure building blocks that are designed to strictly couple in a single geometric orientation. Fully shape-persistent structures can thus be created, even in the form of linear chains. With CAS, selective recognition between large host and guest mols. can reliably be designed de novo. To demonstrate this concept, three C-shaped strips that can embrace a pillar[5]arene macrocycle were synthesized. The pillar[5]arene bound to the strips was a better host for electron-deficient guests than the free macrocycle. Exptl. and computational evidence is provided for these unique cooperative interactions to illustrate how CAS could open the door towards the precise positioning of functional groups for regulated supramol. recognition and catalysis.

Angewandte Chemie, International Edition published new progress about Chirality. 36437-30-6 belongs to class pyridine-derivatives, name is 1,1-Di-n-octyl-4,4-bipyridinium Dibromide, and the molecular formula is C26H42Br2N2, Safety of 1,1-Di-n-octyl-4,4-bipyridinium Dibromide.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Kovacs, Kornel L. published the artcileHydrogen evolution from dithionite and hydrogen photoproduction by hydrogenase incorporated into various hydrophobic matrixes, Formula: C26H42Br2N2, the main research area is hydrogen photoproduction hydrogenase dithionite viologen; ruthenium bipyridyl hydrogenase hydrogen photoproduction; surfactant liposome hydrogenase hydrogen photoproduction; solar energy hydrogen photoproduction water.

The effects of surfactants, lipids, and amphiphilic viologen mediators on H production from Na2S2O4 and tris(2,2′-bipyridine)Ru(2+) [15158-62-0] sensitized H photoproduction by hydrogenae from Thiocapsa roseopersicina were studied. Three systems which differed as to the nature of the hydrophobic matrix around the hydrogenase were tested. An enhanced hydrogenase activity was observed in the presence of surfactants in the 1-6 mM concentration range. Hydrogenase showed a selectivity for the amphiphilic viologens. N,N’-Diheptyl-4,4′-dipyridinium dichloride  [54451-15-9] was the most efficient electron mediator in both reactions. H photoproduction was not feasible in the detergent-hydrogenase system because of intensive foaming. Hydrogenase incorporated into liposomes catalyzed H photoevolution efficiently but the rate was decreasing in time, though reversibly. Using intact bacterial cells instead of purified hydrogenase yielded stable H photoevolution for â‰?2 h. This system offers several advantages for potential practical applications.

Biochimie published new progress about Photolysis. 36437-30-6 belongs to class pyridine-derivatives, name is 1,1-Di-n-octyl-4,4-bipyridinium Dibromide, and the molecular formula is C26H42Br2N2, Formula: C26H42Br2N2.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Lamberto, Massimiliano published the artcileMicrowave-assisted synthesis of symmetric and asymmetric viologens, SDS of cas: 36437-30-6, the main research area is sym asym viologen microwave assisted synthesis.

Viologens are generally synthesized by N-alkylating 4,4′-bipyridine with alkyl halides. Under conventional heating conditions, however, their synthesis suffers from long reaction times and, often, low yields. In this work, sym. and asym. viologens were synthesized under the assistance of microwave irradiation in good to excellent yields and in short reaction times.

Tetrahedron Letters published new progress about Alkylation. 36437-30-6 belongs to class pyridine-derivatives, name is 1,1-Di-n-octyl-4,4-bipyridinium Dibromide, and the molecular formula is C26H42Br2N2, SDS of cas: 36437-30-6.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Li, Guoping published the artcilePost-chromatographic dicationic ionic liquid-based charge complexation for highly sensitive analysis of anionic compounds by ultra-high-performance supercritical fluid chromatography coupled with electrospray ionization mass spectrometry, Safety of 1,1-Di-n-octyl-4,4-bipyridinium Dibromide, the main research area is anion analysis UHP supercritical fluid chromatog electrospray ionization MS.

A green anal. strategy has been developed for the anal. of 10 perfluorinated compounds (PFCs) incorporating supramol. solvent (SUPRAS)-based extraction and ultra-high-performance supercritical fluid chromatog. (UHPSFC)-tandem mass spectrometry. The SUPRAS was prepared through self-assembly of reverse micelles by mixing heptanol, THF, and water at optimized volume ratios. An imidazolium-based germinal dicationic ionic liquid (DIL), 1,1-bis(3-methylimidazolium-1-yl) butylene difluoride ([C4(MIM)2]F2), was dissolved in the make-up solvent of UHPSFC and introduced post-column but before the electrospray ionization source. After chromatog. separation on a Torus DIOL anal. column (100 mm x 2.1 mm, 1.7μm), the PFC analytes associated with the DIL reagent through charge complexation. The formation of pos. charged complexes resulted in improved ionization efficiency and anal. sensitivity. Enhancement in signal intensity by one to two magnitudes was achieved in the pos. ionization mode compared to the neg. ionization mode without using the dicationic ion-pairing reagent. The developed protocol was applied to 32 samples of real textiles and 6 samples of real food packaging materials, which exhibited great potential for the anal. of anionic compounds

Analytical Chemistry (Washington, DC, United States) published new progress about Calibration. 36437-30-6 belongs to class pyridine-derivatives, name is 1,1-Di-n-octyl-4,4-bipyridinium Dibromide, and the molecular formula is C26H42Br2N2, Safety of 1,1-Di-n-octyl-4,4-bipyridinium Dibromide.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Makara, Gergely M. published the artcileSynthesis of Bicyclic Pyrimidine Derivatives as ATP Analogues, Formula: C26H42Br2N2, the main research area is pyrimidine bicyclic derivative solid phase synthesis reduction; ATP analog solid phase synthesis reduction.

A highly efficient and general solid-phase synthesis of bicyclic pyrimidine derivatives that target purine dependent proteins is reported. The synthesis of the key intermediate, 4,6-disubstituted-5-amino-pyrimidine, involved reduction of the corresponding nitro derivatives using 1,1′-dioctyl-viologen in a triphasic milieu. The mild reduction conditions enable the use of any acid labile solid support as well as a wide range of combinatorial substituents, thus enabling the synthesis of large libraries of highly diverse bicyclic pyrimidines. Alternative reduction conditions with tin(II) chloride and structure-reactivity studies are discussed as well.

Journal of Organic Chemistry published new progress about Reduction. 36437-30-6 belongs to class pyridine-derivatives, name is 1,1-Di-n-octyl-4,4-bipyridinium Dibromide, and the molecular formula is C26H42Br2N2, Formula: C26H42Br2N2.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Liu, Xiaoxi published the artcileRegulating Molecular Recognition with C-Shaped Strips Attained by Chirality-Assisted Synthesis, Safety of 1,1-Di-n-octyl-4,4-bipyridinium Dibromide, the main research area is chirality assisted synthesis mol recognition mol shape strip; chirality-assisted synthesis; cooperative effects; host-guest interactions; shape control; supramolecular chemistry.

Chirality-assisted synthesis (CAS) is a general approach to control the shapes of large mol. strips. CAS is based on enantiomerically pure building blocks that are designed to strictly couple in a single geometric orientation. Fully shape-persistent structures can thus be created, even in the form of linear chains. With CAS, selective recognition between large host and guest mols. can reliably be designed de novo. To demonstrate this concept, three C-shaped strips that can embrace a pillar[5]arene macrocycle were synthesized. The pillar[5]arene bound to the strips was a better host for electron-deficient guests than the free macrocycle. Exptl. and computational evidence is provided for these unique cooperative interactions to illustrate how CAS could open the door towards the precise positioning of functional groups for regulated supramol. recognition and catalysis.

Angewandte Chemie, International Edition published new progress about Chirality. 36437-30-6 belongs to class pyridine-derivatives, name is 1,1-Di-n-octyl-4,4-bipyridinium Dibromide, and the molecular formula is C26H42Br2N2, Safety of 1,1-Di-n-octyl-4,4-bipyridinium Dibromide.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Kovacs, Kornel L. published the artcileHydrogen evolution from dithionite and hydrogen photoproduction by hydrogenase incorporated into various hydrophobic matrixes, Formula: C26H42Br2N2, the main research area is hydrogen photoproduction hydrogenase dithionite viologen; ruthenium bipyridyl hydrogenase hydrogen photoproduction; surfactant liposome hydrogenase hydrogen photoproduction; solar energy hydrogen photoproduction water.

The effects of surfactants, lipids, and amphiphilic viologen mediators on H production from Na2S2O4 and tris(2,2′-bipyridine)Ru(2+) [15158-62-0] sensitized H photoproduction by hydrogenae from Thiocapsa roseopersicina were studied. Three systems which differed as to the nature of the hydrophobic matrix around the hydrogenase were tested. An enhanced hydrogenase activity was observed in the presence of surfactants in the 1-6 mM concentration range. Hydrogenase showed a selectivity for the amphiphilic viologens. N,N’-Diheptyl-4,4′-dipyridinium dichloride  [54451-15-9] was the most efficient electron mediator in both reactions. H photoproduction was not feasible in the detergent-hydrogenase system because of intensive foaming. Hydrogenase incorporated into liposomes catalyzed H photoevolution efficiently but the rate was decreasing in time, though reversibly. Using intact bacterial cells instead of purified hydrogenase yielded stable H photoevolution for â‰?2 h. This system offers several advantages for potential practical applications.

Biochimie published new progress about Photolysis. 36437-30-6 belongs to class pyridine-derivatives, name is 1,1-Di-n-octyl-4,4-bipyridinium Dibromide, and the molecular formula is C26H42Br2N2, Formula: C26H42Br2N2.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Lamberto, Massimiliano published the artcileMicrowave-assisted synthesis of symmetric and asymmetric viologens, SDS of cas: 36437-30-6, the main research area is sym asym viologen microwave assisted synthesis.

Viologens are generally synthesized by N-alkylating 4,4′-bipyridine with alkyl halides. Under conventional heating conditions, however, their synthesis suffers from long reaction times and, often, low yields. In this work, sym. and asym. viologens were synthesized under the assistance of microwave irradiation in good to excellent yields and in short reaction times.

Tetrahedron Letters published new progress about Alkylation. 36437-30-6 belongs to class pyridine-derivatives, name is 1,1-Di-n-octyl-4,4-bipyridinium Dibromide, and the molecular formula is C26H42Br2N2, SDS of cas: 36437-30-6.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Li, Guoping published the artcilePost-chromatographic dicationic ionic liquid-based charge complexation for highly sensitive analysis of anionic compounds by ultra-high-performance supercritical fluid chromatography coupled with electrospray ionization mass spectrometry, Safety of 1,1-Di-n-octyl-4,4-bipyridinium Dibromide, the main research area is anion analysis UHP supercritical fluid chromatog electrospray ionization MS.

A green anal. strategy has been developed for the anal. of 10 perfluorinated compounds (PFCs) incorporating supramol. solvent (SUPRAS)-based extraction and ultra-high-performance supercritical fluid chromatog. (UHPSFC)-tandem mass spectrometry. The SUPRAS was prepared through self-assembly of reverse micelles by mixing heptanol, THF, and water at optimized volume ratios. An imidazolium-based germinal dicationic ionic liquid (DIL), 1,1-bis(3-methylimidazolium-1-yl) butylene difluoride ([C4(MIM)2]F2), was dissolved in the make-up solvent of UHPSFC and introduced post-column but before the electrospray ionization source. After chromatog. separation on a Torus DIOL anal. column (100 mm x 2.1 mm, 1.7μm), the PFC analytes associated with the DIL reagent through charge complexation. The formation of pos. charged complexes resulted in improved ionization efficiency and anal. sensitivity. Enhancement in signal intensity by one to two magnitudes was achieved in the pos. ionization mode compared to the neg. ionization mode without using the dicationic ion-pairing reagent. The developed protocol was applied to 32 samples of real textiles and 6 samples of real food packaging materials, which exhibited great potential for the anal. of anionic compounds

Analytical Chemistry (Washington, DC, United States) published new progress about Calibration. 36437-30-6 belongs to class pyridine-derivatives, name is 1,1-Di-n-octyl-4,4-bipyridinium Dibromide, and the molecular formula is C26H42Br2N2, Safety of 1,1-Di-n-octyl-4,4-bipyridinium Dibromide.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem