Results 161 to 170 of about 220,193 (199)
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Selective Recognition of Alkyl Pyranosides in Protic and Aprotic Solvents
Journal of the American Chemical Society, 2008The design and synthesis of receptors capable of selective, noncovalent recognition of carbohydrates continues to be a signature challenge in bioorganic chemistry. We report a new generation of tripodal receptors incorporating three pyridine (compound 2) or quinoline (compound 3) rings around a central cyclohexane core for use in molecular recognition ...
Prakash B, Palde +2 more
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Solubility and reactivity of caseins and β-lactoglobulin in protic solvents
Journal of Protein Chemistry, 1992The study of the solubility of unstructured proteins (alpha s1-, beta-, and kappa-casein) and well-structured globulin (beta-lactoglobulin) in low water binary solvent systems demonstrated the crucial importance of solvent polarity and neutralization of protein polar functions on the final outcome of solubility experiments.
Touati, A. +4 more
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Photooxidation of Co-thiolato complexes in protic and aprotic solvents
Chemical Communications, 2006Protic solvents decrease the susceptibility of the thiolate ligand in Co(III) thiolato complexes toward attack by singlet oxygen, but greatly increase the conversion of the peroxidic intermediate to the sulfenato product.
Billy, Hernandez +3 more
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Influence of Solvent Polarity and Proticity on the Photochemical Properties of Norfloxacin
Photochemistry and Photobiology, 1998Abstract— The fluoroquinolone antibacterial norfloxacin (NF) is a moderate photosensitizer of singlet molecular oxygen (1O2). We have studied photosensitization by NF as a function of medium polarity and proticity in solvent mixtures. We have used 1,4‐dioxane and propylene carbonate mixtures to keep proticity constant while modulating polarity, and ...
P, Bilski +3 more
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New protic salts of aprotic polar solvents
Tetrahedron Letters, 2004Abstract Aprotic polar solvents such as DMF, acetonitrile or DMSO can be protonated to form stable triflate salts when treated with triflic acid. The reaction of the same solvents with N , N -bis(trifluoromethanesulfonyl)imide led to the isolation of the corresponding N , N -bis(trifluoromethanesulfonyl)imide salts.
Isabelle Favier, Elisabet Duñach
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Photochemical addition of protic solvents to 1-phenylcycloalkenes
Tetrahedron, 1971Abstract Direct photolysis of 6–8-membered 1-phenylcycloalkenes (1a–1c) dissolved in acetic or propionic acid gives mainly the corresponding esters (2), which are also obtained in the acetophenone-sensitized reactions. Minor products in the direct photolysis of 1a and 1b are hydrogenation (3) and alkylation products (4), while 8-membered 1c yields 1 ...
S. Fujita +3 more
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Electroreduction of hexachlorobenzene in protic solvent at Hg cathodes
Journal of Applied Electrochemistry, 1998The electrochemical reduction of hexachlorobenzene (HCB) to lower chlorinated benzenes has been studied in methanol solution. Differential pulse voltammetry at a sessile mercury drop cathode showed four reduction waves at E=−1.13, −1.33, −1.57 and −1.84V vs the standard hydrogen electrode, corresponding to sequential reduction to penta-, tetra-, tri ...
S. G. Merica +3 more
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How Protic Solvents Determine the Reaction Mechanisms of Diphenylcarbene in Solution
The Journal of Organic Chemistry, 2019Über den Link https://pubs.acs.org/articlesonrequest/AOR-bgA7KvHSXZK8REesE7TE ist nach Login mit ACS ID und Passwort (evtl. kurze Registrierung nötig, falls noch kein Account vorhanden) ein kostenloser Zugriff auf den Volltext (ohne VPN o.
Johannes Knorr +5 more
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Gas-Phase Metal Trications in Protic Solvent Complexes
Journal of the American Chemical Society, 2002In the first observation of triply charged metal ions microsolvated by protic ligands, gas-phase complexes of 11 different metal trications with diacetone alcohol were generated using electrospray ionization. These species were found to exist for at least five to eight ligands, depending on the metal.
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Ionic Liquids as Homogeneous Photocatalyst for CO2 Reduction in Protic Solvents
Chemical Engineering Journal Advances, 2022Catherine C Santini, stephane DANIELE
exaly