Results 171 to 180 of about 2,994 (192)

Thermodynamic and spectroscopic properties of 2‐pyrrolidinones. 3. NMR spectroscopic studies on 2‐pyrrolidinone in different solvents

Journal of Physical Organic Chemistry, 1989
Abstract1H, 13C, 15N and 17O NMR chemical shifts, 1JNH and 1JCH coupling constants and line widths (Δν1/2) of the 14N and 17O resonance lines were determined for 2‐pyrrolidinone neat and for several 2‐pyrrolidinone–solvent systems. The 17O NMR chemical shift of 2‐pyrrolidinone was clearly most sensitive to the solvent effects, but changes with the ...
P. Ruostesuo, P. Pirilä‐Honkanen, L. Heikkinen   +2 more
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Atmospheric chemistry of 1-methyl-2-pyrrolidinone

Atmospheric Environment, 1999
Rate constants for the atmospheric reactions of 1-methyl-2-pyrrolidinone with OH radicals, NO3 radicals and O3 have been measured at 296±2 K and atmospheric pressure of air, and the products of the OH radical and NO3 radical reactions investigated. Using relative rate techniques, rate constants for the gas-phase reactions of OH and NO3 radicals with 1 ...
Sara M. Aschmann, Roger Atkinson
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Recent development in 2‐pyrrolidinone‐containing nootropics

Drug Development Research, 1989
AbstractThis paper reviews the development of the concept of nootropics‐‐compounds whose activity appears to be specific to enhancement and protection of those functions of plasticity of the central nervous system that we now call cognition. The rest of the review focuses on clinical and preclinical results reported on 2‐pyrrolidinone‐containing ...
Elkan Gamzu, Toni M. Hoover, Stephen I. Gracon, Monica V. Ninteman   +3 more
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Synthetic Approaches to 2-Pyrrolidinone-5-carboxaldehyde

Synthetic Communications, 1996
Abstract We have examined routes for the preparation of 2-pyrrolidinone-5S-carboxaldehyde which include oxidation of 5-hydroxymethyl-2-pyrrolidinone and reduction of 5-oxoproline ethyl ester. Only the oxidation route proved satisfactory. Moffatt oxidation was most efficient but PCC oxidation gave modest yields of the desired aldehyde.
Jeffrey Deskus, Michael B. Smith, Tiberiu Simandan   +2 more
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α-Arylation of pyrrolidinones

The Journal of Organic Chemistry, 1987
Jon D. Stewart, Stephen C. Fields, Kanwarpal S. Kochhar, Harold W. Pinnick   +3 more
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1-Methyl-2-Pyrrolidinone

2021
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3-Pyrrolidinones by Intramolecular Condensation

Journal of the American Chemical Society, 1964
James. Blake, Clyde D. Willson, Henry. Rapoport   +2 more
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N-Methyl-2-pyrrolidinone, 2-Methyl-2-pyrrolidinone, and 1-Methyl-2-pyrrolidinone)

Cold Spring Harbor Protocols, 2006
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Synthesis of 5-alkylidene-2-pyrrolidinones

Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 1989
S. I. Zav'yalov, N. E. Kravchenko
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Pyrrolidinones

1996
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