Add to ORKGThe conformational equilibrium as a result of the N-carbonyl bond rotation of several N-acyl- and N-alkoxycarbonyl-2-pyrrolines have been studied. The equilibrium constants and the rotational barriers were determined by theoretical methods (AM1, PM3, HF/3-21G( * ) and HF/6-31G*) and, experimentally, by dynamic NMR (coalescence temperature). The measured rotational barriers for enecarbamates were found to be similar to 16 kcal mol(-1) in C6D6 or C6D5NO2, whereas slightly higher values were found for enamides in C6D5NO2,. Contrary to enamides, the rotational barriers for enecarbamates were not affected by changes in the polarity of the solvent employed. (C) 2002 Elsevier Science B.V. All rights reserved.60941699738
Because the measured thermodynamic properties of ethane did not agree with those calculated from sta...
(Chemical Equation Presented) Barriers to rotation of the N-alkenyl bond in a series of N-cycloalken...
The stereodynamics of N-ethyl-N-tert-butylneopentylamine 2 and three similar compounds 3–5, are repo...
Department of Chemistry, Indian Institute of Technology, Kharagpur-721 302 Temperature dependence o...
Barriers to rotation of the N-alkenyl bond in a series of N-cycloalkenyl-N-benzyl acetamide derivati...
Abstract 1-Diethylaminocyclohexene adopts a near-to-coplanar conformation at the N-Csp2bond with a ...
Abstract 1-Diethylaminocyclohexene adopts a near-to-coplanar conformation at the N-Csp2bond with a ...
Barriers to rotation of the N-alkenyl bond in a series of N-cycloalkenyl-N-benzyl acetamide derivati...
Barriers to rotation of the N-alkenyl bond in a series of N-cycloalkenyl-N-benzyl acetamide derivati...
Barriers to rotation of the N-alkenyl bond in a series of N-cycloalkenyl-N-benzyl acetamide derivati...
Abstract 1-Diethylaminocyclohexene adopts a near-to-coplanar conformation at the N-Csp2bond with a ...
Rotation around the conjugated C-N bond was investigated through dynamic NMR experiments, employing ...
Because the measured thermodynamic properties of ethane did not agree with those calculated from sta...
In a series of N-alkoxy- and N-alkyl-2,2,6,6-tetramethylpiperidines, the temperature dependence of N...
In a series of N-alkoxy- and N-alkyl-2,2,6,6-tetramethylpiperidines, the temperature dependence of N...
Because the measured thermodynamic properties of ethane did not agree with those calculated from sta...
(Chemical Equation Presented) Barriers to rotation of the N-alkenyl bond in a series of N-cycloalken...
The stereodynamics of N-ethyl-N-tert-butylneopentylamine 2 and three similar compounds 3–5, are repo...
Department of Chemistry, Indian Institute of Technology, Kharagpur-721 302 Temperature dependence o...
Barriers to rotation of the N-alkenyl bond in a series of N-cycloalkenyl-N-benzyl acetamide derivati...
Abstract 1-Diethylaminocyclohexene adopts a near-to-coplanar conformation at the N-Csp2bond with a ...
Abstract 1-Diethylaminocyclohexene adopts a near-to-coplanar conformation at the N-Csp2bond with a ...
Barriers to rotation of the N-alkenyl bond in a series of N-cycloalkenyl-N-benzyl acetamide derivati...
Barriers to rotation of the N-alkenyl bond in a series of N-cycloalkenyl-N-benzyl acetamide derivati...
Barriers to rotation of the N-alkenyl bond in a series of N-cycloalkenyl-N-benzyl acetamide derivati...
Abstract 1-Diethylaminocyclohexene adopts a near-to-coplanar conformation at the N-Csp2bond with a ...
Rotation around the conjugated C-N bond was investigated through dynamic NMR experiments, employing ...
Because the measured thermodynamic properties of ethane did not agree with those calculated from sta...
In a series of N-alkoxy- and N-alkyl-2,2,6,6-tetramethylpiperidines, the temperature dependence of N...
In a series of N-alkoxy- and N-alkyl-2,2,6,6-tetramethylpiperidines, the temperature dependence of N...
Because the measured thermodynamic properties of ethane did not agree with those calculated from sta...
(Chemical Equation Presented) Barriers to rotation of the N-alkenyl bond in a series of N-cycloalken...
The stereodynamics of N-ethyl-N-tert-butylneopentylamine 2 and three similar compounds 3–5, are repo...