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JACS
Zwitterions have been detected in thermal reactions of ketenes with imidazoles. The direct observation of the zwitterions firmly establishes that the thermal cycloaddition of ketenes with carbon-nitrogen double bonds is a two-step process. © 1982, American Chemical Society. All rights reserved.
J. Pacansky, M. Dupuis
JACS
M. Yoshimine, J. Pacansky, et al.
JACS
J. Pacansky, R.J. Waltman, et al.
Journal of Physical Chemistry
Per E. M. Siegbahn, M. Yoshimine, et al.
The Journal of Chemical Physics