David R. Bell, Jeffrey K. Weber, et al.
PNAS
Paper
A novel ring expansion of 1-carboethoxy-1,1-trimethylene-3-diazo-2-propanone
Abstract
The title compound undergoes an unusual thermal cyclobutyl to cyclopentyl rearrangement initiated by the intramolecular reaction of a ketene moiety produced in situ with the pendant functionality. © 1986.
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