K.R. Carter, R.D. Miller, et al.
Polymer
We describe here a simple synthesis of 2-(diazoacetyl)cyclobutanones and their facile thermal rearrangement to 5-spirocyclopropyl-Δα,β-butenolides. The yield of the rearrangement product is high, and the reaction is completely stereospecific. α-Ketenylcyclobutanones have been identified spectroscopically as intermediates, and their rearrangement was studied kinetically. A strained dipolar cyclic transition is proposed for the rearrangement of the α-ketenylcyclobutanones to the corresponding 5-spirocyclopropyl-Δα,β-butenolides. © 1991, American Chemical Society. All rights reserved.
K.R. Carter, R.D. Miller, et al.
Polymer
P.N. Sanda, L. Samuel, et al.
International SAMPE Electronics Conference 1989
R.D. Miller, F. Dötz, et al.
ACS National Meeting 2002
J.P. Chen, G. Klaerner, et al.
American Chemical Society, Polymer Preprints, Division of Polymer Chemistry