Polysilanes. Synthesis, structure and thermochromic behavior
R.D. Miller, G.M. Wallraff, et al.
ACS Division of Polymer Chemistry Atlanta Meeting 1991
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.
R.D. Miller, G.M. Wallraff, et al.
ACS Division of Polymer Chemistry Atlanta Meeting 1991
J.D. Swalen, G.C. Bjorklund, et al.
SPIE San Diego 1992
R.D. Miller, D.R. McKean, et al.
Tetrahedron Letters
R.D. Miller, J.-C. Baumert, et al.
ACS Division of Polymer Chemistry Washington DC Meeting 1990