The photochemicalringexpansion of dispirosubstitutedcyclobutane-1,3-diones in methanol has been investigated. The formation of ringexpansion product was strongly dependent on the spiro ring size of dispiro substituent. The ring expanded acetal was obtained in a low yield when the spiro ring of dispirosubstitutedcyclobutane-1,3-diones was a five- or seven-membered ring. This is the first example
Jeanne-Carlier,R.; Bourelle-Wargnier,F., Bulletin de la Societe Chimique de France, 1976, p. 297 - 300
作者:Jeanne-Carlier,R.、Bourelle-Wargnier,F.
DOI:——
日期:——
JEANNE-CARLIER R.; BOURELLE-WARGNIER F., TETRAHEDRON LETT. <TELE-AY>, 1975, NO 22-23, 1841-1842
作者:JEANNE-CARLIER R.、 BOURELLE-WARGNIER F.
DOI:——
日期:——
Isomerisations acides de cyclobutanones tetrasubstituees
作者:F. Bourelle-Wargnier、R. Jeanne-Carlier
DOI:10.1016/0040-4020(76)80113-5
日期:1976.1
The acid-catalysed rearrangement of substituted cyclobutanones has been studied. The treatment of the the α,α′ - or α,β-tetrasubstituted compounds with trifluoroacetic acid gives α,β- or β,γ-unsaturated ketones, by a succession of Wagner-Meerwein migrations.
method for the synthesis of spirocycles starting with inexpensive and commercially available carbonyl compounds. Various spirocycles involving spiropropellane derivative have been assembled via ring-closingmetathesis with the aid of Grubbs’ first generation catalyst.