A. Goti, A. Brandi, G. Danza
1989
Citations
0
Influential Citations
12
Citations
Journal
Journal of The Chemical Society-perkin Transactions 1
Abstract
4,5-Dihydrospiro[isoxazole-5-cyclopropane] derivatives (3), having a functionalized side-chain in position 3, have been prepared by cycloaddition. Under thermolytic conditions, compounds (3), undergo rearrangement to the intermediate 5,6-dihydro-4-pyridones (4) followed immediately by a further cyclization to N-bridgehead bicyclic compounds. A side-product, ascribed a wrong structure in a preliminary communication, is proved by crystallographic analysis to be 2,3,4,4a,5,6-hexahydroquinolin-7(1H)-one (7).