Reaction of 1-silyloxybicyclo [n. 1.0] alkanes with iron (III) chlorides. A facile synthesis of 2-cycloalkenones via ring enlargement of cyclic ketones
Y Ito, S Fujii, T Saegusa
文献索引：Ito,Y. et al. Journal of Organic Chemistry, 1976 , vol. 41, # 11 p. 2073 - 2074
(6) 7, 8-Dimethylene-l, 3, 5-~ yciooctatriene (3e) has been reported7 to have a half-life of 45 min when exposed in the neat phase to sunlight and air. Therefore, the compound was used immediately after its preparation and workup operations after purification were done under N1 while keeping 3a in solution.(See Experimental Section.)(7) JA Elix, MV Sargent, and F. Sondheimer, J. Am. Chem. Soc., 92, 962
