Results In the event, furan 2 rearranged smoothly under irradiation in pentane in almost quantitative yield to a mixture of two products in the approximate ratio of 20: 1. The major product, isolated by preparative glpc, was a ketone (vco 1716 cm-l). Bands at 3060 and 1001 cm-l marked the presence of a cyclopropane ring, and this assignment was supported by the appearance in the nmr spectrum of a one-proton doublet at T 9.34. Surprisingly, ...
