Jh. Horner et al., HIGHLY REGIOSELECTIVE AND RAPID RING-OPENING OF THE (METHYLENECYCLOPROPYL)METHYL RADICAL, Bioorganic & medicinal chemistry letters, 4(22), 1994, pp. 2693-2696
Ring opening of the (2-methylenecyclopropyl)methyl radical (1) was stu
died by competition methods. Radical I rearranges to the 2-vinylallyl
radical too fast to be trapped appreciably by thiophenol, but benzenes
elenol trapping was possible. The rate constant for ring opening of 1
at 5 degrees C was k(r) = 3-4 x 10(9) s(-1).