Determination of the rate constant for ring opening of an alpha-cyclopropylvinyl radical.
The rate constant for ring opening of the 1-(trans-2-phenylcyclopropyl)ethen-1-yl radical, 4, generated by photolysis of the corresponding vinyl iodide 2, is reported. The value of the rate constant was determined by the tin hydride method and was found to be (1.6+/-0.2)x10(10) s-1, one order of magnitude smaller than the rate constant for rearrangement of the trans-2-phenylcyclopropylcarbinyl radical.
Milnes
Kaarina K
KK
Department of Chemistry, University of Western Ontario, London, Ontario, Canada N6A 5B7.
Gottschling
Stephen E
SE
Baines
Kim M
KM