5 perature. No observable reaction took place until 0" C and at this temperature the only produce was the dimer 3a. Also, the utilization of other oxidizing agents did not provide an intermediate to 3a. This study did, however, result in useful data since high yields (> go%) of the quinones 4a and 4b were realized when the corresponding (viny1oxy) phenols were treated with either FeC13 or K3-Fe (CN) & These transformations are worthy of note since ...
