Some time ago we reported3 that a second cyclopropyl group was nearly as effective as the first in accelerating the solvolysis of cyclopropylcarbinyl derivatives. Thus, the ratios of the solvolysis rates Io: 11: I2 (X= p-nitrobenzoate) in 80% aqueous dioxane at GOO were 1: 246: 23,500.? it the time, we were unsuccessful in attempts to