Inert carbon free radicals. 7. The (kinetic) reverse effect and relevant synthesis of new monofunctionalized triphenylmethyl radicals and their nonradical counterparts
Inert carbon free radicals. 7. The (kinetic) reverse effect and relevant synthesis of new monofunctionalized triphenylmethyl radicals and their nonradical counterparts
The freeradicalcharacter of the benzyl bromide (1) causes accelerations in the nucleophilicsubstitution reactions with acetate and with diethyl malonate anions which are interpreted in terms of a change-transfer, biradical configuration for the SN2 transition state.
苄基溴(1)的自由基特征导致与乙酸根和丙二酸二乙酯的亲核取代反应加速,这可根据S N 2过渡态的变化转移双自由基构型来解释。