Evidence against the (π2s + π2a) mechanism for the cycloadditions of allenes
作者:Daniel J. Pasto
DOI:10.1016/0040-4039(80)80140-7
日期:1980.1
The chemoselectivities in the (π4s + π2s) cycloaddition reactions of tetraphenylcyclopentadienone (TPCD) with ethyl- and 1,1-dimethylallene have been determined and are compared with those observed for reaction with maleic anhydride.