... smoothly with metallic halides, while the corresponding reaction of 1,2-allenyl sulfoxides must be mediated by certain Al(III) species. ... that of the unsubstituted 1a, and the reactions finished in from 0.3 to 3.2 h at room temperature to give the ... 4, H, H, t-C 4 H 9 (1e), 1.2, 3.2, 87 (E-3ae ...