Figure 2: Structural information of the 1-silyloxy-3-aminobutadiene.

(a) NMR indicated highly eletron-rich nature of the enamine moiety. (b) X-ray structure revealed an unusual twisting of the diene olefinic carbons.
(a) NMR indicated highly eletron-rich nature of the enamine moiety. (b) X-ray structure revealed an unusual twisting of the diene olefinic carbons.