[2,3]-Wittig rearrangements of (E)-3-aza-allylic alcoholderivatives can provide access to syn or anti optically enriched 1,2-aminoalcohols by using a chirality transfer or a chiral auxiliary.
Sigmatropicrearrangements of 3‐(N‐tosylamino)allylic alcohol derivatives, a particular subclass of functionalized enamides, have been investigated. Whereas the presence of the nitrogen atom alters the stereochemical outcome of Ireland–Claisen rearrangements of glycolates derived from such substrates, [2,3]‐Wittig rearrangements of α‐allyloxy acetamides or propargylic ethers derivatives provide access