This work is a contribution to the chemistry of different types of silyl enol ethers which were applied to the regioselective synthesis of functionalized salicylates, isotetronic acids, and alkylidene-isobenzofurans.
In addition, the competition between the recently developed domino “Staudinger / semi-aza-Wittig / fragmentation” reaction of γ-azido-β-hydroxyketones and the normal aza-Wittig reaction pathway was studied.