1: With titanium tetrachloride in dichloromethane T=-78 - -50°C; Mukaiyama reaction; 2: With ammonium chloride T=-50 - 0°C; Title compound not separated from byproducts;
Moiseenkov, Alexander M.; Czeskis, Boris A.; Ivanova, Natalya M.; Nefedov, Oleg M.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1991 , p. 2639 - 2649