hydrogenchloride; trimethylsilyl trifluoromethanesulfonate; water; triethylamine 1.) dichloromethane, 20-25 deg C, 2 h, reflux 5 h; Yield given. Multistep reaction. Title compound not separated from byproducts;

hydrogenchloride; water; triethylamine 1.) dichloromethane, 20-25 deg C, 2 h, reflux 5 h; Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts;