A one-pot, convenient and practical method for N-acylation of 2-oxazolidinone chiral auxiliaries directly with acids in the presence of pivaloyl chloride and triethylamine is described.
A new method for N-acryloylation of Evans’ chiral auxiliaries (oxazolidin-2-ones) with α,α′-dichloro ketones in the presence of the electrogenerated base 2-pyrrolidone anion is described. N-Enoyloxazolidin-2-ones are obtained, under mild reaction conditions, in good to high yields.