Synthesis of the first water-soluble C 2 -symmetric bis(oxazolidinone) as a potential bifunctional chiral auxiliary
摘要:
The first water-soluble C-2-symmetric bis(oxazolidinone) 1, a potential bifunctional chiral auxiliary, has been synthesized via regioselective intramolecular cyclization of a biscarbamate. The sodium enolate derived from N,N'-di(phenylacetyl)bis(oxazolidinone) 7 reacts with methyl iodide with high facial selectivity (95:5). (C) 2000 Elsevier Science Ltd. All rights reserved.