efficiently promoted by ruthenium(VI) imidoporphyrin complexes and yields a mixture of 5‐aryl (A) and 4‐aryl (B) substituted oxazolidin‐2‐ones with a regioisomeric A/B ratio up to 99:1. Several oxazolidin‐2‐one molecules were synthesized at 100 °C and 0.6 MPa of carbondioxide by using the low catalytic loading of 1 mol‐%. The formation of a deactivated compound, deriving from the ruthenium catalyst, suggested
Stereocontrolled oxazolidinone formation by the addition of 4,5-disubstituted iminodioxolane to oxirane via a spiro compound
作者:Akio Baba、Kenji Seki、Haruo Matsuda
DOI:10.1021/jo00008a021
日期:1991.4
4,5-Disubstituted 2-imino-1,3-dioxalanes readily add to oxiranes in the presence of AlCl3, furnishing 1,3-oxazolidin-2-ones in a stereospecific manner, where the configurations of oxiranes and iminodioxolanes are responsible for the configuration of products and the feasibility of the addition, respectively. A preliminary adduct, a spiro compound intermediate, is isolated, and its decomposition to oxazolidinone is demonstrated.
BABA, AKIO;SEKI, KENJI;MATSUDA, HARUO, J. ORG. CHEM., 56,(1991) N, C. 2684-2688