| Literature DB >> 11667544 |
Douglass F. Taber1, Ying Song.
Abstract
Dirhodium(II) carboxylate catalyzed cyclization of a series of gamma-alkoxy-alpha-diazo esters 1 has been shown to proceed with substantial diastereoselectivity, producing the 2,3,5-trisubstituted tetrahydrofurans 2 and 3. The diastereoselectivity of the cyclization improved as the electron-withdrawing ability of the substituent R increased. A mechanistic hypothesis is presented.Entities:
Year: 1996 PMID: 11667544 DOI: 10.1021/jo960758u
Source DB: PubMed Journal: J Org Chem ISSN: 0022-3263 Impact factor: 4.354