Diastereoselective Rh-Mediated Construction of 2,3,5-Trisubstituted Tetrahydrofurans
摘要:
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.
Diastereoselective Rh-Mediated Construction of 2,3,5-Trisubstituted Tetrahydrofurans
摘要:
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.
Diastereoselective Rh-Mediated Construction of 2,3,5-Trisubstituted Tetrahydrofurans
作者:Douglass F. Taber、Ying Song
DOI:10.1021/jo960758u
日期:1996.1.1
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.