Diastereoselective Construction of 2,2,6-Trisubstituted Tetrahydropyrans by Intramolecular Alkylation Reaction of Lithium Enolates Generated from α-Alkoxy Carboxylates
作者:Tamotsu Fujisawa、Yoshiyuki Okumura、Kazuhisa Morita、Yutaka Ukaji
DOI:10.1246/bcsj.65.3487
日期:1992.12
The intramolecular alkylation reaction of enolates of t-butyl α-alkoxy carboxylates in THF–HMPA proceeded stereoselectively to afford 2,2,6-trisubstituted tetrahydropyrans with high cis-selectivity.
叔丁基α-烷氧基羧酸酯在THF-HMPA 中的分子内烷基化反应立体选择性地进行,得到具有高顺式选择性的2,2,6-三取代四氢吡喃。