Ring Opening of Homochiral Bicyclic Oxazolidinones: Synthesis of Allylglycinol Derivatives
作者:Sung-Gon Kim、Kyo Han Ahn
DOI:10.1080/00397919808006837
日期:1998.4
6a,7-hexahydrooxazolo[3,2-c]oxazole and its 4-methyl analog were synthesized using (R)-phenylglycinol and (S)-alaninol as the chiral source, respectively. The ring opening reaction of the bicyclic oxazolidinones by an allyltrimethylsilane–titanium tetrachloride mixture afforded the corresponding substitution products with diastereoselectivity of up to ∼3:1. The major substitution product was readily
摘要 以 (R)-苯基甘氨醇为原料合成了 (4R,6aS)-2-Oxo-4-phenyl-2,4,5,6a,7-六氢恶唑并[3,2-c]恶唑及其4-甲基类似物。 S)-丙氨醇分别作为手性来源。双环恶唑烷酮通过烯丙基三甲基硅烷-四氯化钛混合物的开环反应提供了相应的取代产物,其非对映选择性高达~3:1。主要的取代产物很容易转化为烯丙基甘氨醇衍生物。