The range and scope of the oxidative oxazoline–oxazinone rearrangement–hydrogenation sequence (OOOH)—a short, direct asymmetric synthesis of α‐amino acids from carboxylic acids—was explored. The highest yet reported diastereoselectivity for hydrogenation of the oxazinone CN bond (d.r.=>80:1) is disclosed and rationalized with the aid of ab initio molecular calculations.
研究了氧化
恶唑啉-恶嗪酮重排-氢化序列(OOOH)的范围和范围,即由
羧酸短而直接地不对称合成
α-氨基酸。公开了迄今报道的最高的对恶嗪酮C hydrogenN键氢化的非对映选择性(dr => 80:1),并借助从头算分子的方法使之合理化。