A new and expeditious asymmetric synthesis of (R)- and (S)-2-aminoalkanesulfonic acids from chiral amino alcohols
作者:Jiaxi Xu
DOI:10.1016/s0957-4166(02)00312-9
日期:2002.6
mechanistic proposal, a new and rapid asymmetric synthesis of (R)- and (S)-2-aminoalkanesulfonic acids from chiral amino alcohols was developed. Chiral amino alcohols were converted to chiral aziridines through the Wenker method or Mitsunobu reaction and the resulting aziridines were reacted with sodium bisulfite to produce chiral α-amino alkanesulfonic acids.
研究了亚硫酸钠将α-氨基醇甲磺酸盐酸盐转化为β-氨基链烷磺酸钠的机理。结果表明,亚硫酸钠首先中和了α-氨基醇甲磺酸盐酸盐,得到了游离的β-氨基醇甲磺酸盐,然后环化成2-烷基氮丙啶。由先前形成的亚硫酸氢钠攻击氮丙啶环的受阻较少的碳原子,然后产生β-氨基链烷磺酸钠盐。基于这一机制的建议,(R)-和(S从手性氨基醇开发了)-2-氨基链烷磺酸。通过Wenker法或Mitsunobu反应将手性氨基醇转化为手性氮丙啶,并使所形成的氮丙啶与亚硫酸氢钠反应生成手性α-氨基链烷磺酸。