Diastereoselective Synthesis of Enantiomerically Pure 3-Organosulfonyl-2-(2-oxocycloalkyl)-1,3-oxazolidines from 2-Formylcycloalkanones and β-Aminoalkanols
作者:Inga Hoppe、Holger Hoffmann、Ingeborg Gärtner、Thomas Krettek、Dieter Hoppe
DOI:10.1055/s-1991-28410
日期:——
The title compounds (3-arylsulfonyl- or 3-mesyl-2-(2-oxocycloalkyl)-1, 3-oxazolidines) belonging to two different diastereomeric series, are prepared selectively by variation of the condensation conditions. By this, the chiral information of the 2-amino- 1-alkanol is extended to the cycloalkanone ring. Opposite configuration can be set up at the stereogenic center adjacent to the carbonyl group by using the same chiral auxiliary.
标题化合物(3-芳磺酰基或3-甲磺酰基-2-(2-氧代环烷基)-1,3-噁唑啉)属于两个不同非对映异构系列,通过变化缩合条件来有选择性地制备。通过这种方法,2-氨基-1-烷醇的手性信息被扩展到环烷酮环上。通过使用相同的手性助剂,可以在靠近羰基的立体中心上设置相反的构型。