Synthesis of 2,4,5-Triphenyl-Substituted Oxazolidine and 2,5-Diphenyl-Substituted Pyrrolidine Derivatives
作者:Claudia Wittland、Michael Arend、Nikolaus Risch
DOI:10.1055/s-1996-4208
日期:1996.3
A simple one-pot domino reaction procedure for the stereoselective synthesis of oxazolidines and C 2-symmetric pyrrolidines from inexpensive starting materials is described. Azomethine ylides generated in situ by heating a mixture of benzaldehyde and benzylic amines are trapped with dipolarophiles by a 1,3-dipolar cycloaddition reaction. The products represent valuable synthetic building blocks or potential starting materials for the preparation of chiral auxiliaries and are difficult to obtain by other methods.
本文描述了一种简单的单锅多米诺反应程序,用于从廉价的原料中立体选择性合成噁唑烷和C2-对称吡咯烷。通过加热苯甲醛和苄基胺的混合物,原位生成的偶氮亚甲基肟通过1,3-偶极环加成反应与偶极体结合。这些产物是制备手性助剂的宝贵合成结构单元或潜在原料,且难以通过其他方法获得。