Asymmetric Lewis Acid Mediated [1,2]-Rearrangement of Proline-Derived Ammonium Ylides
摘要:
The first example of asymmetric Lewis acid mediated [1,2]-rearrangement of N-benzylic proline amides to form quaternary proline derivatives is reported. The presented reaction is shown to proceed with remarkable high C-N-C chirality transfer. Various quaternary proline derivatives have been prepared in good to excellent yields and high enantiomeric purity.
Asymmetric Lewis Acid Mediated [1,2]-Rearrangement of Proline-Derived Ammonium Ylides
摘要:
The first example of asymmetric Lewis acid mediated [1,2]-rearrangement of N-benzylic proline amides to form quaternary proline derivatives is reported. The presented reaction is shown to proceed with remarkable high C-N-C chirality transfer. Various quaternary proline derivatives have been prepared in good to excellent yields and high enantiomeric purity.
Alkylation of amino acids without loss of the optical activity: preparation of .alpha.-substituted proline derivatives. A case of self-reproduction of chirality
作者:Dieter Seebach、Michael Boes、Reto Naef、W. Bernd Schweizer
DOI:10.1021/ja00354a034
日期:1983.8
Preparation d'un enolate par condensation de proline avec le pivalaldehyde suivie de deprotonation. Etude des reactions de cet enolate avec divers electrophiles. Condensation du pivalaldehyde avec d'autres aminoacides
制备 d'un enolate par 缩合脱脯氨酸 avec le 新戊醛 suvie de 质子化。Etude des反应 de cet enolate avec divers 亲电试剂。新戊醛缩合氨基酸
Asymmetric Lewis Acid Mediated [1,2]-Rearrangement of Proline-Derived Ammonium Ylides
作者:Pavel Tuzina、Peter Somfai
DOI:10.1021/ol8028803
日期:2009.2.19
The first example of asymmetric Lewis acid mediated [1,2]-rearrangement of N-benzylic proline amides to form quaternary proline derivatives is reported. The presented reaction is shown to proceed with remarkable high C-N-C chirality transfer. Various quaternary proline derivatives have been prepared in good to excellent yields and high enantiomeric purity.