Autor: |
Marco Bandini, Achille Umani‐Ronchi, Marzia Villa, Pier Giorgio Cozzi |
Rok vydání: |
1999 |
Předmět: |
|
Zdroj: |
Tetrahedron. 55:8103-8110 |
ISSN: |
0040-4020 |
Popis: |
The diastereoselective addition of higher order (H.O.) cuprates and zinc-copper reagents to aliphatic and aromatic chiral imines derived from ( S )-1-phenylethylamine was examined. Aliphatic chiral imines react with (Allyl) 2 CuCNLi 2 and (n-Bu) 2 Cu(CN)Li 2 in the presence of BF 3 ·Et 2 O and Me 3 SiCl in high diastereoselection, while c-C 6 H 11 Cu(CN)ZnI and AllylCu(CN)ZnBr afford chiral amines in comparable yields without additives. Moreover the synthesis of a key intermediate towards a δ-amino-acid was reported. |
Databáze: |
OpenAIRE |
Externí odkaz: |
|