Enantioselective Synthesis of C2-Symmetric Spirobipyridine Ligands through Cationic Rh(I)/Modified-BINAP- Catalyzed Double [2 + 2 + 2] Cycloaddition

Autor: Azusa Wada, Keiichi Noguchi, Ken Tanaka, Masao Hirano
Rok vydání: 2007
Předmět:
Zdroj: Organic Letters. 9:1295-1298
ISSN: 1523-7052
1523-7060
DOI: 10.1021/ol070129e
Popis: [structure: see text]. Enantioenriched C2-symmetric spirobipyridine ligands were efficiently synthesized through a cationic rhodium(I)/(R)-Segphos or (R)-H8-BINAP complex-catalyzed enantioselective intramolecular double [2 + 2 + 2] cycloaddition of bis-diynenitriles.
Databáze: OpenAIRE