http://www.cnr.it/ontology/cnr/individuo/prodotto/ID48035
C2-Symmetric fluorous diamines and diimines as ligands for metal-catalysed asymmetric cyclopropanation of styrene (Articolo in rivista)
- Type
- Label
- C2-Symmetric fluorous diamines and diimines as ligands for metal-catalysed asymmetric cyclopropanation of styrene (Articolo in rivista) (literal)
- Anno
- 2004-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1002/ejoc.200400436 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Shepperson I.; Quici S.; Pozzi G.; Nicoletti M., O'Hagan D. (literal)
- Pagina inizio
- Pagina fine
- Rivista
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- School of Chemistry and Centre for Biomolecular Sciences, University of St Andrews, UK
CNR-Istituto di Scienze e Tecnologie Molecolari, Via Golgi 19, 20133 Milano, Italy (literal)
- Titolo
- C2-Symmetric fluorous diamines and diimines as ligands for metal-catalysed asymmetric cyclopropanation of styrene (literal)
- Abstract
- Perfluoroalkyl-substituted, enantiopure C2-symmetric N and N,O ligands showing affinity either for standard organic solvents or perfluorocarbons have been conveniently prepared from readily available precursors. Preformed cobalt(II) and in-situ-generated copper(I) complexes of these ligands were tested as catalysts in the metal-catalysed cyclopropanation of styrene with diazoacetates. Under optimised reaction conditions, which include the use of a fluorous biphasic system and short reaction times, the copper complex of a C2-symmetric diamine afforded promising results (yield = 77%, trans/cis = 67:33, ee of the trans isomer = 62%) and could be easily separated from the products by simply decanting the fluorous phase. (literal)
- Prodotto di
- Autore CNR
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