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Titolo:
Chiral organometallic reagents. Part XXV. The stereochemistry of the ring opening of cyclopropylallyllithium compounds
Autore:
Hoffmann, RW; Koberstein, R;
Indirizzi:
Univ Marburg, Fachbereich Chem, D-35032 Marburg, Germany Univ Marburg Marburg Germany D-35032 eich Chem, D-35032 Marburg, Germany
Titolo Testata:
JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2
fascicolo: 3, , anno: 2000,
pagine: 595 - 602
SICI:
0300-9580(2000):3<595:CORPXT>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
TIN-LITHIUM EXCHANGE; CONFIGURATION; CARBANIONS; INVERSION; ACIDS; PROOF;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Hoffmann, RW Univ Marburg, Fachbereich Chem, Hans Meerwein Str, D-35032 Marburg, Germany Univ Marburg Hans Meerwein Str Marburg Germany D-35032 rmany
Citazione:
R.W. Hoffmann e R. Koberstein, "Chiral organometallic reagents. Part XXV. The stereochemistry of the ring opening of cyclopropylallyllithium compounds", J CHEM S P2, (3), 2000, pp. 595-602

Abstract

The ring opening of the cyclopropylallyllithium compounds 19 and 34 to give the alpha-durylhomoallyllithium compounds 20 has been shown to proceed at-107 degrees C with greater than or equal to 90% of stereochemical purity. The resulting alpha-durylthioalkyllithium compounds are configurationally stable at that temperature. They racemize at -78 degrees C with a half lifeof 90 min.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 12:56:52