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Titolo:
SYNTHESIS AND REACTIONS OF OPTICALLY PURE CYCLOHEXYL(O-METHOXYPHENYL)PHOSPHINE-BORANE AND T-BUTYL-(O-METHOXYPHENYL)PHOSPHINE-BORANE
Autore:
IMAMOTO T; MATSUO M; NONOMURA T; KISHIKAWA K; YANAGAWA M;
Indirizzi:
CHIBA UNIV,FAC SCI,DEPT CHEM CHIBA 263 JAPAN
Titolo Testata:
Heteroatom chemistry
fascicolo: 5, volume: 4, anno: 1993,
pagine: 475 - 486
SICI:
1042-7163(1993)4:5<475:SAROOP>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
HOMOCHIRAL PHOSPHINE CENTERS; STEREOSPECIFIC REDUCTION; BORANES; LIGANDS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
18
Recensione:
Indirizzi per estratti:
Citazione:
T. Imamoto et al., "SYNTHESIS AND REACTIONS OF OPTICALLY PURE CYCLOHEXYL(O-METHOXYPHENYL)PHOSPHINE-BORANE AND T-BUTYL-(O-METHOXYPHENYL)PHOSPHINE-BORANE", Heteroatom chemistry, 4(5), 1993, pp. 475-486

Abstract

Cyclohexyl(o-methoxyphenyl) menthyloxyphosphine-borane and -butyl(o-methoxyphenyl)menthyl-oxyphosphine-borane were prepared from dichlorocyclohexylphosphine and t-butyldichlorophosphine by successive treatments with (-)-menthol, o-methoxyphenylmagnesium bromide, and borane-THF complex. The separated pure diastereomers of each of the compounds underwent reaction with lithium naphthalenide to afford optically pure cyclohexyl(o-methoxyphenyl)phosphine-borane and t-butyl(o-methoxyphenyl)phosphine-borane, respectively. These secondary phosphine-boranes reacted readily with various electrophiles in the presence of bases with virtually net retention of configuration. A new chiral phosphine ligand,2-bis[cyclohexyl(o-meth-oxyphenyl)phosphino]ethane was synthesized via the optically pure phosphine-boranes.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/09/20 alle ore 08:24:36