Synthesis of unprotected and borane-protected cyclic phosphines using Ru- and Mo-based olefin metathesis catalysts

Ru- and Mo-based catalysts can be used in ring closing metathesis (RCM) reactions to synthesise cyclic phosphines protected as their borane complexes. The compatibility of the Schrock Mo-catalyst and the N-heterocyclic carbene Ru- catalysts with this class of substrates is particularly noteworthy as...

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Published inOrganic & biomolecular chemistry Vol. 1; no. 21; pp. 3820 - 3825
Main Authors Slinn, CA, Redgrave, AJ, Hind, SL, Edlin, C, Nolan, SP, Gouverneur
Format Journal Article
LanguageEnglish
Published CAMBRIDGE Royal Soc Chemistry 07.11.2003
Subjects
Chemistry
Chemistry, Organic
Physical Sciences
Science & Technology
RING-CLOSING METATHESIS
MOLYBDENUM
ACYCLIC OLEFINS
CARBENES
COMPLEXES
ENANTIOSELECTIVE HYDROGENATION REACTIONS
IMIDAZOLIN-2-YLIDENE LIGANDS
TUNGSTEN
C2-SYMMETRICAL BIS(PHOSPHOLANES)
RUCL2(=CHR)(PR)
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Summary:Ru- and Mo-based catalysts can be used in ring closing metathesis (RCM) reactions to synthesise cyclic phosphines protected as their borane complexes. The compatibility of the Schrock Mo-catalyst and the N-heterocyclic carbene Ru- catalysts with this class of substrates is particularly noteworthy as asymmetric RCM (ARCM) is now emerging as a new tool for the preparation of homochiral phosphines. One of the key results is that the Mo-catalyst allows the ring closure of the unprotected diallylphenylphosphine with 95% conversion.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:1477-0520
1477-0539
DOI:10.1039/b306940k