Synthesis of endo,endo-2,5-bis((diphenylphosphino)methyl)bicyclo(2. 2. 1)heptane, a chelating diphosphine with a natural bite angle of 120 degree
Journal Article
·
· Journal of Organic Chemistry; (United States)
- Univ. of Wisconsin, Madison (United States)
One of the key intermediates in rhodium-catalyzed hydroformylation reactions is a trigonal-bipyramidal rhodium diphosphine species. The two phosphines in (R{sub 3}P){sub 2}(CO){sub 2}RhH have the possibility of occupying two axial, two equatorial, or one axial and one equatorial position. Use of chelating ligands such as DIPHOS, which has a preferred bite angle (P-M-P) of about 90{degree} allows study of locked axial, equatorial diphosphine catalysts. Because of the authors' interest in hydroformylation, they have initiated a program to design and synthesize chelating diphosphines which have a constrained bite angle near 120{degree} for selective diequatorial coordination. Here they describe the synthesis and characterization of the racemic diphosphine.
- OSTI ID:
- 5891662
- Journal Information:
- Journal of Organic Chemistry; (United States), Journal Name: Journal of Organic Chemistry; (United States) Journal Issue: 4 Vol. 55:4; ISSN JOCEA; ISSN 0022-3263
- Country of Publication:
- United States
- Language:
- English
Similar Records
Diphosphines with natural bite angles near 120{degrees} increase selectivity for n-aldehyde formation in rhodium-catalyzed hydroformylation
Electronically dissymetric DIPHOS derivatives give higher n:i regioselectivity in rhodium-catalyzed hydroformylation than either of their symmetric counterparts
Pentacoordinate Fe(CO) sub 3 complexes of diphosphine ligands with bite angles greater than 120 degree
Journal Article
·
Wed Jul 01 00:00:00 EDT 1992
· Journal of the American Chemical Society
·
OSTI ID:229928
Electronically dissymetric DIPHOS derivatives give higher n:i regioselectivity in rhodium-catalyzed hydroformylation than either of their symmetric counterparts
Journal Article
·
Tue Jan 12 23:00:00 EST 1999
· Journal of the American Chemical Society
·
OSTI ID:20014094
Pentacoordinate Fe(CO) sub 3 complexes of diphosphine ligands with bite angles greater than 120 degree
Journal Article
·
Wed Sep 05 00:00:00 EDT 1990
· Inorganic Chemistry; (USA)
·
OSTI ID:6171070
Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKANES
ALKENES
CARBONYLATION
CARBOXYLIC ACIDS
CHALCOGENIDES
CHELATING AGENTS
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
COMPLEXES
CYCLOALKANES
CYCLOALKENES
DMSO
FORMIC ACID
HYDROCARBONS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
LIGANDS
MOLECULAR STRUCTURE
MONOCARBOXYLIC ACIDS
NMR SPECTRA
NORBORNADIENE
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PHOSPHINES
PHOSPHORUS COMPOUNDS
RHODIUM COMPLEXES
SPECTRA
SULFOXIDES
SULFURIC ACID
SYNTHESIS
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
400201* -- Chemical & Physicochemical Properties
ALKANES
ALKENES
CARBONYLATION
CARBOXYLIC ACIDS
CHALCOGENIDES
CHELATING AGENTS
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
COMPLEXES
CYCLOALKANES
CYCLOALKENES
DMSO
FORMIC ACID
HYDROCARBONS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
LIGANDS
MOLECULAR STRUCTURE
MONOCARBOXYLIC ACIDS
NMR SPECTRA
NORBORNADIENE
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PHOSPHINES
PHOSPHORUS COMPOUNDS
RHODIUM COMPLEXES
SPECTRA
SULFOXIDES
SULFURIC ACID
SYNTHESIS
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS