Phosphepines: convenient access to phosphinidene complexes.
Reaction of o-diethynylbenzene with transition metal-complexed primary phosphines gives in a single base-induced step stable phosphepine complexes as confirmed by X-ray data. At 75-80 degrees C these phosphepines undergo clean cheletropic elimination of naphthalene to give transient carbene-like phosphinidene complexes that can be trapped in high yield by alkenes, alkynes, and alcohols.
Borst
Mark L G
ML
Department of Organic Chemistry, Faculty of Sciences, Vrije Universiteit, De Boelelaan 1083, NL-1081 HV Amsterdam, The Netherlands.
Bulo
Rosa E
RE
Winkel
Christiaan W
CW
Gibney
Danièle J
DJ
Ehlers
Andreas W
AW
Schakel
Marius
M
Lutz
Martin
M
Spek
Anthony L
AL
Lammertsma
Koop
K