Cyclization of a 1,4-diborabutadiene ligand with both atoms of CO.
A 1,4-dibora-1,3-butadiene iron complex was successfully synthesized through the stoichiometric reaction of an iron bis(borylene) complex with diphenylacetylene. This complex was treated with CO and PMe3 , which led to the formation of an unusual six-membered B2 C3 O ylidic ring bound to both the PMe3 group and zerovalent iron center. The reaction is a very rare example of the incorporation of both atoms of CO into a ring system.
Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg (Germany). h.braunschweig@uni-wuerzburg.de.
Holger
H
Braunschweig
Qing
Q
Ye
Mehmet Ali
MA
Celik
Rian D
RD
Dewhurst
Krzysztof
K
Radacki
boracycles; boron; carbon monoxide; cyclization reactions; iron