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.
['Braunschweig|Holger|H|', 'Ye|Qing|Q|', 'Celik|Mehmet Ali|MA|', 'Dewhurst|Rian D|RD|', 'Radacki|Krzysztof|K|']
iron boracycles boron carbon monoxide cyclization reactions