Addition of allyldiisopinocampheylborane to racemic (dienal)iron complexes, followed by oxidation, affords diastereomeric (1,4,6-trien-3-ol)iron complexes with moderate to low enantioselectivity. The high enantioselectivity typically observed for this allylborane reagent is attenuated by steric interaction between the Fe(CO)3 group and the chiral isopinocampheyl groups. Further diminution of the enantioselectivity is observed for dienal complexes in which one rotomer predominates.
Prahlad, Vadapalli; El-Ahl, Abdel-Aziz S.; and Donaldson, William, "Reaction of tricarbonyl(dienal)iron complexes with B-allyldiisopinocampheylborane" (2000). Chemistry Faculty Research and Publications. 75.
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