Title

Lithiation/electrophilic quench sequence of "benzylic" position of (η5-methylcyclohexadienyl)Mn(CO)3 complexes

Document Type

Article

Publication Date

10-25-2010

Abstract

[(η6-Pentamethylbenzene)Mn(CO)3] +BF4- 1 and [(η6-1,2,4,5- tetramethylbenzene)Mn(CO)3]+BF4- 2 complexes were prepared and reacted with nucleophiles to provide neutral exo-substituted (η5-polymethylcyclohexadienyl)Mn(CO)3 complexes 3-6. To study the regioselectivity of the deprotonation at a "benzylic" position of (η5-methylcyclohexadienyl)Mn(CO) 3 complexes, compounds 3-6 were submitted to a lithiation/ electrophilic quench sequence, and functionalized complexes 9-18 were obtained in good yields and with a total regioselectivity. A second sequence gave rise to the formation of unprecedented bifunctionalized (η5-1,2,4,5- tetramethylcyclohexadienyl)Mn(CO)3 and (η5- pentamethylcyclohexadienyl)Mn(CO)3 complexes 19-22. © 2010 American Chemical Society.

Publication Source (Journal or Book title)

Organometallics

First Page

4643

Last Page

4646

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