[(6-CH3-η5-2-sil-C6H4)Fe(CO)3]BF4
(sil =
Si(OCH2CH2)3N) has been
prepared and its reaction
with stabilized carbanions studied. Carbanions such
as
-CH2CN,
-CH(Me)CN,
-CMe2CN, and
-CH2CO2
t
Bu
attack the carbonyl carbon to yield acyl derivatives, and
-C(H)PhCN and -CPh2CN
add to the dienyl ring to give
diene derivatives.