Specific alkylidene coupling of the labile diruthenium bridging
methylene complex
[(η-C5H5)2Ru2(µ-CH
2)(CO)2(MeCN)] with diazoalkanes
(N2![[double bond, length as m-dash]](https://www.rsc.org/images/entities/char_e001.gif)
CR2) giving alkenic products
Abstract
Reaction of the labile diruthenium bridging methylene complex
[(η-C
5
H
5
)
2
Ru
2
(µ-CH
2
)(µ-CO)(CO)(MeCN)] with diazoalkanes
(N
2
CR
1
R
2
) results in specific
C–C coupling to give alkenic products, i.e. the bridging
alkenyl complex
[(η-C
5
H
5
)
2
Ru
2
(µ-CH
CHR
1
)(µ-H)(CO)
2
] (R
2
= H) or
alkene CH
2
CR
1
R
2
(R
1
,
R
2
≠ H).
CR
1
R
2
) results in specific
C–C coupling to give alkenic products, i.e. the bridging
alkenyl complex
[(η-C
5
H
5
)
2
Ru
2
(µ-CH
CHR
1
)(µ-H)(CO)
2
] (R
2
= H) or
alkene CH
2
CR
1
R
2
(R
1
,
R
2
≠ H).
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![[double bond, length as m-dash]](https://www.rsc.org/images/entities/h2_char_e001.gif)
CR2) giving alkenic products
