JAVA
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Carbene mechanism with malononitrile
Hello guys,
I just get a practical problem: what happens if malononitrile is reacted with sodium in EtOH, is it right that a carbanion intermediate exists?
If this is true, what reaction mechanism takes place with this pyranone?
Since I suffering for a while about insertion mechanisms and carbene chemistry it seems impossible for me to explain what the product is?
Reaction scheme is given below
Additional background is very welcome!
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UnintentionalChaos
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There is no carbene there. That is a carbanion. A carbene is a charge-neutral carbon species with two substituents and a pair of electrons (whose
configuration can be singlet or triplet). You have a carbanion (a relatively weak one) and an activated alkene.
http://www.organic-chemistry.org/namedreactions/michael-addi...
Department of Redundancy Department - Now with paperwork!
'In organic synthesis, we call decomposition products "crap", however this is not a IUPAC approved nomenclature.' -Nicodem
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solo
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.....just to clarify, this JAVA is not the java of the hive or any other forum.......java is solo here ....i just thought i clarify that since many
know me as java .....solo/java
It's better to die on your feet, than live on your knees....Emiliano Zapata.
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JAVA
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Thank you UnintentionalChaos. It wasn't explained on the university. Then I suppose that this is the mechanism for the 1,4-Michael Addition:
solo: don't mix subjects in scientific discussions, JAVA - solo
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