ORGLIST: Cobalt and Rhodium

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From: alihoyer$##$post.uni2.dk
Date: Wed Jun 09 1999 - 19:55:43 EDT

I consider subjecting an (unconjugated) enyne to Rhodium catalyzed
cyclopropanation with ethyl diazoacetate. As the triple bond of the
enyne suffers attack by the carbenoid thus generated (generating
cyclopropenes in reasonable yields), I have considered protecting the
triple bond as its dicobalt hexacarbonyl complex.
Would anybode expect this to work - or not?
Is Rhodium Acetate compatible with cobalt carbonyls?
Are there any other ways to protect the triple bond of an enyne from
cyclopropanation?

Yours

Thomas Hoyer
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