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Best way to form a benzene ring?
I have to start with 1,3-butadiene and ethene to form a benzene ring, what is the best way to do this?
What I have come up with so far is hydrogenating the two alkenes to form butane and ethane and then reforming them to make hexane. From there I would reform the hexane chain into the cyclohexane right and then dehydrogenate that to make the benzene ring if I'm not mistaken, correct?
Problem is that I don't know how to show that last reaction on paper.
1 Answer
- GeorgeSiO2Lv 79 years agoFavorite Answer
Whao! You making this hard work (forming the inert butane and ethane). It is known that Ni(0) catalyzes the trimerization of acetylene to benzene (google) so I would just pass ethylene through a soln of 1,3-butaadiene with a catalytic amount the commercially available Ni(COD)2 (COD = cyclooctadiene). If you want to get real fancy you could use a Grubbs' catalyst (google).