What product (s) are expected in the ethoxide-promoted β-elimination reaction of 2-bromo-2,3-dimethylbutane? Omit ions, salts, and ethanol from your response.

Question

Curtis Marquez

Chemistry

18 January, 02:53

What product (s) are expected in the ethoxide-promoted β-elimination reaction of 2-bromo-2,3-dimethylbutane? Omit ions, salts, and ethanol from your response.

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Joey Stone · Answer 1

There are two possible products from this elimination:

-2,3-dimethylbut-1-ene

-2,3-dimethylbut-2-ene

As the base is relatively unhindered, the reaction will form the Saytzeff product as the major product. The Saytzeff product is the most substituted alkene which is more stable due to hyperconjugation. In this reaction the Saytzeff product is 2,3-dimethylbut-2-ene.