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Help with organic synthesis

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insertwittyname:
For (B) I was thinking of going as the attached image. The only doubt is if tBuOH by virtue of a being a bulky base, prevent Saytzeff dehydrohalogenation and form the desired product? The regioselectivity in the final step just relies on the formation of a conjugated product.

For (C) could we possibly use hydroboration-oxidation to generate a 1° alcohol, and then oxidise that to get the carboxylic acid?

Babcock_Hall:
We generally ask the OP to do the heavy lifting; however, this is an old thread.

Is your bromine atom in the allylic position?

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