1a
3 marks
3 marksKetones are useful starting compounds in organic synthesis.
This question is about butanone.
The mass spectrum of butanone has significant peaks at m/ z = 43 and at m/ z = 57.
i)
Give the structures of the species responsible for these two peaks.
(2)
ii)
Give the structure of one other species that you would expect to produce a peak at a different m/ z value in the mass spectrum of butanone.
(1)
1b4 marks
Devise a reaction scheme to prepare propan-1-ol from butanone, using no more than four steps.
Identify the reagents and essential conditions for each step and give the name or structure of each of the intermediate compounds.
1c5 marks
Devise a reaction scheme to prepare 2-methylbut-2-ene from butanone, using no more than four steps.
Identify the reagents and essential conditions for each step and give the name or structure of each of the intermediate compounds.
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