Q8(b)(i). Periodic acid cleavage of an aldohexose
Explain how many molecules of formaldehyde and formic acid are formed in the reaction.
Model answer
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Coverscyclic periodate esterinternal CHOHterminal CHOterminal CH₂OHfour CHOH carbons
All parts of Question 8
- 8(a)(i) Cyclopentadiene + β-nitrostyrene; Nef reaction of the adduct10 marks
- 8(a)(ii) Photocyclisation of cyclodecanone to 9-decalol10 marks
- 8(a)(iii) Norrish type II reaction of 2-benzoylnorbornane10 marks
- 8(b)(i) Periodic acid cleavage of an aldohexose5 marks
- 8(b)(ii) Baeyer–Villiger oxidation of camphor5 marks