Problem 6.5

a) Write down the prefered pathways of radical loss for the following molecular ions.

Which cleavages are preferred?

b) The McLafferty rearrangement is one of the important pathways of alkene loss from molecular ions. Write down its mechanism for butanal molecular ion.

c) Decide which of the following molecular ion can undergo McLafferty rearrangement. Even two pathways might occur for one ionic species.

Which products are formed by McL?

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