Remember that not all nucleophiles will successfully undergo Michael additions-you must bear
this in mind when making a 1,3-disconnection of this type. Most reliable are those based on nitro-
gen, sulfur, and oxygen (Chapter 1D).
Qur second example is an amine structurally similar to the `deadly nightshade' drug, atropine,
which has the ability to calm involuntary muscle movements.'fhere is a 1,3一relationship between the
amine and ketone functional groups, and 1,3-disconnection takes us back to piperidine and an
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