Chapter 21: 17P (page 817)
Draw the products of the following Wittig reactions
a.

b.

Short Answer
a.

b.

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Chapter 21: 17P (page 817)
Draw the products of the following Wittig reactions
a.

b.

a.

b.

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Reaction of 5,5-dimethoxypentan-2-one with methylmagnesium iodide followed by treatment with aqueous acid forms cyclic hemiacetal Y. Draw a stepwise mechanism that illustrates how Y is formed

¶Ù°ù²¹·É t³ó±ð p°ù´Ç»å³Ü³¦³Ù f´Ç°ù³¾±ð»å w³ó±ð²Ô C±á3CH2CH2CH2NH2reacts with each carbonyl compound in the presence of mild acid.
a.

b.

c.

What hydrolysis products are formed when the following compound is treated with aqueous acid?

Draw the structure of the acyclic polyhydroxy aldehyde that cyclizes to each hemiacetal.
a.
What 1° amine and carbonyl compound are needed to prepare each imine?
a.

b.

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