Chapter 21: 19P (page 817)
Draw the products (including stereoisomers) formed when benzaldehyde (C6H5CHO) is treated with each Wittig reagent
a.
b.
Short Answer
a.
b.
c.
Step by step solution
Wittig reaction
The reaction of the carbonyl compound with the Wittig reagent leads to the formation of substituted alkene.
Product formation
a.
The reaction of benzaldehyde with the given reagent results in the formation of (Z)-but-1-enylbenzene and (E)-but-1-enylbenzene.
The reaction is shown below:
Product formation in a
b.
The reaction of benzaldehyde with the given reagent results in the formation of (E)-1,2-diphenylethene and (Z)-1,2-diphenylethene.
The reaction is shown below:
Product formation in b
c.
The reaction of benzaldehyde with the given reagent results in the formation of (Z)-methyl 3-phenylacrylate and methyl cinnamate.
The reaction is shown below:
Product formation in c
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