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Chapter 26: Q 7. (page 1057)

Draw the coupling product formed when each pair of compounds is treated with Pd(OAc)2, P(o-tolyl)3, and Et3N.

Short Answer

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Answer

a.

b.

c.

d.

Step by step solution

01

Heck reaction

The organic reaction involving the coupling of an aryl or vinyl halide with an alkene catalyzed by palladium to form an alkene with a new C-C bond is known as the ‘Heck reaction.’

The reaction occur in the presence of a catalyst such as palladium (II), acetate in the presence of triaryl phosphine, and a base such as triethylamine.

02

Products

The following products are formed in the given reactions:

a.

Coupling product of a.

b.

Coupling product of b.

c.

Coupling product of c.

d.

Coupling product of d.

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Most popular questions from this chapter

What product is formed by ring-closing metathesis of compound V, a key intermediate in the synthesis of ingenol, a natural product mentioned in the chapter opener?

Draw the product of each reaction.

Devise a synthesis of each compound using a Heck reaction as one step. You may use benzene, CH2=CHCO2Et, organic alcohols having two carbons or fewer and any required inorganic reagents.

a.

b.

Draw the product formed from the ring-closing metathesis of each compound. Then, devise a synthesis of each metathesis starting material from benzene, alcohols with less than five carbons, and any needed organic and inorganic reagents.

a.

b.

Draw the structure of the two products of molecular formulaC15H26O2 formed when M is treated with Grubbs catalyst under high-dilution conditions.
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