Chapter 26: Q 1. (page 1051)
Draw the product of each coupling reaction.
a.

b.

c.

d.

Short Answer
Answer

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Chapter 26: Q 1. (page 1051)
Draw the product of each coupling reaction.
a.

b.

c.

d.

Answer

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What starting material is needed to synthesize each compound by a ring-closing metathesis reaction?
a.

b.

c.

The reaction of cyclohexene with iodo-benzene under Heck conditions forms E, a coupling product with the new phenyl group on the allylic carbon, but none of the 鈥渆xpected鈥 coupling product F with the phenyl group bonded directly to the carbon鈥揷arbon double bond.
a. Draw a stepwise mechanism that illustrates how E is formed.
b. Step [2] in Mechanism 26.2 proceeds with syn addition of Pd and R' to the double bond.What does the formation of E suggest about the stereochemistry of the elimination reaction depicted in Step [3] of Mechanism 26.2?

What product is formed in the Suzuki coupling of A and B? This reaction was a key step in the synthesis of losartan, a drug used to treat hypertension.

Draw the coupling product formed when each pair of compounds is treated with , , and .

Synthesize each product from the given starting materials using an organocuprate coupling reaction.

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