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Asked Nov 12, 2019
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4. using retrosynthetic analysis, determine which compounds could lead to the alkene shows below in a single step 

CHM-120
4. Using retrosynthetic analysis, determine which compound(s) could lead to the alkene shown
below in a single step.
Fall 2019
Br
IV
(a)I
(d) IV
(b) I
(e) I and IV
(c) II
(f) none are correct
5. Perform a retrosynthetic analysis by working backwards two steps in the synthesis belo-
and B that could lead to the alkene (C).
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CHM-120 4. Using retrosynthetic analysis, determine which compound(s) could lead to the alkene shown below in a single step. Fall 2019 Br IV (a)I (d) IV (b) I (e) I and IV (c) II (f) none are correct 5. Perform a retrosynthetic analysis by working backwards two steps in the synthesis belo- and B that could lead to the alkene (C).

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Expert Answer

Step 1

Potassium tert-butoxide can carry out elimination to give least substituted alkene. So the product is

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OK Br

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Step 2

In the presence of Lindlar’s catalyst and H2...

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H2 Lindlar's catalyst

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