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Ch. 10 - Alkynes: Electrophilic Addition and Redox Reactions
Mullins - Organic Chemistry: A Learner Centered Approach 1st Edition
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Tutti i libri di testoMullins 1st EditionCh. 10 - Alkynes: Electrophilic Addition and Redox ReactionsProblema 41a
Capitolo 9, Problema 41a

Beginning with the molecules on the left of each chemical equation, synthesize the molecules shown. While there can be multiple ways of doing each synthesis, the minimum number of steps necessary is indicated over each reaction arrow.
(a)

Guida verificata passo dopo passo
1
Step 1: Perform a nucleophilic substitution reaction to replace the bromine atom with a hydroxyl group (-OH). This can be achieved using aqueous sodium hydroxide (NaOH) or another suitable nucleophile under appropriate conditions.
Step 2: Protect the hydroxyl group if necessary to prevent side reactions in subsequent steps. This can be done by converting the hydroxyl group into a protecting group, such as a silyl ether.
Step 3: Introduce the methyl group (-CH3) at the appropriate position using a methylating agent, such as methyl iodide (CH3I), in the presence of a base like potassium carbonate (K2CO3). Ensure regioselectivity to place the methyl group correctly.
Step 4: If a protecting group was used in Step 2, remove the protecting group to regenerate the hydroxyl group. This can be done using mild acidic or basic conditions, depending on the protecting group used.
Step 5: Verify the stereochemistry and functional group placement to ensure the final product matches the target molecule. Adjust reaction conditions if necessary to achieve the desired configuration.

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Pratica correlata
Domanda del libro di testo

For each of the following ketones/aldehydes, indicate whether it is possible to synthesize it from an alkyne as the only compound in good (> 50%) yield. If so, how would you do it?

(d)

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Domanda del libro di testo

When doing synthesis, you will often find yourself repeating the same series of steps. To see this in action, synthesize the following aldehydes beginning with an organic molecule containing three carbons or fewer.

(b)

1009
views
Domanda del libro di testo

Beginning with the molecules on the left of each chemical equation, synthesize the molecules shown. While there can be multiple ways of doing each synthesis, the minimum number of steps necessary is indicated over each reaction arrow.

(c)

776
views
Domanda del libro di testo

Beginning with the molecules on the left of each chemical equation, synthesize the molecules shown. While there can be multiple ways of doing each synthesis, the minimum number of steps necessary is indicated over each reaction arrow.

(b)

1004
views
Domanda del libro di testo

When doing synthesis, you will often find yourself repeating the same series of steps. To see this in action, synthesize the following aldehydes beginning with an organic molecule containing three carbons or fewer.

(d)

708
views
Domanda del libro di testo

Name the following alkynes according to the IUPAC rules of nomenclature.

(b)

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