(a)
Interpretation:
Phe-Leu-Val-Phe and Ala-Val-Leu-Ile was synthesized using Merrifield synthesis and the steps used for the synthesis has to be identified.
Concept introduction:
Peptides can be synthesized in more yield by using the method developed by R. Bruce Merrifield. A peptide containing a large number of amino acid residue can be synthesized easily by this method. The coupling of the amino acid residues are done without purification. The key steps involved in Merrifield Synthesis are,
- Attachment of Boc-protected residue to
polymer . - Removal of Boc Protecting group.
- Coupling with another Boc-protected amino acid using DCC.
- For each amino acid that is added to the growing peptide chain removal of Boc and coupling is done.
- Removal of Boc and detachment of peptide from the polymer.
To identify: To identify all the steps used to prepare Phe-Leu-Val-Phe via Merrifield synthesis.
(b)
Interpretation:
Phe-Leu-Val-Phe and Ala-Val-Leu-Ile was synthesized using Merrifield synthesis and the steps used for the synthesis has to be identified.
Concept introduction:
Peptides can be synthesized in more yield by using the method developed by R. Bruce Merrifield. A peptide containing a large number of amino acid residue can be synthesized easily by this method. The coupling of the amino acid residues are done without purification. The key steps involved in Merrifield Synthesis are,
- Attachment of Boc-protected residue to polymer.
- Removal of Boc Protecting group.
- Coupling with another Boc-protected amino acid using DCC.
- For each amino acid that is added to the growing peptide chain removal of Boc and coupling is done.
- Removal of Boc and detachment of peptide from the polymer.
To identify: To identify all the steps used to prepare Ala-Val-Leu-Ile via Merrifield synthesis.
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Chapter 25 Solutions
ORGANIC CHEMISTRY 3E WPNGC LL SET 1S
- Identify the missing organic reactants in the following reaction: X + Y H+ two steps Note: This chemical equation only focuses on the important organic molecules in the reaction. Additional inorganic or small-molecule reactants or products (like H2O) are not shown. In the drawing area below, draw the skeletal ("line") structures of the missing organic reactants X and Y. You may draw the structures in any arrangement that you like, so long as they aren't touching. Click and drag to start drawing a structure. Х :arrow_forwardDraw the mechanism of friedel-crafts acylation using acetyl chloride of m-Xylenearrow_forwardI need help naming these in IUPACarrow_forward
- H R Part: 1/2 :CI: is a/an electrophile Part 2 of 2 Draw the skeletal structure of the product(s) for the Lewis acid-base reaction. Include lone pairs and formal charges (if applicable) on the structures. 4-7: H ö- H Skip Part Check X :C1: $ % L Fi Click and drag to start drawing a structure. MacBook Pro & ㅁ x G 0: P Add or increase positive formal cha Save For Later Submit ©2025 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Centearrow_forwardDraw the friedel-crafts acylation mechanism of m-Xylenearrow_forwardDon't used hand raiting and don't used Ai solutionarrow_forward
- 1. Base on this experimental results, how do you know that the product which you are turning in is methyl 3-nitrobenzoate(meta substituted product ) rather than either of the other two products? 2. What observation suggests that at least a small amount of one or both of the other two isomers are in the mother liquor?arrow_forwardExplain Huckel's rule.arrow_forwardhere is my question can u help me please!arrow_forward
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