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Home Q & A Board Science-Related Homework Help Chemistry Organic Chemistry
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jack103106 jack103106
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Question 1.

What is the structure of the amino acid produced from the reaction sequence shown?

An illustration shows an incomplete chemical reaction in which the reactant reacts in presence of the following compounds as shown in two forward arrows. The reactant has a five-carbon chain, in which C 1 is double bonded to an oxygen atom and single bonded to a hydroxyl group, O H. C 2 is bonded to N H A c and C 4 is bonded to a methyl group. C 2 is double bonded to C 3. The first arrow has hydrogen H 2 and (R)-(minus)R u(B I N A P)C l 2 placed above the arrow. The second arrow has sodium hydroxide, N a O H and water molecule, H 2 O above the arrow and hydronium ion, that has a SMILES string of [OH3+] below the arrow.

An illustration shows the bond-line structure of five compounds. The first compound labeled one (Roman numeral) has a five-carbon chain, in which C 1 is double bonded to an oxygen atom and single bonded to a hydroxyl group, O H. C 2 is wedge bonded to an N H 2 group and C 4 is bonded to a methyl group. The second compound labeled two (Roman numeral) has a five-carbon chain, in which C 1 is double bonded to an oxygen atom and single bonded to a hydroxyl group, O H. C 2 is wedge bonded to an N H 2 group and C 4 is bonded to a methyl group. C 2 is double bonded to C 3. The third compound labeled three (Roman numeral) has a five-carbon chain, in which C 1 is double bonded to an oxygen atom and single bonded to a hydroxyl group, O H. C 2 is wedge bonded to an N H 2 group and C 4 is bonded to a methyl group. C 1 is double bonded to C 2. The fourth compound labeled four (Roman numeral) has a five-carbon chain, in which C 1 is double bonded to an oxygen atom and single bonded to a hydroxyl group, O H. C 3 is wedge bonded to an N H 2 group and C 4 is bonded to a methyl group. The fifth compound labeled fifth (Roman numeral) has a five-carbon chain, in which C 1 is double bonded to an oxygen atom and single bonded to a hydroxyl group, O H. C 4 is bonded to an N H 2 group.


▸ I

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▸ III

▸ IV

▸ V

Question 2.

Which of the choices is a correct bond-line structure for the tripeptide Val-Asp-Ala?

The bond-line structure of a compound labeled one (Roman numeral) has a SMILES string of CC(C)C[C@@H](C(=O)N[C@@H](CC(=O)O)C(=O)N[C@@H](C(C)C)C(=O)O)N.
The bond-line structure of a compound labeled two (Roman numeral) has a SMILES string of CC(C)CC(C(=O)NC(CC(=O)N)C(=O)NC(C(C)C)C(=O)O)N.
The bond-line structure of a compound labeled three (Roman numeral) has a SMILES string of CC(C)C(C(=O)NC(CC(=O)O)C(=O)NC(C)C(=O)O)N.
The bond-line structure of a compound labeled four (Roman numeral) has a SMILES string of CCC(C)C(C(=O)NC(CC(=O)O)C(=O)NC(C)C(=O)O)N.


▸ I

▸ II

▸ III

▸ IV

▸ none of these
Textbook 
Organic Chemistry

Organic Chemistry


Edition: 4th
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