
(a)
Interpretation : To comprehend the amino acid present in the given structure of dipeptide.
Concept Introduction : Amino acids are organic molecules with -NH2 and −COOH groups bonded on same carbon atom. Here these two
(b)
Interpretation : The name of dipeptide in aspartame should be determined.
Concept Introduction : Amino acids are organic molecules with -NH2 and −COOH groups bonded on same carbon atom. Here these two functional groups are involved in the formation of an amide linkage which is called as peptide linkage. Two amino acids combine to form one dipeptide molecule.
(c)
Interpretation : The three letters and one letter abbreviation for the dipeptide in aspartame should be determined.
Concept Introduction : Amino acids are organic molecules with -NH2 and −COOH groups bonded on same carbon atom. Here these two functional groups are involved in the formation of an amide linkage which is called as peptide linkage. Two amino acids combine to form one dipeptide molecule.

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Chapter 18 Solutions
Basic Chemistry
- Answer the following by equation 1. reactio of CH3MgBr with Acetone [CH3COCH3] 2. acetal formation reaction of acetaldehyde [CH3CHO] 3. preparation of ethylmethylether [C2H5OCH3] 4. the acidity of the carboxylic acid depends and affected by the substitutions on the rest of the acid molecule: draw 2 structures of acids to show the different effects on acidity by different subsarrow_forwardConsider the reaction sequence below to answer the following questions: 0 0 0 0 0 1. NaOEt, EtOH H3O* OEt OET 2 PhCH Br heat Ph + EtOH + CO₂ CHh B C A A. The starting material A in this reaction sequence is called a a. ẞ-keto ester b. a-carboethoxy ketone C. malonic ester d. acetoacetic ester B. Conversion of A into B is a type of reaction termed a. an acylation b. an enolation C. d. an alkylation a phenylation f reactionsarrow_forward1. Refer to the compounds below to answer the following questions: CO₂Et 0 C. H O O₂N-CH2-C-CH3 0 OEt || 111 A. Indicate all the acidic hydrogens in Compounds I through IV. IV B. Indicate which hydrogens in Compound II are the most acidic. Explain your answer C. Choose the most acidic compound from Compounds I - IV. Explain your choice.arrow_forward
- Show how you would accomplish the following transformations. More than one step may be required. ow all reagents and all intermediate structures [one ONLY] A. H Br H CH3 NHz CH3 CH3 B. CH3CH2C-Br CH3CH2C-CN CH3 CH3.arrow_forwardShow how you would accomplish the following transformations. More than one step may be required. now all reagents and all intermediate structures [one ONLY] A. H Br H CH3 NHz CH3 CH3 B. CH3CH2C-Br CH3 CH3CH2C-CN CH3arrow_forwardCan I please get help with this?arrow_forward
- C. I, II, III Consider the reaction sequence below to answer the following questions: 0 0 1. NaOEt, EtOH ΕΙΟ OEt 2 Compound X CO₂Et NaOEt, EtOH CO₂Et Br Compound Y A Compound Z A. Compound X, diethyl propanedioate, is more commonly known as a. ethyl acetoacetate acetoacetic ester b. C. oxalic ester d. malonic ester B. Write the complete stepwise mechanism for the conversion of Compound X into Compound Y. Show all electron flow with arrows and draw all intermediate structures.arrow_forwardDiethyl malonate can be prepared by the following reaction sequence. Draw the structures of each of the missing intermediates in the boxes provided EtO 0 H3C 11 C 1. Br₂ PBr OH 2 H₂O 010 0 CH3CH₂OH C CH2 OEt Ha CH3CH2OH на NaCN H₂SO4 NC H₂O, heat CH2 OCH2CH3arrow_forwardShow how you would accomplish each of the following transformations. More than one step may be quired. Show all reagents and all intermediate structures. [three only] A. 0 CH3 B. C. D. H 0 0 OCH 3 CH₂CO₂CH2CH3 H3C ➤ HN C NO₂ Clarrow_forward
- Choose the BEST reagent for carrying out each of the following conversions. A. CO₂CH3 CO₂CH3 0 CO₂H a. LiAlH4, ether C. CrO3, pyridine B. 0 H a. C. NaBH4, ethanol NaOH, H2O CO₂H OH HD b. NaBH4, ethanol d. H₂/Pd CH₂OH b. CH₂PPh3 d. All of the abovearrow_forwardWrite the complete stepwise mechanism for the acid-catalyzed hydrolysis of the following amide to yield mandelic acid. Show all electron flow with arrows and draw the structures of all intermediate species. OH H-OH₂ CnH2 :0: OH C OH + NH4 10: The purpose of the acid catalyst in the hydrolysis of an amide is: to enhance the electrophilicity of the amide carbonyl carbon a. to enhance the nucleophilicity of the water molecule b. C. to enhance the electrophilicity of the water molecule d. to shift the equilibrium of the reactionarrow_forward1.arrow_forward
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