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Chapter 29: Q5. (page 1157)

What α- halo carbonyl compoundis needed to synthesize each amino acid?

(a) Glycine

(b) Isoleucine

(c) Phenylalanine

Short Answer

Expert verified

(a)

(b)


(c)

Step by step solution

01

α- halo carbonyl compound

α- halo carbonyl compounds are compounds that contain keto-group. α-halogensubstitute in a carbonyl group. acts as alkylating agents.

02

Amino acids

Amino acids are classified as organic molecules that are accountable for protein formation when combined. It has carbonyl (acidic) and amino (basic) groups with a side (-R) chain.

03

Reaction

(a) When bromoacetic acid is treated with in excess amount, it forms glycine

Formation of glycine

(c) When 6-bromohexanoic acid is treated with in excess amount, it forms phenylalanine.

Formation of phenylalanine.

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Most popular questions from this chapter

Which of the following amino acids are typically found in the interior of a globular protein, and which are typically found on the surface: (a)phenylalanine; (b)aspartic acid; (c) lysine; (d) isoleucine; (e) arginine; (f) glutamic acid?

The fibroin proteins found in silk fibers consist of large regions of β-pleated sheets stacked one on top of another. (a) Explain why having a glycine at every other residue allows the β-pleated sheets to stack on top of each other. (b) Why are silk fibers insoluble in water?

What alkyl halide is needed to synthesize each amino acid from diethyl acetamidomalonate: (a)Asn; (b)His; (c)Trp?

As shown in Mechanism 29.2, the final steps in the Edman degradation result in rearrangement of a thiazolinone to an N-phenylthiohydantoin. Draw a stepwise mechanism for this acid-catalyzed reaction.

Devise a stepwise synthesis of the tripeptide Val-leu-Val from 3-methylbutanal[CH32CHCH2CHO] as the only organic starting material. You may also use any required inorganic or organic reagents.
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