Neutral Amino Acids
Amino acids which do not have any charge on them are neutral amino acids.
Globular Protein
The globular proteins refer to the shape of protein specifically spherical in nature apart from spherical form fibrous, disordered and membrane-bound proteins exist. These globular proteins are miscible in water and form a colloidal solution rather than other types which might not exhibit solubility. Many classes of the fold are found in globular proteins, which render them a sphere shape. Globular fold containing proteins usually are referred to by the term globin.
Dimer
Dimers are basic organic compounds, which are derivates of oligomers. It is formed by the combination of two monomers which could potentially be strong or weak and in most cases covalent or intermolecular in nature. Identical monomers are called homodimer, the non-identical dimers are called heterodimer. The method by which dimers are formed is known as “dimerization”.
Dipeptide
A dipeptide is considered a mixture of two distinct amino acids. Since the amino acids are distinct, based on their composition, two dipeptide's isomers can be produced. Various dipeptides are biologically essential and are therefore crucial to industry.
Which of the compounds shown below would be the major organic product of the reaction shown. (Assume any necessary work-up steps have been completed).
![The image describes a chemical reaction problem involving a starting compound and a reagent, (CH₃)₂CuLi, with four possible product options labeled A, B, C, and D.
**Starting Material:**
- 3-(2-chlorophenyl)-2-propen-1-one
**Reagent:**
- (CH₃)₂CuLi (a Gilman reagent)
**Possible Products:**
- **Option A:** 1-(2-acetylphenyl)-ethanone
- **Option B:** 1,3-bis(2-hydroxy-2-methylpropyl)benzene
- **Option C:** 3-(2-hydroxyphenyl)butan-2-one
- **Option D:** 1-(2-buta-1,3-dienyl)phenylethanone
The reaction likely involves organocopper chemistry, where the Cl group in the starting ketone might be replaced, and an alkyl group can add to the conjugated system.
Note the structural aspects of each option:
- **A and D** represent possible outcomes of acyl substitution.
- **B** seems unlikely due to additional hydroxyl groups and larger structural changes.
- **C** could result from an addition at the double bond followed by ketone retention.
This setup challenges understanding of nucleophilic acyl substitutions and handling of organometallic reagents.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc9e11771-e4e3-464c-a598-db4b5bc10f45%2F70a103e2-5da1-4096-9aea-f55df418cb11%2Fbsyhopr_processed.jpeg&w=3840&q=75)
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