Carbohydrates
Carbohydrates are the organic compounds that are obtained in foods and living matters in the shape of sugars, cellulose, and starch. The general formula of carbohydrates is Cn(H2O)2. The ratio of H and O present in carbohydrates is identical to water.
Starch
Starch is a polysaccharide carbohydrate that belongs to the category of polysaccharide carbohydrates.
Mutarotation
The rotation of a particular structure of the chiral compound because of the epimerization is called mutarotation. It is the repercussion of the ring chain tautomerism. In terms of glucose, this can be defined as the modification in the equilibrium of the α- and β- glucose anomers upon its dissolution in the solvent water. This process is usually seen in the chemistry of carbohydrates.
L Sugar
A chemical compound that is represented with a molecular formula C6H12O6 is called L-(-) sugar. At the carbon’s 5th position, the hydroxyl group is placed to the compound’s left and therefore the sugar is represented as L(-)-sugar. It is capable of rotating the polarized light’s plane in the direction anticlockwise. L isomers are one of the 2 isomers formed by the configurational stereochemistry of the carbohydrates.
![**Transcription: Reaction of Alkynes with Methyllithium**
**Reaction Overview:**
The chemical reaction in question involves an alkyne (a hydrocarbon with a carbon-carbon triple bond), shown as a linear molecule with the formula \[ C \equiv C - H \], reacting with methyllithium \[ \text{MeLi} \].
**Chemical Equation:**
\[ \text{Alkyne (RC}\equiv\text{CH)} + \text{MeLi} \rightarrow\]
**Multiple Choice Options for Reactants and Products:**
1. The Lithium cation forms a covalent bond to the alkyne.
2. CH\(_4\) and the deprotonated alkyne.
3. MeLi attaches itself to the alkyne.
4. There is no reaction.
**Explanatory Notes:**
- **Methyllithium (MeLi):** An organolithium reagent where the \[ \text{Me} \] represents a methyl group \[ \text{CH}_3 \].
- **Alkyne Reaction Mechanism Consideration:**
- In typical alkyne reactions, the presence of a strong base such as methyllithium can lead to the deprotonation of the terminal alkyne hydrogen. This results in the formation of a carbanion (negatively charged carbon species).
- **Product Prediction:**
- The likely products of this reaction could be methane \[ \text{CH}_4 \] and the deprotonated alkyne anion.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F660d3081-61f2-4ae7-9179-8b93a1ace296%2Fd8ac8a89-0afb-46dd-a7b7-b1cd95e56d9d%2Fglytrs3_processed.png&w=3840&q=75)
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