Complete the following two-step reaction sequence by providing a plausible curved-arrow mechanism for each step of the reaction sequence that leads to the formation of the final products. For the first step, you only need to show the mechanism for the conversion of the first equivalent of the starting alcohol. Be sure to draw structures for all key intermediates and major products and show formal charges and electron flow with curved arrows. Each curved arrow must begin from either a bonding pair or lone pair of electrons and point at an atom or the right place of a bond. Show lone pairs of electron if needed. If one lone pair is shown on an atom, the rest of lone pairs on the same atom must be shown as well.
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.
Complete the following two-step reaction sequence by providing a plausible curved-arrow mechanism for each step of the reaction sequence that leads to the formation of the final products. For the first step, you only need to show the mechanism for the conversion of the first equivalent of the starting alcohol.
Be sure to draw structures for all key intermediates and major products and show formal charges and electron flow with curved arrows. Each curved arrow must begin from either a bonding pair or lone pair of electrons and point at an atom or the right place of a bond. Show lone pairs of electron if needed. If one lone pair is shown on an atom, the rest of lone pairs on the same atom must be shown as well.
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