Why is it that when alpha cleavage is being done on the right structure, the squiggly line is put on the top carbon? Why not in the same position as the first structure?
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.
Why is it that when alpha cleavage is being done on the right structure, the squiggly line is put on the top carbon? Why not in the same position as the first structure?
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alpha-
cleavage
:
loss of CH₂CH₂
CH₂
+
=CH₂} {^~^
m/z 101
12-11 2,6-Dimethylheptan-4-ol. CoHoo has molecular weight 144 The highest mass pools at 126
alpha-
cleavage
H
m/z 87
loss of CH3
E-}](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc061ccfc-c5c1-460b-8498-b5bc9ae72844%2Fca25763e-c45b-4e51-a28b-3239a252c36b%2F3suyxuk_processed.png&w=3840&q=75)
If you do the same for the same position as the first structure you may get the same structure as both will give same structure and generally α-cleavage is performed based on two main conditions that are
1. Bulky radicals are preferred.
2. Stability of carbonation
So in both case carbonation is stabilized by mesomeric effect (+M) of oxygen and in 2nd molecule both +M of oxygen and hyperconjugation of 3α-H of CH3.
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