The major product of the following reaction is
The major product of the following reaction is
Show Hint
Hemiacetal: Same carbon with alcohol group and −OR group.
Acetal: Same carbon with two −OR groups.
In the reaction, the double bond is replaced with −OCH2R group.
- a hemiacetal
- an acetal
- an ether
- an ester
The Correct Option is B
Solution and Explanation
The major product of the following reaction is RCH OH H anhydrous is acetal.
- The Initial reactant has an oxygen atom with two lone pairs.
- One lone pair from oxygen transfers to adjacent carbon, forming a double bond.
- As the reaction takes place in an acidic environment, H+ is attracted to the double bond.
- This creates a negative charge on the nearby carbon.
- Reactant HOCH2R also has an oxygen atom with two lone pairs.
- Lone pair on oxygen acts as a nucleophile, attacking the negatively charged carbon.
- A nucleophilic attack forms a new bond, attaching the −OCH2R group to the carbon.
Read more from the Chapter: Hydrocarbons
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Concepts Used:
Haloalkanes and Haloarenes - Chemical Reactions
Chemical Reactions go with the breaking and bonding of covalent bonds which involve of exchange of electrons. The functional groups of Organic compounds play a consequential role in the process. Based on the above theory, reactions can be classified into five main groups:
Rearrangement Reactions are the type of reactions in which products get formed simply by the rearrangement of atoms and electrons in the reactant molecules.
O
||
NH4CNO → NH2 –C – NH2
Substitution Reactions are the reactions in which an atom or group of atoms is replaced by some other atom or group of atoms without any change in the structure of the remaining part of the molecule.
CH3Br + KOH (aqueous) → CH3OH + KBr
Addition Reactions are the reactions in which products get formed by the addition of some reagent to an unsaturated compound.
CH2 = CH2 + HCl → CH5Cl
- Electrophilic Addition Reactions
- Nucleophilic Addition Reactions
- Free Radical Addition Reactions
Elimination Reactions are the reactions in which the products get formed by the loss of simple molecules like HX from the reactant molecules.
C2H5OH → C2H4
- EN1 (Nucleophilic Elimination Unimolecular)
- EN2 (Nucleophilic Elimination Bimolecular)
A polymerization Reaction is the union of two or more molecules of a substance that form a single molecule with higher molecular weight.
n (CH = CH2) → (-CH2 – CH2 -) n