Lederer Manasse Reaction || Phenol Formaldehyde Reaction || BSc
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- เผยแพร่เมื่อ 10 ก.พ. 2025
- When phenol is treated with 40% aqueous solution of formaldehyde (formalin) in the presence of a dilute acid or alkali at low temperature, a mixture of o-and p-hydroxy benzyl alcohol is formed.
These reactions are the basis of the preparation of phenol formaldehyde resins. These
materials were developed by Backland and are hence called bakelite. They are
thermoplastic solids soluble in many organic solvents. When warmed with hexa
methylene tetramine. (CH2)6N4 , which splits up to formaldehyde and ammonia, further
methylene bridges are formed and a three-dimensional polymer results.
Lederer Manasse Reaction || Phenol Formaldehyde Reaction || BSc #NEET #JEE #cuet #organic #chemistry #chemistryeducation #substitution #reaction #mechanism || Organic chemistry reaction mechanism ||
• Lederer Manasse Reacti...
Viksit Bharat
Gurukul for Chemistry|| JEE mains 2024
Chemical Rxn of R-COOH
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