ChemistryChapter 19: Carbonyl Compounds
Acid Derivatives (names)
Ester: from acid + alcohol (last chapter).
Learning objectives
- Explain acid derivatives (names) in simple chemical language.
- Connect 1. chloride and ester with 2. amide using equations, observations, or trends where needed.
- Answer a short Federal Board question with the correct terms and a clear reason.
Definition
Ester: from acid + alcohol (last chapter). Acid chloride RCOCl named (PCl5 / SOCl2 on acid) — fumes, not a manufacture SOP. Amide named (from acid chloride + ammonia school, or ammonium carboxylate heat). Anhydride named if the book has it. Meaning: the carboxyl carbon still wants Nu; derivatives are more or less reactive (chloride > anhydride > ester > amide school order). No drug-amide synthesis. Acyl chloride, anhydride, ester, amide — all from COOH; reactivity order acyl chloride most. Tollens distinguishes aldehyde from ketone; iodoform targets methyl carbonyl or ethanol specifically.
Important terms
- ACID DERIVATIVES (NAMES)
- Ester: from acid + alcohol (last chapter).
- 1. CHLORIDE AND ESTER
- RCOOH + PCl5 -> RCOCl named.
- 2. AMIDE
- RCONH2.
Overview
Make the derivative, then hydrolyse:
Chloride and Ester
RCOOH + PCl5 -> RCOCl named. Ester as before. Acid chlorides + water: vigorous back to acid (named). Amide least reactive; ester for flavours and polymers link.
Examples PCl5 named · Ethyl ethanoate · Not a plant
Amide
RCONH2. Nylon is a polyamide named (polymer slogan, not a fibre-plant). Hydrolyse amides with acid or alkali named, slower than esters often. Name only at school — mechanism optional enrichment.
Examples Ethanamide named · Nylon named · No pharma route
WHAT — ACID DERIVATIVES (NAMES)
Ester: from acid + alcohol (last chapter). Acid chloride RCOCl named (PCl5 / SOCl2 on acid) — fumes, not a manufacture SOP. Amide named (from acid chloride + ammonia school, or ammonium carboxylate heat). Anhydride named if the book has it. Meaning: the carboxyl carbon still wants Nu; derivatives are more or less reactive (chloride > anhydride > ester > amide school order). No drug-amide synthesis. Acyl chloride, anhydride, ester, amide — all from COOH; reactivity order acyl chloride most. Tollens distinguishes aldehyde from ketone; iodoform targets methyl carbonyl or ethanol specifically.
WHY — Why this topic matters
ACID DERIVATIVES (NAMES) is an independent FBISE learning unit because students must use its definitions, conditions, equations, or trends separately in explanations and calculations.
HOW — How it works
CHLORIDE AND ESTER: RCOOH + PCl5 -> RCOCl named. Ester as before. Acid chlorides + water: vigorous back to acid (named). Amide least reactive; ester for flavours and polymers link. Examples: PCl5 named; Ethyl ethanoate; Not a plant. AMIDE: RCONH2. Nylon is a polyamide named (polymer slogan, not a fibre-plant). Hydrolyse amides with acid or alkali named, slower than esters often. Name only at school — mechanism optional enrichment. Examples: Ethanamide named; Nylon named; No pharma route. Exam reactivity order (school): acid chloride > anhydride > ester > amide towards nucleophiles / hydrolysis names, not a synthesis lab for drugs
In simple words
Named derivatives. No acid-chloride plant, no drug amides.
Key points
- chloride most reactive named
- ester from acid + alcohol
- reactive C=O
- N attached to C=O
Exam preparation
Exam Focus
Quick revision
Revision Zone
Review the key facts, formulas and checks before you move on.Acid Derivatives (names)
Sticky Notes · Quick Revision
Core Idea
- Ester: from acid + alcohol (last chapter). Acid chloride RCOCl named (PCl5 / SOCl2 on acid) — fumes, not a manufacture SOP. Amide named (from acid chloride + ammonia school, or ammonium carboxylate heat). Anhydride named if the book has it. Meaning: the carboxyl carbon still wants Nu; derivatives are more or less reactive (chloride > anhydride > ester > amide school order). No drug-amide synthesis. Acyl chloride, anhydride, ester, amide — all from COOH; reactivity order acyl chloride most. Tollens distinguishes aldehyde from ketone; iodoform targets methyl carbonyl or ethanol specifically.
1. CHLORIDE AND ESTER
- RCOOH + PCl5 -> RCOCl named. Ester as before. Acid chlorides + water: vigorous back to acid (named). Amide least reactive; ester for flavours and polymers link.
- PCl5 named
- Ethyl ethanoate
- Not a plant
2. AMIDE
- RCONH2. Nylon is a polyamide named (polymer slogan, not a fibre-plant). Hydrolyse amides with acid or alkali named, slower than esters often. Name only at school — mechanism optional enrichment.
- Ethanamide named
- Nylon named
- No pharma route
Exam Example
- Exam reactivity order (school):
- acid chloride > anhydride > ester > amide
- towards nucleophiles / hydrolysis
- names, not a synthesis lab for drugs
Common Misconceptions
- Do not confuse 1. CHLORIDE AND ESTER with 2. AMIDE; state the difference before giving an example.
- Writing only “chloride most reactive named” is not enough. Explain what it means in a complete sentence.
FBISE Exam Check
- Explain acid derivatives (names), compare its two main parts, and include the correct chemical evidence.
- Named derivatives. No acid-chloride plant, no drug amides.
60-second revision
- Ester: from acid + alcohol (last chapter).
- 1. CHLORIDE AND ESTER: RCOOH + PCl5 -> RCOCl named.
- 2. AMIDE: RCONH2.
- Exam reminder: Exam reactivity order (school): acid chloride > anhydride > ester > amide towards nucleophiles / hydrolysis names, not a synthesis lab for drugs
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