바나나 오일(아세트산이소아밀) 합성

바나나 향미를 만드는 에스테르 만들기

Organic Synthesis Advanced (University) 90 분 ~$22.00

목표

아세트산과 이소아밀알코올의 피셔 에스테르화로 아세트산이소아밀(바나나 오일)을 합성하고, 에스테르가 과일 향미를 만드는 원리를 실증한다.

배경

Isoamyl acetate is the ester responsible for the characteristic smell of bananas. It is synthesized by the acid-catalyzed reaction of isoamyl alcohol with acetic acid. This experiment demonstrates ester formation, liquid-liquid extraction, and the connection between molecular structure and sensory properties.

안전 경고

  • Concentrated H₂SO₄ is extremely corrosive
  • Glacial acetic acid causes burns
  • Isoamyl alcohol is flammable
  • Work in a fume hood throughout

필수 개인 보호 장비

goggles gloves lab_coat

재료

  • Isoamyl alcohol (3-methyl-1-butanol) (5 mL)
  • Glacial acetic acid (7 mL)
    Excess
  • Sulfuric acid (H₂SO₄) (1 mL)
    Concentrated, catalyst
  • Sodium bicarbonate solution (50 mL)
    5%
  • Anhydrous sodium sulfate (5 g)
    Drying agent

장비

Round-bottom flask (100 mL) Reflux condenser Heating mantle Separating funnel Boiling chips

실험 절차

1

Add 5 mL isoamyl alcohol and 7 mL glacial acetic acid to the round-bottom flask with boiling chips.

3 분 Fume hood required
2

Slowly add 1 mL concentrated H₂SO₄ as catalyst.

2 분 Add very slowly — exothermic
3

Attach reflux condenser and heat at gentle reflux for 60 minutes.

60 분 Ensure condenser water flows
4

Cool and transfer to a separating funnel. Add 25 mL water and shake.

3 분
5

Wash the organic layer with 25 mL of 5% NaHCO₃. Vent frequently.

5 분 CO₂ produced — vent
6

Dry the organic layer over Na₂SO₄ for 10 minutes. Filter and smell by wafting.

12 분 Waft — do not sniff directly
7

Calculate the yield and record the banana-like aroma.

5 분

예상 결과

A clear, pale yellow liquid with a strong banana aroma (isoamyl acetate). Typical yield is 50-65%. The unmistakable banana smell confirms successful ester formation.

정리

Dispose of organic waste in designated containers. Neutralize acid waste. Rinse glassware with acetone then water.

세부 정보

카테고리
Organic Synthesis
난이도
Advanced (University)
소요 시간
90 분
예상 비용
$22.00
단계
7
재료
5

더 많은 실험

아세트산에틸의 피셔 에스테르화 90 min 아세트아미노펜(파라세타몰) 조제 80 min 아스피린(아세틸살리실산) 합성 90 min 루미놀 합성 120 min 식물성 기름에서 바이오디젤 생산 60 min 비누화 반응으로 비누 만들기 60 min 차에서 카페인 추출 90 min 알돌 축합(디벤잘아세톤) 75 min 나일론 6,10 합성(나일론 로프 트릭) 30 min 슬라임 합성(가교 PVA) 20 min

Frequently Asked Questions

What is the objective of 바나나 오일(아세트산이소아밀) 합성?
아세트산과 이소아밀알코올의 피셔 에스테르화로 아세트산이소아밀(바나나 오일)을 합성하고, 에스테르가 과일 향미를 만드는 원리를 실증한다.
How difficult is 바나나 오일(아세트산이소아밀) 합성?
This experiment is rated as Advanced (University). It takes approximately 90 minutes to complete.
What safety precautions are needed for 바나나 오일(아세트산이소아밀) 합성?
Key safety precautions include: Concentrated H₂SO₄ is extremely corrosive; Glacial acetic acid causes burns; Isoamyl alcohol is flammable.
What materials are needed for 바나나 오일(아세트산이소아밀) 합성?
The main materials required are: Isoamyl alcohol (3-methyl-1-butanol), Glacial acetic acid, Sulfuric acid (H₂SO₄), Sodium bicarbonate solution, Anhydrous sodium sulfate.
What results should I expect from 바나나 오일(아세트산이소아밀) 합성?
A clear, pale yellow liquid with a strong banana aroma (isoamyl acetate). Typical yield is 50-65%. The unmistakable banana smell confirms successful ester formation.