비티히 반응
Ph3P=CHR + R'CHO → R'CH=CHR + Ph3P=O
개요
A phosphorus ylide (Wittig reagent) reacts with an aldehyde or ketone to form an alkene and triphenylphosphine oxide. This reaction specifically converts C=O to C=C, making it invaluable for alkene synthesis with precise double bond placement. Georg Wittig won the 1979 Nobel Prize for this reaction.
일상 속 예시
Vitamin A and beta-carotene are synthesized industrially using Wittig reactions to build their polyene chains with correct geometry.
산업적 중요성
비티히 반응은 비타민 A, 베타카로틴, 프로스타글란딘, 그리고 수많은 의약품 중간체를 공업 규모로 합성하는 데 사용됩니다.
성질
- 유형
- 유기
- 가역 반응
- 아니오
- 에너지
- 발열
- ΔH
- -90.0 kJ/mol
자주 묻는 질문
What is the equation for 비티히 반응?
The balanced equation is: Ph₃P=CHR + R'CHO → R'CH=CHR + Ph₃P=O.
What type of reaction is 비티히 반응?
비티히 반응 is a 유기 reaction.
Is 비티히 반응 exothermic or endothermic?
비티히 반응 is exothermic (releases energy). The enthalpy change (ΔH) is -90.0 kJ/mol.