Water → 3-Formylchromone

HRID 436278

반응식

HRID 436278 반응식
[OH:1][CH2:2][C:3]1[C:12](=[O:13])[C:11]2[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=2)[O:5][CH:4]=1.O>[N+]([O-])(O)=O>[CH:2]([C:3]1[C:12](=[O:13])[C:11]2[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=2)[O:5][CH:4]=1)=[O:1]

참가 물질

4

반응물 2

HCID 962WaterHCID 113557983-(hydroxymethyl)-4H-chromen-4-one

생성물 1

HCID 871123-Formylchromone

시약·촉매·용매 1

HCID 944Nitric Acid용매

반응 조건

온도
25 °C

실험 절차

A quantity of 35.2 g. (0.2 mole) of 3-(hydroxymethyl)-chromone is dissolved in 250 ml of concentrated nitric acid with stirring at 25° C. There is no initial heat of reaction. The temperature gradually rises to 30° C over the next several minutes and is kept there for about 5 minutes with ice-acetone bath cooling. Water, 600 ml, is added to the reaction solution. The separated, pale yellow solid is filtered, washed well with water and dried to give 25 g. of crude aldehyde melting at 145°-148°.

후처리

  1. temperatureno initial heat of reaction
  2. customgradually rises to 30° C over the next several minutes
  3. temperaturecooling
  4. filtrationThe separated, pale yellow solid is filtered
  5. washwashed well with water
  6. customdried
  7. customto give 25 g

출처 및 근거

ORD 기록
ord-854b5559993e4acc9f7bd78eb146b881
출처 데이터셋
uspto-grants-1977_02
특허 번호
US04008252

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