9-hydroxy-1-oxo-1H-naphtho[2,1-b]pyran-2-carboxaldehyde acetate → 9-Hydroxy-1-oxo-1H-naphtho[2,1-b]pyran-2-carboxaldehyde

HRID 28238노트

반응식

HRID 28238 반응식
C(O)(=O)C.[OH:5][C:6]1[CH:19]=[C:18]2[C:9]([CH:10]=[CH:11][C:12]3[O:13][CH:14]=[C:15]([CH:21]=[O:22])[C:16](=[O:20])[C:17]=32)=[CH:8][CH:7]=1>C(O)=O>[OH:5][C:6]1[CH:19]=[C:18]2[C:9]([CH:10]=[CH:11][C:12]3[O:13][CH:14]=[C:15]([CH:21]=[O:22])[C:16](=[O:20])[C:17]=32)=[CH:8][CH:7]=1

참가 물질

3

반응물 1

HCID 867372399-hydroxy-1-oxo-1H-naphtho[2,1-b]pyran-2-carboxaldehyde acetate

생성물 1

HCID 130510419-Hydroxy-1-oxo-1H-naphtho[2,1-b]pyran-2-carboxaldehyde

시약·촉매·용매 1

HCID 284Formic Acid용매

실험 절차

Prepared by refluxing 9-hydroxy-1-oxo-1H-naphtho[2,1-b]pyran-2-carboxaldehyde acetate (20.0 g, 0.071 m) in formic acid (250 ml, 88%) for 18 hrs. The product which crystallizes on cooling is filtered, washed with water, with acetone and sucked dry. The crystals are red-brown (16.0 g, 94%), m.p. dec>270° C.

후처리

  1. customPrepared
  2. customThe product which crystallizes
  3. temperatureon cooling
  4. filtrationis filtered
  5. washwashed with water, with acetone
  6. customsucked dry
  7. custom(16.0 g, 94%), m.p. dec>270° C.

출처 및 근거

ORD 기록
ord-b6acbcd6754a45438040d402baf6706d
출처 데이터셋
uspto-grants-1980_09
특허 번호
US04225722

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