Benzaldehyde → L-Gulose

HRID 345263노트

반응식

HRID 345263 반응식
C(N(C1C=CC=CC=1)N=[CH:10][C@H:11]([C@H:13]([C@@H:15]([C@H:17]([CH2:19][OH:20])[OH:18])[OH:16])[OH:14])[OH:12])C1C=CC=CC=1.O.C(=[O:35])C1C=CC=CC=1.C(O)(=O)C1C=CC=CC=1>C(O)C>[O:20]=[CH:19][C@H:17]([C@H:15]([C@@H:13]([C@H:11]([CH2:10][OH:35])[OH:12])[OH:14])[OH:16])[OH:18]

참가 물질

6

반응물 4

HCID 240BenzaldehydeHCID 243Benzoic AcidHCID 962WaterHCID 67932689L-gulose benzylphenylhydrazone

생성물 1

HCID 80127L-Gulose

시약·촉매·용매 1

HCID 702Ethanol용매

실험 절차

The L-gulose benzylphenylhydrazone was refluxed for three hours with 100 ml. of water and 20 ml. of ethanol containing 7.5 ml. of benzaldehyde and 0.8 grams of benzoic acid. After cooling, the solution was decanted from the crystals of benzaldehyde benzylphenylhydrazone and extracted several times with ether to remove the benzaldehyde and benzoic acid. The solution was then decolorized with activated carbon and concentrated under reduced pressure to a colorless syrup to yield 3.4 grams of syrupy L-gulose.

후처리

  1. temperatureAfter cooling
  2. customthe solution was decanted from the crystals of benzaldehyde benzylphenylhydrazone
  3. extractionextracted several times with ether
  4. customto remove the benzaldehyde and benzoic acid
  5. concentrationconcentrated under reduced pressure to a colorless syrup

출처 및 근거

ORD 기록
ord-4e48fc8e4a234686a9bf04b152a20c5e
출처 데이터셋
uspto-grants-1991_10
특허 번호
USRE033719

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