4'-Hydroxyacetophenone → 4-Methylphenyl acetate

HRID 978794

反応式

HRID 978794 の反応式
[C:1]([O:4][C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][CH:6]=1)(=[O:3])[CH3:2].[CH3:11][C:12]([C:14]1[CH:15]=[CH:16][C:17]([OH:20])=[CH:18][CH:19]=1)=[O:13].[OH:21][CH2:22][C:23](C1C=CC=CC=1)=O>F>[C:1]([O:4][C:5]1[CH:10]=[CH:9][CH:8]=[C:7]([CH3:11])[CH:6]=1)(=[O:3])[CH3:2].[C:22]([O:20][C:17]1[CH:18]=[CH:19][C:14]([CH3:12])=[CH:15][CH:16]=1)(=[O:21])[CH3:23].[C:1]([O:4][C:5]1[C:10]([O:13][CH3:12])=[CH:9][CH:8]=[CH:7][CH:6]=1)(=[O:3])[CH3:2]

参加物

7

反応物 3

HCID 74694'-HydroxyacetophenoneHCID 31229Phenyl acetateHCID 68490alpha-Hydroxyacetophenone

生成物 3

HCID 87974-Methylphenyl acetateHCID 61155Guaiacyl acetateHCID 67406Cresatin

試薬・触媒・溶媒 1

HCID 14917Hydrofluoric Acid溶媒2 回

実験手順

Dann and Mylius in a dissertation included as part of a series of Reports from the Institute for Applied Chemistry of the University of Erlangen, received for publication on January 7, 1954 and published in Annalen der Chemie, 587, 1 to 15, show the rearrangement of phenyl acetate in hydrogen fluoride to 4-hydroxyacetophenone, with a maximum yield of 81% after 24 hours of reaction time, and report a yield of 92% stated to be obtained by K. Weichert as reported in Angewandte Chemie, 56, 338 (1943). However, Dann and Mylius suggest that the difference in yields may be at least partly due to the previous ignoring by Weichert of the accompanying 2-hydroxyacetophenone. Dann and Mylius also report somewhat lower yields of hydroxy aromatic ketones from rearrangements in hydrogen fluoride of m-cresyl acetate, p-cresyl acetate, and guaiacol acetate.

後処理

  1. customwith a maximum yield of 81% after 24 hours of reaction time
  2. customto be obtained by K
  3. customin yields may

出典と根拠

ORDレコード
ord-0fdbe6abf04e4b51be4001a91b7b9f71
出典データセット
uspto-grants-1987_05
特許番号
US04665215

関連ノート

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