Methylhydroquinone → Durohydroquinone

HRID 380778

反応式

HRID 380778 の反応式
[CH3:1]C1C=C(O)C=CC=1O.CC1C(C)=C(C=CC=1O)O.[CH3:20][C:21]1[C:22]([OH:30])=[C:23]([CH3:29])[C:24]([CH3:28])=[C:25]([CH:27]=1)[OH:26]>[O-2].[Cr+3].[O-2].[O-2].[Cr+3].CO>[CH3:20][C:21]1[C:22]([OH:30])=[C:23]([CH3:29])[C:24]([CH3:28])=[C:25]([OH:26])[C:27]=1[CH3:1]

参加物

6

反応物 3

HCID 7253Methylhydroquinone2 回HCID 12785TrimethylhydroquinoneHCID 691002,3-Dimethylhydroquinone

生成物 1

HCID 136346Durohydroquinone

試薬・触媒・溶媒 2

HCID 165971Chromium oxide触媒HCID 887Methanol溶媒

実験手順

Into an autoclave (inner volume: 9 ml, made of SUS 316, equipped with a manometer) were charged 0.115 g of methylhydroquinone, 3.268 g of methanol and 4.6 mg of chromium oxide (manufactured by High Purity Chemicals). The reaction was started by elevating the temperature up to 350° C. with sand bath. The pressure during the reaction was 18 MPa. After 2 hours, the autoclave was quickly cooled and the reaction solution was taken out from the autoclave when the temperature was cooled back to the room temperature. The measurement according to the process described above revealed that the conversion of methylhydroquinone was 17% by mole, the selectivity of dimethylhydroquinone was 74% by mole and the selectivity of trimethylhydroquinone was 2% by mole. No tetramethylhydroquinone was produced.

後処理

  1. customequipped with a manometer)
  2. customup to 350° C.
  3. temperaturethe autoclave was quickly cooled

出典と根拠

ORDレコード
ord-e89f99fbd2f24f859f6b97f987213038
出典データセット
uspto-grants-2001_10
特許番号
US06303801B1

関連ノート

読み込み中…