Methylhydroquinone → Durohydroquinone

HRID 380775

反応式

HRID 380775 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].[O-2].[Mn+4].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 178418406HCID 178418406、化合物触媒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 0.111 g of methylhydroquinone, 3.463 g of methanol and 4.6 mg of manganese dioxide (manufactured by High Purity Chemicals Co.). The reaction was started by elevating the temperature up to 350° C. with sand bath. The pressure during the reaction was 16 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 45% by mole, the selectivity of dimethylhydroquinone was 64% by mole, the selectivity of trimethylhydroquinone was 17% by mole and no tetramethylhydroquinone was produced. As byproducts, methyl ethers of dimethylquinone and trimethylquinone, represented by the formulae shown above, were formed with a selectivity of 6% and 2%, respectively.

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-533eb576f3e7470292d5e0346157de96
出典データセット
uspto-grants-2001_10
特許番号
US06303801B1

関連ノート

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