Ammonia → 2-Methyl-1-naphthol

HRID 37687

反応式

HRID 37687 の反応式
[C:1]1([OH:11])[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH:4]=[CH:3][CH:2]=1.N.Cl[Sn](Cl)(Cl)Cl.[C:18]1([OH:28])[C:27]2[C:22](=[CH:23][CH:24]=[CH:25][CH:26]=2)[CH:21]=[CH:20][CH:19]=1.CO>O>[CH3:18][C:2]1[CH:3]=[CH:4][C:5]2[C:10](=[CH:9][CH:8]=[CH:7][CH:6]=2)[C:1]=1[OH:11].[CH3:1][C:21]1[C:22]2[C:27](=[CH:26][CH:25]=[CH:24][CH:23]=2)[C:18]([OH:28])=[CH:19][CH:20]=1

参加物

7

反応物 4

HCID 222AmmoniaHCID 70051-Naphthol2 回HCID 24287Tin tetrachlorideHCID 204735111-Naphthol methanol

生成物 2

HCID 240552-Methyl-1-naphtholHCID 824834-Methyl-1-naphthol

試薬・触媒・溶媒 1

HCID 962Water溶媒

実験手順

Tasaka et al (JP 50047958) disclose the following reaction scheme: methylation of alpha-naphthol at position 2 was effected by vapor phase methylation of 1-naphthol at elevated temperature in the presence of catalyst comprising CeO2 and Sb2O3, GeO2, SnO2 or MgO. Aqueous ammonia (28%) was added to a mixture of SnCl4 and Ce(NO3)4 -2NH4NO3 2H2O in water at 50° C. The resulting precipitate was dried, calcinated for 3 hours at 600° C., and crushed to form a catalyst. 1-Naphthol/methanol mixture (1:6 molar) was passed over the catalyst at 425° C. and 1000 hr-1 space velocity to give 72.5 wt. % 2-methyl-1-naphthol, 2.6 wt. % 4-methyl-naphthol and 2.2 wt. % of other material.

後処理

  1. customthe following reaction scheme
  2. customThe resulting precipitate was dried
  3. customcrushed
  4. customto form a catalyst

出典と根拠

ORDレコード
ord-89bed5156d854d7e8a8bbca45f753b6d
出典データセット
uspto-grants-1995_05
特許番号
US05420362

関連ノート

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