Triethylamine → 2-Chloromethyl-4,8-dimethoxy-naphthalene

HRID 1858795ノート

反応式

HRID 1858795 の反応式
CS([Cl:5])(=O)=O.[CH3:6][O:7][C:8]1[C:17]2[C:12](=[C:13]([O:18][CH3:19])[CH:14]=[CH:15][CH:16]=2)[CH:11]=[C:10]([CH2:20]O)[CH:9]=1.C(N(CC)CC)C>C(Cl)Cl>[Cl:5][CH2:20][C:10]1[CH:9]=[C:8]([O:7][CH3:6])[C:17]2[C:12](=[C:13]([O:18][CH3:19])[CH:14]=[CH:15][CH:16]=2)[CH:11]=1

参加物

5

反応物 3

HCID 8471TriethylamineHCID 31297Methanesulfonyl chlorideHCID 22126362HCID 22126362、化合物

生成物 1

HCID 221269642-Chloromethyl-4,8-dimethoxy-naphthalene収率 88.9%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒2 回

実験手順

A solution of 3.92 g of methanesulphonyl chloride in 20 ml of methylene chloride was added dropwise to a solution, cooled to -10° C., of 7.7 g (35.3 mmol) of (4,8-dimethoxy-naphthalen-2-yl)-methanol and 4.4 g (38.8 mmol) of triethylamine in 50 ml of methylene chloride. The reaction mixture was stirred at room temperature for 18 hours. For the working-up, the mixture was extracted with 50 ml of ice-cold sodium hydrogen carbonate solution and the aqueous phase was separated and back-extracted with 25 ml of methylene chloride. The combined organic phases were dried over sodium sulphate and subsequently evaporated under reduced pressure. For purification, the residue was filtered over a layer of silica gel using methylene chloride as the eluent. There were obtained 7.2 g of 2-chloromethyl-4,8-dimethoxy-naphthalene as a beige solid; MS: 296 (M)+.

後処理

  1. extractionthe mixture was extracted with 50 ml of ice-cold sodium hydrogen carbonate solution
  2. customthe aqueous phase was separated
  3. extractionback-extracted with 25 ml of methylene chloride
  4. dry with materialThe combined organic phases were dried over sodium sulphate
  5. customsubsequently evaporated under reduced pressure
  6. customFor purification
  7. filtrationthe residue was filtered over a layer of silica gel

出典と根拠

ORDレコード
ord-4871e3f6e55f4571828e15067786a104
出典データセット
uspto-grants-2000_11
特許番号
US06150526

反応ノート

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