HCID 22258805、化合物 → HCID 22258798、化合物

HRID 1767318ノート

反応式

HRID 1767318 の反応式
[CH2:1]([O:8][C:9]1[CH:13]=[CH:12][S:11][C:10]=1[C:14](N(OC)C)=[O:15])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH3:20][Mg]Br>C1COCC1>[CH2:1]([O:8][C:9]1[CH:13]=[CH:12][S:11][C:10]=1[C:14](=[O:15])[CH3:20])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

参加物

4

反応物 2

HCID 22258805HCID 22258805、化合物HCID 178418573HCID 178418573、化合物

生成物 1

HCID 22258798HCID 22258798、化合物収率 89%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒2 回

反応条件

温度
0 °C

実験手順

To a cold (0° C.) solution of 3-(benzyloxy)-N-methoxy-N-methyl-2-thiophene-carboxamide (3.47 g, 12.50 mmol) in THF (50 mL) was added a solution of methyl-magnesium bromide in THF (1 M, 35 mL). After being stirred at 0° C. for 1 hr, the reaction mixture was quenched with saturated aqueous NH4Cl solution, diluted with water, and extracted with ethyl acetate. The separated organic phase was washed with brine, dried over Na2SO4, filtered and evaporated. The residue was purified by column chromatography on silica gel (hexane/ethyl acetate/CH2Cl2=3/1/1) followed by recrystallization from n-hexane/ethyl acetate to give 1-[3-(benzyloxy)-2-thienyl]ethanone as a white solid (2.592 g, yield; 89%).

後処理

  1. customthe reaction mixture was quenched with saturated aqueous NH4Cl solution
  2. additiondiluted with water
  3. extractionextracted with ethyl acetate
  4. washThe separated organic phase was washed with brine
  5. dry with materialdried over Na2SO4
  6. filtrationfiltered
  7. customevaporated
  8. customThe residue was purified by column chromatography on silica gel (hexane/ethyl acetate/CH2Cl2=3/1/1)
  9. customfollowed by recrystallization from n-hexane/ethyl acetate

出典と根拠

ORDレコード
ord-b282b01a68d04c27ada10492acc95ec3
出典データセット
uspto-grants-2007_06
特許番号
US07232909B2

反応ノート

読み込み中…