Methanesulfonyl chloride → Methanesulfonic acid 2-bromo-6-methyl-pyridin-4-ylmethyl ester

HRID 1361208ノート

反応式

HRID 1361208 の反応式
[Br:1][C:2]1[CH:7]=[C:6]([CH2:8][OH:9])[CH:5]=[C:4]([CH3:10])[N:3]=1.CCN(C(C)C)C(C)C.[CH3:20][S:21](Cl)(=[O:23])=[O:22]>ClCCl>[Br:1][C:2]1[CH:7]=[C:6]([CH2:8][O:9][S:21]([CH3:20])(=[O:23])=[O:22])[CH:5]=[C:4]([CH3:10])[N:3]=1

参加物

5

反応物 3

HCID 31297Methanesulfonyl chlorideHCID 81531DiisopropylethylamineHCID 59278372HCID 59278372、化合物

生成物 1

HCID 59278256Methanesulfonic acid 2-bromo-6-methyl-pyridin-4-ylmethyl ester

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒2 回

反応条件

温度
0 °C

実験手順

To a solution of (2-bromo-6-methyl-pyridin-4-yl)-methanol (0.300 g, 1.48 mmol) in dichloromethane (2.0 mL) was added DIPEA (776 μL, 4.45 mmol). The resulting mixture was cooled to 0° C. and methanesulfonyl chloride (120 μL, 1.56 mmol) was added. After 1 hour, the reaction mixture was diluted CH2Cl2 (20 mL) and washed with saturated aqueous ammonium chloride (3×10 mL), saturated aqueous sodium bicarbonate (10 mL) and brine (10 mL). The organic layer was dried over MgSO4, filtered and concentrated to afford methanesulfonic acid 2-bromo-6-methyl-pyridin-4-ylmethyl ester as crude product which was used in the next step without purification.

後処理

  1. washwashed with saturated aqueous ammonium chloride (3×10 mL), saturated aqueous sodium bicarbonate (10 mL) and brine (10 mL)
  2. dry with materialThe organic layer was dried over MgSO4
  3. filtrationfiltered
  4. concentrationconcentrated

出典と根拠

ORDレコード
ord-109b1c95544c4adfa8d4567b76d63ccd
出典データセット
uspto-grants-2011_02
特許番号
US07879873B2

反応ノート

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