Nitrogen → Methanesulfonic acid 6-(2-methyl-[1,3]dioxolan-2-yl)-pyridin-2-ylmethyl ester

HRID 2064966

反応式

HRID 2064966 の反応式
N#N.[CH3:3][C:4]1([C:9]2[N:14]=[C:13]([CH2:15][OH:16])[CH:12]=[CH:11][CH:10]=2)[O:8][CH2:7][CH2:6][O:5]1.CCN(CC)CC.[S:24](Cl)([CH3:27])(=[O:26])=[O:25]>C(Cl)Cl.CN(C1C=CN=CC=1)C>[CH3:3][C:4]1([C:9]2[N:14]=[C:13]([CH2:15][O:16][S:24]([CH3:27])(=[O:26])=[O:25])[CH:12]=[CH:11][CH:10]=2)[O:5][CH2:6][CH2:7][O:8]1

参加物

7

反応物 4

HCID 947NitrogenHCID 8471TriethylamineHCID 31297Methanesulfonyl chlorideHCID 66928639[6-(2-Methyl-[1,3]dioxolan-2-yl)-pyridin-2-yl]-methanol

生成物 1

HCID 86649482Methanesulfonic acid 6-(2-methyl-[1,3]dioxolan-2-yl)-pyridin-2-ylmethyl ester

試薬・触媒・溶媒 2

HCID 142844-(Dimethylamino)pyridine触媒HCID 6344Dichloromethane溶媒

反応条件

温度
0 °C

実験手順

In a flame dried round-bottomed flask equipped with a magnetic stir bar and under inert atmosphere (N2), a solution of [6-(2-methyl-[1,3]dioxolan-2-yl)-pyridin-2-yl]-methanol (729 mg, 3.74 mmol) in dry CH2Cl2 (10.0 mL) was treated at 0° C. with Et3N (0.67 mL, 4.83 mmol) followed by DMAP (46 mg, 0.37 mmol) and Ms-Cl (0.37 mL, 4.72 mmol). After stirring at 0° C. for 1 h, the reaction mixture was quenched with water (10 mL), extracted with CH2Cl2 (10 mL) and the combined org. extracts were dried over Na2SO4, filtered, and the solvents were removed under reduced pressure. Purification of the residue by FC (70:30 to 50:50 hept-EA) gave the title compound as a pale yellow oil. LC-MS-conditions 02: tR=0.79 min; [M+H]+=274.39.

後処理

  1. customthe reaction mixture was quenched with water (10 mL)
  2. extractionextracted with CH2Cl2 (10 mL)
  3. dry with materialextracts were dried over Na2SO4
  4. filtrationfiltered
  5. customthe solvents were removed under reduced pressure
  6. customPurification of the residue by FC (70:30 to 50:50 hept-EA)

出典と根拠

ORDレコード
ord-4a05563cf438425abb744b206bc98f31
出典データセット
uspto-grants-2012_10
特許番号
US08288419B2

関連ノート

読み込み中…