甲基磺酰氯 → N-[4-(2,4-dioxo-4H-benzo[d][1,3]oxazin-1-ylmethyl)-pyridin-2-yl]-methanesulfonamide

HRID 1663165

反应方程式

HRID 1663165 反应方程式
[NH2:1][C:2]1[CH:7]=[C:6]([CH2:8][N:9]2[C:14]3[CH:15]=[CH:16][CH:17]=[CH:18][C:13]=3[C:12](=[O:19])[O:11][C:10]2=[O:20])[CH:5]=[CH:4][N:3]=1.[CH3:21][S:22](Cl)(=[O:24])=[O:23]>N1C=CC=CC=1>[O:20]=[C:10]1[N:9]([CH2:8][C:6]2[CH:5]=[CH:4][N:3]=[C:2]([NH:1][S:22]([CH3:21])(=[O:24])=[O:23])[CH:7]=2)[C:14]2[CH:15]=[CH:16][CH:17]=[CH:18][C:13]=2[C:12](=[O:19])[O:11]1

参与物

4

反应物 2

HCID 31297甲基磺酰氯HCID 583773961-(2-Amino-pyridin-4-ylmethyl)-1H-benzo[d][1,3]oxazine-2,4-dione

产物 1

HCID 86615647N-[4-(2,4-dioxo-4H-benzo[d][1,3]oxazin-1-ylmethyl)-pyridin-2-yl]-methanesulfonamide

试剂、催化剂与溶剂 1

HCID 1049吡啶溶剂

实验过程

To a stirred solution of 1-(2-amino-pyridin-4-ylmethyl)-1H-benzo[d][1,3]oxazine-2,4-dione (600 mg, see preparation 7b) in pyridine (7 ml) was added methanesulfonyl chloride (280 mg) and the reaction mixture was stirred at room temperature for 15 hours. The solvent was evaporated under reduced pressure and the residue was dissolved in EtOAc and washed with water and brine. The organic layer was dried (MgSO4) and evaporated under reduced pressure. The remaining solid yellow material was dissolved in a mixture of hot EtOAc (50 ml) and DMF (4 ml). On cooling a solid material formed, that was isolated by filtration and dried under vacuum, affording N-[4-(2,4-dioxo-4H-benzo[d][1,3]oxazin-1-ylmethyl)-pyridin-2-yl]-methanesulfonamide. Step 2: This anhydride intermediate was converted into the title compound by reaction with O-cyclopentylmethyl-hydroxylamine hydrochloride (see preparation 66), using general procedure 1A. 13C-NMR (DMSO-d6) δ 166.8, 152.9, 152.6, 148.3, 132.4, 127.9, 115.2, 114.8, 113.3, 111.4, 110.1, 79.4, 45.0, 41.5, 37.6, 28.9, 24.9.

后处理

  1. customThe solvent was evaporated under reduced pressure
  2. dissolutionthe residue was dissolved in EtOAc
  3. washwashed with water and brine
  4. dry with materialThe organic layer was dried (MgSO4)
  5. customevaporated under reduced pressure
  6. dissolutionThe remaining solid yellow material was dissolved in a mixture of hot EtOAc (50 ml) and DMF (4 ml)
  7. temperatureOn cooling a solid material
  8. customformed
  9. customthat was isolated by filtration
  10. customdried under vacuum

来源与证据

ORD记录
ord-2d706841dd974ff3bf2bba56c3c6dc9e
来源数据集
uspto-grants-2011_10
专利号
US08034811B2

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