Sodium Nitrite → N-[2,4-Dichloro-3-(2-methylsulfanyl-7-oxo-7,8-dihydro-pyrido[2,3-d]pyrimidin-6-yl)-phenyl]-3-trifluoromethyl-benzamide

HRID 270707ノート

反応式

HRID 270707 の反応式
N[C:2]1[C:3]([C:14]2[C:15]([Cl:34])=[C:16]([NH:21][C:22](=[O:33])[C:23]3[CH:28]=[CH:27][CH:26]=[C:25]([C:29]([F:32])([F:31])[F:30])[CH:24]=3)[CH:17]=[CH:18][C:19]=2[Cl:20])=[CH:4][C:5]2[CH:10]=[N:9][C:8]([S:11][CH3:12])=[N:7][C:6]=2[N:13]=1.N([O-])=[O:36].[Na+]>C(O)(C(F)(F)F)=O>[Cl:34][C:15]1[C:14]([C:3]2[C:2](=[O:36])[NH:13][C:6]3[N:7]=[C:8]([S:11][CH3:12])[N:9]=[CH:10][C:5]=3[CH:4]=2)=[C:19]([Cl:20])[CH:18]=[CH:17][C:16]=1[NH:21][C:22](=[O:33])[C:23]1[CH:28]=[CH:27][CH:26]=[C:25]([C:29]([F:30])([F:31])[F:32])[CH:24]=1

参加物

4

反応物 2

HCID 23668193Sodium NitriteHCID 59833927HCID 59833927、化合物

生成物 1

HCID 59833903N-[2,4-Dichloro-3-(2-methylsulfanyl-7-oxo-7,8-dihydro-pyrido[2,3-d]pyrimidin-6-yl)-phenyl]-3-trifluoromethyl-benzamide収率 96.5%

試薬・触媒・溶媒 1

HCID 6422Trifluoroacetic acid溶媒

実験手順

To a solution of N-[3-(7-amino-2-methylsulfanyl-pyrido[2,3-d]pyrimidin-6-yl)-2,4-dichloro-phenyl]-3-trifluoromethyl-benzamide (1.7 g, 3.24 mmol) in TFA (15 mL) is slowly added NaNO2 (783 mg, 11.35 mmol) at 0° C. with stirring for 20 minutes. The solvents are evaporated and diluted with EtOAc and washed with saturated K2CO3, brine and water. The organic layer is dried, filtered and concentrated to give the crude product. The crude product is purified by flash silica gel column, eluting with CH2Cl2 (100%) gradient to CH2Cl2/MeOH(NH3, 2N)(93/7%), to give the title intermediate as a solid (1.64 g, 96.5%).

後処理

  1. customat 0° C.
  2. customThe solvents are evaporated
  3. additiondiluted with EtOAc
  4. washwashed with saturated K2CO3, brine and water
  5. customThe organic layer is dried
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customto give the crude product
  9. customThe crude product is purified by flash silica gel column
  10. washeluting with CH2Cl2 (100%) gradient to CH2Cl2/MeOH(NH3, 2N)(93/7%)

出典と根拠

ORDレコード
ord-b096abb96db84f65af6b157797e9caf1
出典データセット
uspto-grants-2008_11
特許番号
US07449582B2

反応ノート

読み込み中…