Acetic Anhydride → N-{4-[(3-bromophenyl)amino]pyrido[4,3-d]pyrimidin-7-yl}acetamide

HRID 50802ノート

反応式

HRID 50802 の反応式
[NH2:1][C:2]1[N:11]=[CH:10][C:9]2[C:8]([NH:12][C:13]3[CH:18]=[CH:17][CH:16]=[C:15]([Br:19])[CH:14]=3)=[N:7][CH:6]=[N:5][C:4]=2[CH:3]=1.[C:20](OC(=O)C)(=[O:22])[CH3:21].C(N(CC)CC)C>CN(C1C=CN=CC=1)C>[C:20]([NH:1][C:2]1[N:11]=[CH:10][C:9]2[C:8]([NH:12][C:13]3[CH:18]=[CH:17][CH:16]=[C:15]([Br:19])[CH:14]=3)=[N:7][CH:6]=[N:5][C:4]=2[CH:3]=1)(=[O:22])[CH3:21]

参加物

5

反応物 3

HCID 7918Acetic AnhydrideHCID 8471TriethylamineHCID 3820597-Amino-4-[(3-bromophenyl)amino]pyrido[4,3-d]pyrimidine

生成物 1

HCID 5328250N-{4-[(3-bromophenyl)amino]pyrido[4,3-d]pyrimidin-7-yl}acetamide収率 7.7%

試薬・触媒・溶媒 1

HCID 142844-(Dimethylamino)pyridine触媒

実験手順

A mixture of 7-amino-4-(3-bromoanilino)-pyrido[4,3-d]pyrimidine (0.154 g, 0.49 mmol), acetic anhydride (0.14 mL, 1.5 mmol), triethylamine (0.14 mL, 1.0 mmol) and a catalytic amount of 4-(N,N-dimethyl-amino)pyridine are stirred under N2 at room temperature for 18 h. The reaction is then quenched by addition of ice water. The dark precipitate is collected by Buchner filtration and is purified by preparative tlc (Rf=0.25, 7% MeOH/CHCl3). Recrystallization from EtOH gives 7-acetylamino-4-(3-bromoanilino)pyrido[4,3-d]-pyrimidine (13.5 mg, 7.7%). 1H NMR (DMSO) δ 10.92 (1H, s), 10.22 (1H, s), 9.64, (1H, s), 8.70 (1H, s), 8.28 (1H, s), 8.21 (1H, s), 7.88 (1H, d, J=7.7Hz) 7.41-7.34 (3H, m), 2.16 (3H, s).

後処理

  1. customThe reaction is then quenched by addition of ice water
  2. filtrationThe dark precipitate is collected by Buchner filtration
  3. customis purified by preparative tlc (Rf=0.25, 7% MeOH/CHCl3)
  4. customRecrystallization from EtOH

出典と根拠

ORDレコード
ord-70086ee13ce24f689982bb5b90c7cdfb
出典データセット
uspto-grants-2004_03
特許番号
US06713484B2

反応ノート

読み込み中…