2-Chlorobenzoyl chloride → N-[5-(5-chlorobenzoxazol-6-yl)(2-pyridyl)](2-chlorophenyl)carboxamide

HRID 2272177ノート

反応式

HRID 2272177 の反応式
[Cl:1][C:2]1[C:3]([C:11]2[CH:12]=[CH:13][C:14]([NH2:17])=[N:15][CH:16]=2)=[CH:4][C:5]2[O:9][CH:8]=[N:7][C:6]=2[CH:10]=1.[Cl:18][C:19]1[CH:27]=[CH:26][CH:25]=[CH:24][C:20]=1[C:21](Cl)=[O:22].CCN(C(C)C)C(C)C.C([O-])(O)=O.[Na+].C(Cl)Cl>CN(C1C=CN=CC=1)C.C(Cl)Cl>[Cl:1][C:2]1[C:3]([C:11]2[CH:12]=[CH:13][C:14]([NH:17][C:21]([C:20]3[CH:24]=[CH:25][CH:26]=[CH:27][C:19]=3[Cl:18])=[O:22])=[N:15][CH:16]=2)=[CH:4][C:5]2[O:9][CH:8]=[N:7][C:6]=2[CH:10]=1

参加物

7

反応物 4

HCID 691102-Chlorobenzoyl chlorideHCID 81531DiisopropylethylamineHCID 23716255Sodium bicarbonate methylene chlorideHCID 584869115-(5-Chlorobenzoxazol-6-yl)-2-pyridylamine

生成物 1

HCID 58486794N-[5-(5-chlorobenzoxazol-6-yl)(2-pyridyl)](2-chlorophenyl)carboxamide収率 49.2%

試薬・触媒・溶媒 2

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

実験手順

To a solution of 5-(5-chlorobenzoxazol-6-yl)-2-pyridylamine (31) (23 mg, 0.09 mmol) and 2 mg DMAP in 2 ml DCM was added 2-chlorobenzoyl chloride (23 μl, 0.18 mmol) followed by addition of DIEA (94 μl). The resulting brown solution was stirred at r.t. for overnight. The reaction mixture was worked up with aq. NaHCO3/DCM. DCM phase was washed with brine, concentrated to dryness. The residue was dissolved in 2 ml THF/MeOH/H2O (5:4:1) and stirred with 1N NaOH (135 μl) at r.t. for 30 min before worked up with EA/aq. NaHCO3. Silica gel flash chromatography furnished 17 mg 32 as pale yellow solid. (yield: 49%).

後処理

  1. washDCM phase was washed with brine
  2. concentrationconcentrated to dryness
  3. dissolutionThe residue was dissolved in 2 ml THF/MeOH/H2O (5:4:1)
  4. stirringstirred with 1N NaOH (135 μl) at r.t. for 30 min

出典と根拠

ORDレコード
ord-8f7fb5d31b4c44689e32d0c40228fbbe
出典データセット
uspto-grants-2015_09
特許番号
US09120751B2

反応ノート

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