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Methylamine → 2-{7-Chloro-4-[(3-oxo-3,4-dihydro-2H-1,4-benzoxazin-6-yl)carbonyl]-3,4-dihydro-2H-1,4-benzoxazin-3-yl}-N-methylacetamide

HRID 1054189
ノート
印刷プレビュー

反応式

HRID 1054189 の反応式
[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[N:10]([C:11]([C:13]3[CH:23]=[CH:22][C:16]4[O:17][CH2:18][C:19](=[O:21])[NH:20][C:15]=4[CH:14]=3)=[O:12])[CH:9]([CH2:24][C:25]([OH:27])=O)[CH2:8][O:7][C:6]=2[CH:28]=1.[CH3:29][NH2:30].C(P1(=O)OP(CCC)(=O)OP(CCC)(=O)O1)CC>CCOC(C)=O>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[N:10]([C:11]([C:13]3[CH:23]=[CH:22][C:16]4[O:17][CH2:18][C:19](=[O:21])[NH:20][C:15]=4[CH:14]=3)=[O:12])[CH:9]([CH2:24][C:25]([NH:30][CH3:29])=[O:27])[CH2:8][O:7][C:6]=2[CH:28]=1
参加物実験手順後処理出典と根拠反応ノート

参加物

5

反応物 3

HCID 6329MethylamineHCID 111923Propylphosphonic anhydrideHCID 1185996432-(7-chloro-4-(3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carbonyl)-3,4-dihydro-2H-benzo[b][1,4]oxazin-3-yl)acetic acid2 回

生成物 1

HCID 1185996182-{7-Chloro-4-[(3-oxo-3,4-dihydro-2H-1,4-benzoxazin-6-yl)carbonyl]-3,4-dihydro-2H-1,4-benzoxazin-3-yl}-N-methylacetamide収率 64.1%

試薬・触媒・溶媒 1

HCID 8857
Ethyl Acetate
溶媒

実験手順

A mixture of 2-(7-chloro-4-(3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carbonyl)-3,4-dihydro-2H-benzo[b][1,4]oxazin-3-yl)acetic acid (Intermediate 22, 38 mg, 0.09 mmol), methanamine (0.236 mL, 0.47 mmol) (2 M solution in THF), and TEA (0.039 mL, 0.28 mmol) in EtOAc (2 mL) was treated with T3P (50 wt. % in EtOAc, 0.112 mL, 0.19 mmol) at rt. The reaction mixture was stirred at rt over night and concentrated. The crude product was purified by preparative HPLC (Kromasil C8 column (10 μm 250×20 ID mm), using a gradient of 20-60% ACN in H2O/ACN/FA 95/5/0.2 buffer, over 20 min with a flow of 19 mL/min, UV detection at 240 nm). Freeze-drying gave the title compound (24 mg, 61%) as a white powder.

後処理

  1. concentrationconcentrated
  2. customThe crude product was purified by preparative HPLC (Kromasil C8 column (10 μm 250×20 ID mm)
  3. customFreeze-drying

出典と根拠

ORDレコード
ord-a4c091a3cb8e4794ad4caed3765d5ad0
出典データセット
uspto-grants-2016_07
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US09394291B2

反応ノート

読み込み中…

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