Acetic Anhydride → N-(4,5,6,7-tetrahydro-5-(5,6-dimethoxypyrazin-2-yl)thiazolo[5,4-c]pyridin-2-yl)acetamide

HRID 39360ノート

反応式

HRID 39360 の反応式
[CH3:1][O:2][C:3]1[N:4]=[CH:5][C:6]([N:11]2[CH2:16][CH2:15][C:14]3[N:17]=[C:18]([NH2:20])[S:19][C:13]=3[CH2:12]2)=[N:7][C:8]=1[O:9][CH3:10].CCN(C(C)C)C(C)C.[C:30](OC(=O)C)(=[O:32])[CH3:31]>C(Cl)Cl>[CH3:1][O:2][C:3]1[N:4]=[CH:5][C:6]([N:11]2[CH2:16][CH2:15][C:14]3[N:17]=[C:18]([NH:20][C:30](=[O:32])[CH3:31])[S:19][C:13]=3[CH2:12]2)=[N:7][C:8]=1[O:9][CH3:10]

参加物

5

反応物 3

HCID 7918Acetic AnhydrideHCID 81531DiisopropylethylamineHCID 866619525-(5,6-Dimethoxypyrazin-2-yl)-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridin-2-amine

生成物 1

HCID 46872069N-(4,5,6,7-tetrahydro-5-(5,6-dimethoxypyrazin-2-yl)thiazolo[5,4-c]pyridin-2-yl)acetamide収率 49.2%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

実験手順

As shown in step 9-vi of Scheme 9, to a solution of Compound 1032 (65.4 mg, 0.223 mmol) in DCM (2 mL) was added DIEA (200 μL, 1.148 mmol) and acetic anhydride (200 μL, 2.12 mmol). The reaction solution was stirred at room temperature for 150 min and the crude produce purified by medium pressure silica gel chromatography (10 to 80% EtOAc in Hexanes) to give N-(4,5,6,7-tetrahydro-5-(5,6-dimethoxypyrazin-2-yl)thiazolo[5,4-c]pyridin-2-yl)acetamide (Compound 14, 36.8 mg) as an off white solid, which was salted as its mono-mesylate salt to yield a beige solid: ESMS (M+H) 336.12; 1H NMR (300.0 MHz, DMSO-d6) δ 7.31 (s, 1H), 4.55 (s, 2H), 3.91 (m, 3H), 3.83 (m, 5H), 2.73 (t, J=5.4 Hz, 2H), 2.39 (d, J=0.6 Hz, 3H) and 2.12 (s, 3H) ppm.

後処理

  1. customthe crude produce
  2. custompurified by medium pressure silica gel chromatography (10 to 80% EtOAc in Hexanes)

出典と根拠

ORDレコード
ord-0912db0cd489499ea55d404d14a6cb45
出典データセット
uspto-grants-2013_09
特許番号
US08524906B2

反応ノート

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