Cesium carbonate → Ethyl 5-(cyclopropylmethyl)-4-oxo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-2-carboxylate

HRID 1842471ノート

反応式

HRID 1842471 の反応式
[CH:1]1([CH2:4]Br)[CH2:3][CH2:2]1.[O:6]=[C:7]1[NH:12][CH2:11][CH2:10][N:9]2[N:13]=[C:14]([C:16]([O:18][CH2:19][CH3:20])=[O:17])[CH:15]=[C:8]12.C(=O)([O-])[O-].[Cs+].[Cs+]>C(#N)C>[CH:1]1([CH2:4][N:12]2[CH2:11][CH2:10][N:9]3[N:13]=[C:14]([C:16]([O:18][CH2:19][CH3:20])=[O:17])[CH:15]=[C:8]3[C:7]2=[O:6])[CH2:3][CH2:2]1

参加物

5

反応物 3

HCID 10796Cesium carbonateHCID 81503BromomethylcyclopropaneHCID 42873667Ethyl 4-oxo-4,5,6,7-tetrahydropyrazolo(1,5-a)pyrazine-2-carboxylate

生成物 1

HCID 58465837Ethyl 5-(cyclopropylmethyl)-4-oxo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-2-carboxylate

試薬・触媒・溶媒 1

HCID 6342Acetonitrile溶媒

反応条件

温度
70 °C

実験手順

To a solution of cyclopropylmethyl bromide (0.101 g, 0.75 mmol) and ethyl 4-oxo-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine-2-carboxylate (31.4 mg, 0.150 mmol) in acetonitrile (2 mL) was added cesium carbonate (147 mg, 0.45 mmol). The reaction mixture was heated overnight at 70° C. Upon cooling to room temperature, the insolubles were removed by filtration and the solvent evaporated to dryness to afford crude Intermediate 33.

後処理

  1. temperatureUpon cooling to room temperature
  2. customthe insolubles were removed by filtration
  3. customthe solvent evaporated to dryness

出典と根拠

ORDレコード
ord-df742b2d93744e508a5331f72e5a87af
出典データセット
uspto-grants-2015_02
特許番号
US08946223B2

反応ノート

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