Acetic Acid → 3-benzyl-2-(biphenyl-4-ylmethyl)-7-(4-methoxybenzyl)-5-methyl-2H-pyrazolo[3,4-d]pyrimidine-4,6(5H,7H)-dione

HRID 2389529

反応式

HRID 2389529 の反応式
C(O)(=O)C.[C:5]1([C:32]2[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=2)[CH:10]=[CH:9][C:8]([CH:11]=[N:12][NH:13][C:14]2[N:19]([CH2:20][C:21]3[CH:26]=[CH:25][C:24]([O:27][CH3:28])=[CH:23][CH:22]=3)[C:18](=[O:29])[N:17]([CH3:30])[C:16](=[O:31])[CH:15]=2)=[CH:7][CH:6]=1.N1CCCCC1.[C:44]1([CH2:50][CH:51]=O)[CH:49]=[CH:48][CH:47]=[CH:46][CH:45]=1>CN(C=O)C>[CH2:50]([C:51]1[N:12]([CH2:11][C:8]2[CH:7]=[CH:6][C:5]([C:32]3[CH:33]=[CH:34][CH:35]=[CH:36][CH:37]=3)=[CH:10][CH:9]=2)[N:13]=[C:14]2[C:15]=1[C:16](=[O:31])[N:17]([CH3:30])[C:18](=[O:29])[N:19]2[CH2:20][C:21]1[CH:26]=[CH:25][C:24]([O:27][CH3:28])=[CH:23][CH:22]=1)[C:44]1[CH:49]=[CH:48][CH:47]=[CH:46][CH:45]=1

参加物

6

反応物 4

HCID 176Acetic AcidHCID 998PhenylacetaldehydeHCID 8082PiperidineHCID 667958906-(2-(Biphenyl-4-ylmethylene)hydrazinyl)-1-(4-methoxybenzyl)-3-methylpyrimidine-2,4(1H,3H)-dione

生成物 1

HCID 667956863-benzyl-2-(biphenyl-4-ylmethyl)-7-(4-methoxybenzyl)-5-methyl-2H-pyrazolo[3,4-d]pyrimidine-4,6(5H,7H)-dione収率 31.4%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒2 回

反応条件

温度
42.5 °C

実験手順

Acetic acid (4.4 mL) is added in to a solution of 6-(2-(Biphenyl-4-ylmethylene)hydrazinyl)-1-(4-methoxybenzyl)-3-methylpyrimidine-2,4(1H,3H)-dione (3.2 g, 7.26 mmol) in DMF (50 mL) and ButOH (25 mL) at 50° C. Piperidine (8.7 mL) is mixed with a solution of 2-phenylacetaldehyde (8.5 mL, 72.6 mmol) in DMF (20 mL), and the resulting greenish solution is added in to the above solution. The reaction mixture is stirred at 40-45° C. for 36 hours under argon, and the solvent is evaporated under high vacuum. The residue is treated with MeOH (200 mL) to precipitate out 1.23 g product as sandy solids (Yield: 31.4%). MS (FAB) m/z 543.4 [M+H]+.

後処理

  1. additionthe resulting greenish solution is added in to the above solution
  2. customthe solvent is evaporated under high vacuum
  3. additionThe residue is treated with MeOH (200 mL)

出典と根拠

ORDレコード
ord-1708826aeeb445d797f2190aa34ff7be
出典データセット
uspto-grants-2012_09
特許番号
US08273750B2

関連ノート

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