Cesium carbonate → 2-[3-(2-Fluorobenzyl)-1H-pyrazolo[4,3-b]pyridin-1-yl]-5-nitropyrimidine-4,6-diamine

HRID 1875447ノート

反応式

HRID 1875447 の反応式
[F:1][C:2]1[CH:17]=[CH:16][CH:15]=[CH:14][C:3]=1[CH2:4][C:5]1[C:9]2=[N:10][CH:11]=[CH:12][CH:13]=[C:8]2[NH:7][N:6]=1.Cl[C:19]1[N:24]=[C:23]([NH2:25])[C:22]([N+:26]([O-:28])=[O:27])=[C:21]([NH2:29])[N:20]=1.C1(P(C2CCCCC2)C2C=CC=CC=2C2C(C(C)C)=CC(C(C)C)=CC=2C(C)C)CCCCC1.C(=O)([O-])[O-].[Cs+].[Cs+]>C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].CN(C=O)C.C1(C)C=CC=CC=1>[F:1][C:2]1[CH:17]=[CH:16][CH:15]=[CH:14][C:3]=1[CH2:4][C:5]1[C:9]2=[N:10][CH:11]=[CH:12][CH:13]=[C:8]2[N:7]([C:19]2[N:20]=[C:21]([NH2:29])[C:22]([N+:26]([O-:28])=[O:27])=[C:23]([NH2:25])[N:24]=2)[N:6]=1

参加物

8

反応物 4

HCID 10796Cesium carbonateHCID 111557942-Dicyclohexylphosphino-2',4',6'-triisoprophylbiphenylHCID 59177864HCID 59177864、化合物HCID 178505620HCID 178505620、化合物

生成物 1

HCID 591778732-[3-(2-Fluorobenzyl)-1H-pyrazolo[4,3-b]pyridin-1-yl]-5-nitropyrimidine-4,6-diamine

試薬・触媒・溶媒 3

HCID 9811564Bis(dibenzylideneacetone)palladium触媒HCID 1140Toluene溶媒HCID 6228Dimethylformamide溶媒

反応条件

温度
90 °C

実験手順

A solution of 600 mg (2.64 mmol) of 3-(2-fluorobenzyl)-1H-pyrazolo[4,3-b]pyridine from example 4A, 501 mg (2.64 mmol) of 2-chloro-5-nitropyrimidine-4,6-diamine [Bitterli et al., Helv. Chim. Acta 1951, 34, 835], 48.4 mg (0.053 mmol) of tris(dibenzylideneacetone)dipalladium, 75.5 mg (0.158 mmol) of dicyclohexyl(2′,4′,6′-triisopropylbiphenyl-2-yl)phosphine (XPHOS) and 1.20 g (3.70 mmol) of cesium carbonate in a degassed mixture of 10 ml of toluene and 10 ml of DMF is heated at 90° C. for 4 h. Cooling to room temperature is followed by filtration with suction and washing with THF. The solid is stirred with 100 ml of water and again filtered off with suction. 572 mg (57% of theory) of the desired compound are obtained.

後処理

  1. temperatureCooling to room temperature
  2. filtrationis followed by filtration with suction
  3. washwashing with THF
  4. filtrationagain filtered off with suction

出典と根拠

ORDレコード
ord-93104f7e0b9c4c899b6843c9df33bdd6
出典データセット
uspto-grants-2012_11
特許番号
US08309551B2

反応ノート

読み込み中…