Diisopropylethylamine → 2-(4-(1-(4-methoxybenzyl)-1H-pyrazol-4-yl)thiazol-2-yloxy)pyridine

HRID 1893716ノート

反応式

HRID 1893716 の反応式
Br[C:2]1[N:3]=[C:4]([O:7][C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][N:9]=2)[S:5][CH:6]=1.[CH3:14][O:15][C:16]1[CH:36]=[CH:35][C:19]([CH2:20][N:21]2[CH:25]=[C:24](B3OC(C)(C)C(C)(C)O3)[CH:23]=[N:22]2)=[CH:18][CH:17]=1.C(N(C(C)C)C(C)C)C>O1CCOCC1.O.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[CH3:14][O:15][C:16]1[CH:17]=[CH:18][C:19]([CH2:20][N:21]2[CH:25]=[C:24]([C:2]3[N:3]=[C:4]([O:7][C:8]4[CH:13]=[CH:12][CH:11]=[CH:10][N:9]=4)[S:5][CH:6]=3)[CH:23]=[N:22]2)=[CH:35][CH:36]=1

参加物

6

反応物 3

HCID 81531DiisopropylethylamineHCID 534402131-(4-methoxybenzyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazoleHCID 668718162-(4-Bromothiazol-2-yloxy)pyridine

生成物 1

HCID 668891372-(4-(1-(4-methoxybenzyl)-1H-pyrazol-4-yl)thiazol-2-yloxy)pyridine収率 14.7%

試薬・触媒・溶媒 2

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)触媒HCID 218864351,4-Dioxane--water (1/1)溶媒

反応条件

温度
150 °C

実験手順

According to Scheme 3, Step 3: A mixture of 2-(4-bromothiazol-2-yloxy)pyridine (1.56 mmol, 400 mg), 1-(4-methoxybenzyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (1.87 mmol, 587 mg), PdCl2(dppf) (0.16 mmol, 127 mg) and N-ethyl-N-isopropylpropan-2-amine (3.11 mmol, 0.53 mL) in dioxane/water (1:1, 10 mL) was stirred at 150° C. for 1 hour under microwave conditions. The reaction mixture was filtered through a pad of celite and was washed with DCM. The organic phase was washed with water, was dried over MgSO4, was filtered and was concentrated under reduced pressure. The crude mixture was purified by flash chromatography over silica gel using cyclohexane/EtOAc (90:10 to 70:30) as eluent to yield 2-(4-(1-(4-methoxybenzyl)-1H-pyrazol-4-yl)thiazol-2-yloxy)pyridine (0.23 mmol, 83 mg, 9%) as an oil.

後処理

  1. filtrationThe reaction mixture was filtered through a pad of celite
  2. washwas washed with DCM
  3. washThe organic phase was washed with water
  4. dry with materialwas dried over MgSO4
  5. filtrationwas filtered
  6. concentrationwas concentrated under reduced pressure
  7. customThe crude mixture was purified by flash chromatography over silica gel

出典と根拠

ORDレコード
ord-9aa6d61415754e028475a30de29149ec
出典データセット
uspto-grants-2013_08
特許番号
US08513252B2

反応ノート

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