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Sodium Carbonate → 5-(2-Methoxy-4-(1-methyl-1H-pyrazol-4-yl)phenyl)-1,3,4-thiadiazol-2-amine

HRID 579350
ノート
印刷プレビュー

反応式

HRID 579350 の反応式
[CH3:1][N:2]1[CH:6]=[C:5](B2OC(C)(C)C(C)(C)O2)[CH:4]=[N:3]1.I[C:17]1[CH:22]=[CH:21][C:20]([C:23]2[S:27][C:26]([NH2:28])=[N:25][N:24]=2)=[C:19]([O:29][CH3:30])[CH:18]=1.C([O-])([O-])=O.[Na+].[Na+]>O1CCOCC1.O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH3:30][O:29][C:19]1[CH:18]=[C:17]([C:5]2[CH:4]=[N:3][N:2]([CH3:1])[CH:6]=2)[CH:22]=[CH:21][C:20]=1[C:23]1[S:27][C:26]([NH2:28])=[N:25][N:24]=1
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

7

反応物 3

HCID 10340Sodium CarbonateHCID 27739871-Methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazoleHCID 867271705-(4-Iodo-2-methoxyphenyl)-1,3,4-thiadiazol-2-amine

生成物 1

HCID 867271715-(2-Methoxy-4-(1-methyl-1H-pyrazol-4-yl)phenyl)-1,3,4-thiadiazol-2-amine収率 62.1%

試薬・触媒・溶媒 3

HCID 178418397
HCID 178418397、化合物
触媒
HCID 962Water溶媒
HCID 312751,4-Dioxane溶媒

反応条件

温度
80 °C

実験手順

To a stirred suspension of 1-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (137 mg, 0.660 mmol) and 5-(4-iodo-2-methoxyphenyl)-1,3,4-thiadiazol-2-amine (200 mg, 0.6 mmol) in dioxane (4 mL) was added Pd(PPh3)4 (35 mg, 0.03 mmol) followed by a solution of Na2CO3 (191 mg, 1.801 mmol) in water (1 mL). The reaction was purged with nitrogen then heated at 80° C. for 18 hours. The reaction mixture was diluted with MeOH (20 mL), filtered through celite, and rinsed with DCM (20 mL). The filtrate was concentrated in vacuo to afford the crude product as an orange oily residue. The crude product was pre-absorbed onto silica gel and purified by flash chromatography using a 24 g silica cartridge, running a MeOH/DCM gradient to afford the title compound as a pale yellow solid (107 mg, 62% yield). LC-MS: Rt 0.81 min; MS m/z 288.1 [M+H]+ [Method A]. 1H NMR (400 MHz, DMSO-d6) δ ppm 8.27 (s, 1H), 8.05 (d, J=8.08 Hz, 1H), 7.98 (s, 1H), 7.36 (d, J=1.52 Hz, 1H), 7.28 (dd, J=8.08, 1.52 Hz, 1H), 7.13 (s, 2H), 3.99 (s, 3H), 3.88 (s, 3H).

後処理

  1. customThe reaction was purged with nitrogen
  2. additionThe reaction mixture was diluted with MeOH (20 mL)
  3. filtrationfiltered through celite
  4. washrinsed with DCM (20 mL)
  5. concentrationThe filtrate was concentrated in vacuo
  6. customto afford the crude product as an orange oily residue
  7. customThe crude product was pre-absorbed onto silica gel
  8. custompurified by flash chromatography

出典と根拠

ORDレコード
ord-8d37739cd6494238b13e5fcc01abdccf
出典データセット
uspto-grants-2015_05
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US09040712B2

反応ノート

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