2-Bromo-6-methylpyridine → Pyrazine-2-carboxylic acid [5-(6-methyl-pyridin-2-ylethynyl)-bicyclo[3.2.1]oct-1-yl]-amide

HRID 1503267ノート

反応式

HRID 1503267 の反応式
C1(C(O)=O)CCCC(C(O)=O)C1.[C:13]([C:15]12[CH2:22][C:19]([NH:23][C:24]([C:26]3[CH:31]=[N:30][CH:29]=[CH:28][N:27]=3)=[O:25])([CH2:20][CH2:21]1)[CH2:18][CH2:17][CH2:16]2)#[CH:14].Br[C:33]1[CH:38]=[CH:37][CH:36]=[C:35]([CH3:39])[N:34]=1>C(#N)C.C(OCC)(=O)C.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.[Cu]I>[CH3:39][C:35]1[N:34]=[C:33]([C:14]#[C:13][C:15]23[CH2:22][C:19]([NH:23][C:24]([C:26]4[CH:31]=[N:30][CH:29]=[CH:28][N:27]=4)=[O:25])([CH2:20][CH2:21]2)[CH2:18][CH2:17][CH2:16]3)[CH:38]=[CH:37][CH:36]=1

参加物

8

反応物 3

HCID 792052-Bromo-6-methylpyridineHCID 1072051,3-Cyclohexanedicarboxylic acidHCID 117702563N-(5-Ethynylbicyclo[3.2.1]octan-1-yl)pyrazine-2-carboxamide

生成物 1

HCID 71535007Pyrazine-2-carboxylic acid [5-(6-methyl-pyridin-2-ylethynyl)-bicyclo[3.2.1]oct-1-yl]-amide収率 36.1%

試薬・触媒・溶媒 4

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)触媒HCID 178418397HCID 178418397、化合物触媒HCID 6342Acetonitrile溶媒HCID 8857Ethyl Acetate溶媒

反応条件

温度
70 °C

実験手順

To a stirred mixture of intermediate 1, N-(5-ethynylbicyclo[3.2.1]octan-1-yl)pyrazine-2-carboxamide (40 mg, 0.16 mmol) and 2-bromo-6-methylpyridine (30 mg, 0.18 mmol) in TEA (0.5 mL) and acetonitrile (2 mL) was added Pd(PPh3)4 (2 mg, 0.02 mmol), followed by an addition of CuI (4 mg, 0.02 mmol). After heated at 70° C. for three hours, the reaction was cooled to room temperature, diluted with ethyl acetate (30 mL), washed with water and brine, dried over Na2SO4 and concentrated under reduced pressure. The resulting residue was purified by Prep HPLC to afford 20 mg (36%) of the title compound, pyrazine-2-carboxylic acid [5-(6-methyl-pyridin-2-ylethynyl)-bicyclo[3.2.1]oct-1-yl]-amide, as a white solid. 1HNMR (500 MHz, CDCl3): δ 9.40 (s, 1H), 8.75 (s, 1H), 8.51 (s, 1H), 7.91 (s, 1H), 7.51 (t, J=7.5 Hz, 1H), 7.21 (d, J=8.0 Hz, 1H), 7.06 (d, J=7.5 Hz, 1H), 2.55-2.52 (m, 4H), 2.29-1.76 (m, 11H); ESI-MS m/z: 347 (M+H)+.

後処理

  1. temperaturethe reaction was cooled to room temperature
  2. washwashed with water and brine
  3. dry with materialdried over Na2SO4
  4. concentrationconcentrated under reduced pressure
  5. customThe resulting residue was purified by Prep HPLC

出典と根拠

ORDレコード
ord-f43f741af9fa46f8b553f68f6747c0a0
出典データセット
uspto-grants-2015_12
特許番号
US09212165B2

反応ノート

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