Cesium carbonate → Tert-butyl 4-(6-(6-chloro-2-methyl-3-oxo-2,3-dihydropyridazin-4-ylamino)pyridin-3-yl)piperidine-1-carboxylate

HRID 337275ノート

反応式

HRID 337275 の反応式
Br[C:2]1[C:3](=[O:10])[N:4]([CH3:9])[N:5]=[C:6]([Cl:8])[CH:7]=1.[NH2:11][C:12]1[N:17]=[CH:16][C:15]([CH:18]2[CH2:23][CH2:22][N:21]([C:24]([O:26][C:27]([CH3:30])([CH3:29])[CH3:28])=[O:25])[CH2:20][CH2:19]2)=[CH:14][CH:13]=1.C1(P(C2C=CC=CC=2)C2C3OC4C(=CC=CC=4P(C4C=CC=CC=4)C4C=CC=CC=4)C(C)(C)C=3C=CC=2)C=CC=CC=1.C(=O)([O-])[O-].[Cs+].[Cs+]>O1CCOCC1.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]>[C:27]([O:26][C:24]([N:21]1[CH2:20][CH2:19][CH:18]([C:15]2[CH:16]=[N:17][C:12]([NH:11][C:2]3[C:3](=[O:10])[N:4]([CH3:9])[N:5]=[C:6]([Cl:8])[CH:7]=3)=[CH:13][CH:14]=2)[CH2:23][CH2:22]1)=[O:25])([CH3:30])([CH3:28])[CH3:29]

参加物

7

反応物 4

HCID 10796Cesium carbonateHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 49839963tert-Butyl 4-(6-aminopyridin-3-yl)piperidine-1-carboxylateHCID 592164744-Bromo-6-chloro-2-methyl-2,3-dihydropyridazin-3-one

生成物 1

HCID 66742247Tert-butyl 4-(6-(6-chloro-2-methyl-3-oxo-2,3-dihydropyridazin-4-ylamino)pyridin-3-yl)piperidine-1-carboxylate収率 76.4%

試薬・触媒・溶媒 2

HCID 9811564Bis(dibenzylideneacetone)palladium触媒HCID 312751,4-Dioxane溶媒

反応条件

温度
90 °C

実験手順

4-Bromo-6-chloro-2-methylpyridazin-3(2H)-one (3.59 g, 16.0 mmol, Eq: 1.00), tert-butyl 4-(6-aminopyridin-3-yl)piperidine-1-carboxylate (4.45 g, 16.0 mmol, Eq: 1.00), 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (696 mg, 1.2 mmol, Eq: 0.075) and cesium carbonate (18.3 g, 56.2 mmol, Eq: 3.5) were suspended in dioxane (150 ml) under an argon atmosphere. Finally tris(dibenzylideneacetone)dipalladium(0) (551 mg, 602 μmol, Eq: 0.0375) was added. The reaction mixture was heated at 90° C. overnight. The reaction mixture was filtered over celite, and the celite cake was washed with dioxane several times. The combined filtrate and washes were concentrated in vacuo and the resultant solid was triturated with EtOAc, washed with ether and dried in a vacuum oven overnight at 50° C. to afford 4.57 g of the desired product as a white solid. The combined filtrate and washes were evaporated to dryness and dissolved in CH2Cl2 (4 ml) and the crude material was purified by flash chromatography (silica gel, 120 g Analogix column, 20% to 50% EtOAc in hexanes over 20 min) to afford and additional 582 mg. Total yield (5.15 g, 12.3 mmol, 76.4% yield). (M+H)+=420 m/e; 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 1.50 (s, 9 H) 1.54-1.69 (m, 3 H) 1.83 (d, J=13.64 Hz, 2 H) 2.67 (tt, J=12.38, 3.66 Hz, 1 H) 2.83 (t, J=13.14 Hz, 2 H) 3.82 (s, 3 H) 6.89 (d, J=8.59 Hz, 1 H) 7.51 (dd, J=8.46, 2.40 Hz, 1 H) 8.25 (d, J=2.27 Hz, 1 H) 8.27 (br. s., 1 H) 8.30 (s, 1 H).

後処理

  1. filtrationThe reaction mixture was filtered over celite
  2. washthe celite cake was washed with dioxane several times
  3. concentrationThe combined filtrate and washes were concentrated in vacuo
  4. customthe resultant solid was triturated with EtOAc
  5. washwashed with ether
  6. customdried in a vacuum oven overnight at 50° C.

出典と根拠

ORDレコード
ord-948886f528014d198c30627c3244e7bf
出典データセット
uspto-grants-2014_11
特許番号
US08889682B2

反応ノート

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