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Sodium Carbonate → tert-butyl 4-(5-amino-6-(5-phenyl-1,2,4-oxadiazol-3-yl)pyrazin-2-yl)-5,6-dihydropyridine-1(2H)-carboxylate

HRID 1959416
ノート
印刷プレビュー

反応式

HRID 1959416 の反応式
Br[C:2]1[N:3]=[C:4]([C:9]2[N:13]=[C:12]([C:14]3[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=3)[O:11][N:10]=2)[C:5]([NH2:8])=[N:6][CH:7]=1.[C:20]([O:24][C:25]([N:27]1[CH2:32][CH:31]=[C:30](B2OC(C)(C)C(C)(C)O2)[CH2:29][CH2:28]1)=[O:26])([CH3:23])([CH3:22])[CH3:21].C(=O)([O-])[O-].[Na+].[Na+]>CN(C=O)C.O.C(OCC)(=O)C>[NH2:8][C:5]1[N:6]=[CH:7][C:2]([C:30]2[CH2:31][CH2:32][N:27]([C:25]([O:24][C:20]([CH3:23])([CH3:22])[CH3:21])=[O:26])[CH2:28][CH:29]=2)=[N:3][C:4]=1[C:9]1[N:13]=[C:12]([C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=2)[O:11][N:10]=1
参加物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 4642098Tert-butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,2,3,6-tetrahydropyridine-1-carboxylateHCID 594722055-Bromo-3-(5-phenyl-1,2,4-oxadiazol-3-yl)pyrazin-2-ylamine

生成物 1

HCID 66744707tert-butyl 4-(5-amino-6-(5-phenyl-1,2,4-oxadiazol-3-yl)pyrazin-2-yl)-5,6-dihydropyridine-1(2H)-carboxylate収率 88.6%

試薬・触媒・溶媒 3

HCID 962
Water
溶媒
HCID 6228Dimethylformamide溶媒
HCID 8857Ethyl Acetate溶媒

実験手順

5-bromo-3-(5-phenyl-1,2,4-oxadiazol-3-yl)pyrazin-2-amine (150 mg, 0.4715 mmol), tert-butyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,6-dihydro-2H-pyridine-1-carboxylate (189.5 mg, 0.6130 mmol) and sodium carbonate (707.0 μL of 2 M, 1.414 mmol) in DMF (1.500 mL) were heated to 120° C. for 45 min in the microwave. After this time the reaction mixture was diluted with water (5 mL) and ethyl acetate (5 mL) and the layers separated. Organic layer washed with water (3×5 mL), dried (MgSO4) and concentrated in vacuo to leave the title compound as a yellow/orange solid (175.6 mg, 88% yield). 1H NMR (400 MHz, DMSO) d 1.44 (s, 9H), 2.60 (m, 2H), 3.57 (m, 2H), 4.06 (m, 2H), 6.70 (s, 1H), 7.30 (br s, 2H), 7.69 (m, 2H), 7.77 (m, 1H), 8.25 (m, 2H) and 8.51 (1H, s) ppm; MS (ES+) 421.02

後処理

  1. customthe layers separated
  2. washOrganic layer washed with water (3×5 mL)
  3. dry with materialdried (MgSO4)
  4. concentrationconcentrated in vacuo

出典と根拠

ORDレコード
ord-d3732b0b0185482192fb0f6d8cdb175b
出典データセット
uspto-grants-2013_04
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08410112B2

反応ノート

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