Sodium Carbonate → tert-Butyl 4-(6-(tert-butoxycarbonylamino)-5-(5-phenyl-1,3,4-oxadiazol-2-yl)pyridin-3-yl)-5,6-dihydropyridine-1(2H)-carboxylate

HRID 509530ノート

反応式

HRID 509530 の反応式
Br[C:2]1[CH:3]=[C:4]([C:23]2[O:24][C:25]([C:28]3[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=3)=[N:26][N:27]=2)[C:5]([N:8]([C:16]([O:18][C:19]([CH3:22])([CH3:21])[CH3:20])=[O:17])C(=O)OC(C)(C)C)=[N:6][CH:7]=1.CC1(C)C(C)(C)OB([C:42]2[CH2:43][CH2:44][N:45]([C:48]([O:50][C:51]([CH3:54])([CH3:53])[CH3:52])=[O:49])[CH2:46][CH:47]=2)O1.C(P(CC)CC)C.C([O-])([O-])=O.[Na+].[Na+]>CN(C=O)C.C(Cl)Cl.O.Cl[Pd]Cl>[C:19]([O:18][C:16]([NH:8][C:5]1[N:6]=[CH:7][C:2]([C:42]2[CH2:47][CH2:46][N:45]([C:48]([O:50][C:51]([CH3:54])([CH3:53])[CH3:52])=[O:49])[CH2:44][CH:43]=2)=[CH:3][C:4]=1[C:23]1[O:24][C:25]([C:28]2[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=2)=[N:26][N:27]=1)=[O:17])([CH3:22])([CH3:21])[CH3:20]

参加物

9

反応物 4

HCID 10340Sodium CarbonateHCID 27365TriethylphosphineHCID 4642098Tert-butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,2,3,6-tetrahydropyridine-1-carboxylateHCID 67481749tert-Butyl N-[5-bromo-3-(5-phenyl-1,3,4-oxadiazol-2-yl)-2-pyridyl]-N-tert-butoxycarbonyl-carbamate

生成物 1

HCID 68104454tert-Butyl 4-(6-(tert-butoxycarbonylamino)-5-(5-phenyl-1,3,4-oxadiazol-2-yl)pyridin-3-yl)-5,6-dihydropyridine-1(2H)-carboxylate収率 47%

試薬・触媒・溶媒 4

HCID 24290Palladium Chloride触媒HCID 962Water溶媒HCID 6228Dimethylformamide溶媒HCID 6344Dichloromethane溶媒

反応条件

温度
140 °C

実験手順

A mixture of tert-butyl N-[5-bromo-3-(5-phenyl-1,3,4-oxadiazol-2-yl)-2-pyridyl]-N-tert-butoxycarbonyl-carbamate (300 mg, 0.5799 mmol), tert-butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,6-dihydro-2H-pyridine-1-carboxylate (215.2 mg, 0.6959 mmol), dichloropalladium; triethylphosphane (12.00 mg, 0.02900 mmol) and Na2CO3 (184.4 mg, 1.740 mmol) in DMF (3.000 mL) was heated to 60° C. for 16 hours. Analysis indicated that there was starting material remaining so the reaction was heated to 140° C. in the microwave for a further 2 hours. The reaction mixture was allowed to cool to ambient temperature, diluted with DCM and water and the two layers separated. The organics were washed with 1M NaOH solution, dried (Na2SO4), filtered and concentrated in vacuo. The resultant residue was purified by column chromatography (EtOAc/Petroleum ether) to give the desired product that was used directly in the next step without further purification (142 mg, 47% Yield). MS (ES+) 302.31.

後処理

  1. temperatureto cool to ambient temperature
  2. customthe two layers separated
  3. washThe organics were washed with 1M NaOH solution
  4. dry with materialdried (Na2SO4)
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe resultant residue was purified by column chromatography (EtOAc/Petroleum ether)

出典と根拠

ORDレコード
ord-bacf1db075254aa58a4530659ff18f2b
出典データセット
uspto-grants-2015_08
特許番号
US09096584B2

反応ノート

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