Trifluoroacetic acid → (S)-N-(2,2-dimethyl-1-(3-methyl-1,2,4-oxadiazol-5-yl)propyl)-3-phenyl-5,6,7,8-tetrahydroimidazo[1,5-a]pyrazine-1-carboxamide

HRID 535941ノート

反応式

HRID 535941 の反応式
[CH3:1][C:2]([CH3:36])([CH3:35])[C@H:3]([NH:10][C:11]([C:13]1[N:14]=[C:15]([C:29]2[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=2)[N:16]2[CH2:21][CH2:20][N:19](C(OC(C)(C)C)=O)[CH2:18][C:17]=12)=[O:12])[C:4]1[O:8][N:7]=[C:6]([CH3:9])[N:5]=1.C(O)(C(F)(F)F)=O>C(Cl)Cl>[CH3:1][C:2]([CH3:36])([CH3:35])[C@H:3]([NH:10][C:11]([C:13]1[N:14]=[C:15]([C:29]2[CH:30]=[CH:31][CH:32]=[CH:33][CH:34]=2)[N:16]2[CH2:21][CH2:20][NH:19][CH2:18][C:17]=12)=[O:12])[C:4]1[O:8][N:7]=[C:6]([CH3:9])[N:5]=1

参加物

4

反応物 2

HCID 6422Trifluoroacetic acidHCID 57635507(S)-tert-butyl 1-(2,2-dimethyl-1-(3-methyl-1,2,4-oxadiazol-5-yl)propylcarbamoyl)-3-phenyl-5,6-dihydroimidazo[1,5-a]pyrazine-7(8H)-carboxylate

生成物 1

HCID 57635129(S)-N-(2,2-dimethyl-1-(3-methyl-1,2,4-oxadiazol-5-yl)propyl)-3-phenyl-5,6,7,8-tetrahydroimidazo[1,5-a]pyrazine-1-carboxamide収率 93.2%

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒

実験手順

Intermediate 22D (170 mg, 0.34 mmol) was dissolved in DCM (2 mL) and TFA (0.5 mL) was added. The resulting mixture was stirred for 2 h. The mixture was concentrated, neutralized with NaHCO3 saturated solution and extracted several times with EtOAc. The combined organic extracts were washed successively with water and brine, dried over anhydrous Na2SO4, filtered and concentrated to give of Compound 282 (125 mg, 87%). 1H-NMR (400 MHz, CDCl3-d) δ: 1.09 (s, 9H), 2.40 (s, 3H), 3.78 (m, 2H), 4.11 (m, 2H), 5.01 (m, 2H), 5.37 (d, 1H), 7.35 (m, 3H), 7.64 (m, 2H), 7.78 (d, 1H), LCMS (+ESI) m/z 395.0 [M+H]+.

後処理

  1. concentrationThe mixture was concentrated
  2. extractionextracted several times with EtOAc
  3. washThe combined organic extracts were washed successively with water and brine
  4. dry with materialdried over anhydrous Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated

出典と根拠

ORDレコード
ord-1905340607d4487f94122b4985770283
出典データセット
uspto-grants-2014_10
特許番号
US08859538B2

反応ノート

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