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1,1'-Carbonyldiimidazole → 1,3-Dioxo-2-[(1S,2R)-2-phenylcyclopropyl]-N-(4-phenylisoxazol-5-yl)hexahydroimidazo[1,5-a]pyrazine-7(1H)-carboxamide

HRID 1260475
ノート
印刷プレビュー

反応式

HRID 1260475 の反応式
[C:1]1([C:7]2[CH:8]=[N:9][O:10][C:11]=2[NH2:12])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[Li+].C[Si]([N-][Si](C)(C)C)(C)C.C1N=CN([C:28](N2C=NC=C2)=[O:29])C=1.[C:35]1([C@@H:41]2[CH2:43][C@H:42]2[N:44]2[C:52](=[O:53])[CH:47]3[CH2:48][NH:49][CH2:50][CH2:51][N:46]3[C:45]2=[O:54])[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=1>C1COCC1>[O:53]=[C:52]1[CH:47]2[CH2:48][N:49]([C:28]([NH:12][C:11]3[O:10][N:9]=[CH:8][C:7]=3[C:1]3[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=3)=[O:29])[CH2:50][CH2:51][N:46]2[C:45](=[O:54])[N:44]1[C@H:42]1[CH2:43][C@@H:41]1[C:35]1[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=1
参加物実験手順後処理出典と根拠反応ノート

参加物

6

反応物 4

HCID 682631,1'-CarbonyldiimidazoleHCID 2733832Lithium hexamethyldisilazaneHCID 27487854-Phenyl-1,2-oxazol-5-amineHCID 673000522-[trans-2-phenylcyclopropyl]tetrahydroimidazo[1,5-a]pyrazine-1,3(2H,5H)-dione

生成物 1

HCID 461819261,3-Dioxo-2-[(1S,2R)-2-phenylcyclopropyl]-N-(4-phenylisoxazol-5-yl)hexahydroimidazo[1,5-a]pyrazine-7(1H)-carboxamide収率 30%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

実験手順

4-Phenylisoxazol-5-amine (2 eq) was dissolved in THF (0.1M) and treated with LiHMDS (0.1N, 2 eq), after stirring for 1 h CDI (1 eq) was added. The suspension was stirred for a further 2 h and then A5 (1 eq, 0.1 M) was added and the reaction stirred 5 h. The reaction was quenched with sat. aq. NH4Cl solution and then extracted with EtOAc. Organic layers were washed with brine, dried and concentrated under reduced pressure. The crude material was purified by preparative RP-HPLC using H2O (0.1% TFA) and MeCN (0.1% TFA) as eluents. The desired fractions were lyophilized to afford the title compound in 30% yield. 1H NMR (400 MHz, DMSO, 300K) δ 9.68 (1H, s), 9.00 (1H, s), 7.54 (2H, m), 7.43 (2H, m), 7.30 (3H, m), 7.23 (3H, m), 4.35 (1H, m), 4.16-4.06 (2H, m), 3.17-2.88 (3H, m), 2.69 (1H, m), 2.42-2.31 (1H, m), 1.61-1.49 (1H, m), 1.45-1.39 (1H, m). MS (ES+) C25H23N5O4 requires 457, found: 458 (M+H)+.

後処理

  1. additionwas added
  2. stirringthe reaction stirred 5 h
  3. customThe reaction was quenched with sat. aq. NH4Cl solution
  4. extractionextracted with EtOAc
  5. washOrganic layers were washed with brine
  6. customdried
  7. concentrationconcentrated under reduced pressure
  8. customThe crude material was purified by preparative RP-HPLC

出典と根拠

ORDレコード
ord-59d665ed2e5a468dbd48720e90973210
出典データセット
uspto-grants-2013_06
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08470823B2

反応ノート

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