Dimethylformamide → HCID 178501055、化合物

HRID 448963ノート

反応式

HRID 448963 の反応式
[Cl:1][C:2]1[C:3]([CH2:8][NH:9][C:10]([C@H:12]2[CH2:17][CH2:16][C@H:15]([C:18]([O:20][CH3:21])=[O:19])[CH2:14][CH2:13]2)=O)=[N:4][CH:5]=[CH:6][N:7]=1.CN(C=O)C.O=P(Cl)(Cl)Cl>CC#N>[Cl:1][C:2]1[C:3]2[N:4]([C:10]([C@H:12]3[CH2:17][CH2:16][C@H:15]([C:18]([O:20][CH3:21])=[O:19])[CH2:14][CH2:13]3)=[N:9][CH:8]=2)[CH:5]=[CH:6][N:7]=1

参加物

5

反応物 3

HCID 6228DimethylformamideHCID 24813Phosphorus oxychlorideHCID 178501155HCID 178501155、化合物

生成物 1

HCID 178501055HCID 178501055、化合物

試薬・触媒・溶媒 1

HCID 6342Acetonitrile溶媒

実験手順

trans-Methyl 4-({[(3-chloropyrazin-2-yl)methyl]amino}carbonyl)-cyclohexane carboxylate (29.00 g, 93.02 mmol) was dissolved in anhydrous MeCN (930 mL), anhydrous DMF (9 mL) and POCl3 (10.4 mL, 110 mmol) and heated at 55° C. under nitrogen for 3 h. The reaction mixture was concentrated in vacuo, then, the solid residue was taken up in DCM, then, basified to pH 10 with 2M ammonia in isopropanol. The mixture was concentrated in vacuo, re-dissolved in DCM, and then loaded onto TEA-basified silica gel. The crude product was purified by a silica gel column chromatography (eluted with 2:3 EtOAc/DCM) to obtain the title compound as a yellow powder; 1H NMR (CDCl3, 400 MHz) δ 1.63 (ddd, J=13.2, 13.2, 13.2, 3.2 Hz, 2H), 1.85 (ddd, J=13.2, 13.2, 13.2, 2.8 Hz, 2H), 2.10 (dd, J=14.4, 3.2 Hz, 2H), 2.19 (dd, J=14.0, 3.2 Hz, 2H), 2.46 (tt, J=12.4, 3.6 Hz, 1H), 2.96 (tt, J=11.6, 3.2 Hz, 1H), 3.70 (s, 3H), 7.33 (dd, J=5.2, 1.2 Hz, 1H), 7.61 (d, J=4.8 Hz, 1H), 7.79 (s, 1H). MS (ES+): m/z 294.17/296.14 (100/86) [MH+]. HPLC: tR=2.85 min (OpenLynx, polar—5 min).

後処理

  1. concentrationThe reaction mixture was concentrated in vacuo
  2. concentrationThe mixture was concentrated in vacuo
  3. dissolutionre-dissolved in DCM
  4. customThe crude product was purified by a silica gel column chromatography (eluted with 2:3 EtOAc/DCM)

出典と根拠

ORDレコード
ord-b5ee0d79d43d44ac80ba20a6e13a3997
出典データセット
uspto-grants-2013_07
特許番号
US08481733B2

反応ノート

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