Pyridine → (1R,2S)-1-{[5-(2,4-dichlorophenyl)-3,6-diethylpyrazin-2-yl]amino}-2,3-dihydro-1H-inden-2-yl acetate

HRID 1612124

Reaktionsgleichung

Reaktionsgleichung von HRID 1612124
[Cl:1][C:2]1[CH:7]=[C:6]([Cl:8])[CH:5]=[CH:4][C:3]=1[C:9]1[N:10]=[C:11]([CH2:28][CH3:29])[C:12]([NH:17][C@@H:18]2[C:26]3[C:21](=[CH:22][CH:23]=[CH:24][CH:25]=3)[CH2:20][C@@H:19]2[OH:27])=[N:13][C:14]=1[CH2:15][CH3:16].N1C=CC=CC=1.[C:36](Cl)(=[O:38])[CH3:37]>ClCCl>[C:36]([O:27][C@H:19]1[CH2:20][C:21]2[C:26](=[CH:25][CH:24]=[CH:23][CH:22]=2)[C@H:18]1[NH:17][C:12]1[C:11]([CH2:28][CH3:29])=[N:10][C:9]([C:3]2[CH:4]=[CH:5][C:6]([Cl:8])=[CH:7][C:2]=2[Cl:1])=[C:14]([CH2:15][CH3:16])[N:13]=1)(=[O:38])[CH3:37]

Komponenten

5

Edukt 3

HCID 1049PyridineHCID 6367Acetyl chlorideHCID 58583246(1R,2S)-1-{[5-(2,4-dichlorophenyl)-3,6-diethylpyrazin-2-yl]amino}-2,3-dihydro-1H-inden-2-ol

Produkt 1

HCID 10288660(1R,2S)-1-{[5-(2,4-dichlorophenyl)-3,6-diethylpyrazin-2-yl]amino}-2,3-dihydro-1H-inden-2-yl acetate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Reaktionsbedingungen

Temperatur
0 °C

Versuchsvorschrift

A solution of (1R,2S)-1-{[5-(2,4-dichlorophenyl)-3,6-diethylpyrazin-2-yl]amino}-2,3-dihydro-1H-inden-2-ol (214 mg, 0.5 mmol) and pyridine (44 μL, 0.55 mmol) in dichloromethane (5 mL) was purged with nitrogen and cooled to 0° C. The light yellow homogenous solution was treated with acetyl chloride (34 μL, 0.48 mmol) with no visible change. The reaction mixture was gradually warmed to RT. After 16 hrs, the volatiles were removed under reduced pressure and the resulting residue was absorbed on 4 g silica gel and purified by Biotage MPLC (40 g column, 15% ethyl acetate/heptane) to afford the title compound as an off-white solid. IR (diffuse reflectance) 2971, 2934, 1743, 1568, 1550, 1498, 1467, 1393, 1372, 1238, 1207, 1177, 1101, 1036, 751 cm−1; OAMS supporting ions at: ESI+ 470.1; MS (EI) m/z 469 (M+); HRMS (FAB) calcd for C25H25CL2N3O2+H1 470.1402, found 470.1404. [α]25D=73 (c 0.60, methylene chloride); Anal. Calcd for C25H25Cl2N3O2: C, 63.83; H, 5.36; N, 8.93. Found: C, 63.45; H, 5.40; N, 8.79.

Aufarbeitung

  1. temperatureThe reaction mixture was gradually warmed to RT
  2. customthe volatiles were removed under reduced pressure
  3. customthe resulting residue was absorbed on 4 g silica gel
  4. custompurified by Biotage MPLC (40 g column, 15% ethyl acetate/heptane)

Quellen und Nachweise

ORD-Eintrag
ord-4433d1fc2c424f54b3de2f71a38b1039
Quelldatensatz
uspto-grants-2006_01
Patentnummer
US06992087B2

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