Triethylamine → (2R)-2-[[4-(2-Bromo-acetylamino)-benzyl]-(4-chlorobenzenesulfonyl)-amino]-4-methyl-pentanoic acid amide

HRID 507322Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 507322
[NH2:1][C:2]1[CH:27]=[CH:26][C:5]([CH2:6][N:7]([S:16]([C:19]2[CH:24]=[CH:23][C:22]([Cl:25])=[CH:21][CH:20]=2)(=[O:18])=[O:17])[C@H:8]([CH2:12][CH:13]([CH3:15])[CH3:14])[C:9]([NH2:11])=[O:10])=[CH:4][CH:3]=1.CCN(CC)CC.[Br:35][CH2:36][C:37](Cl)=[O:38]>C(Cl)Cl>[Br:35][CH2:36][C:37]([NH:1][C:2]1[CH:27]=[CH:26][C:5]([CH2:6][N:7]([S:16]([C:19]2[CH:20]=[CH:21][C:22]([Cl:25])=[CH:23][CH:24]=2)(=[O:18])=[O:17])[C@H:8]([CH2:12][CH:13]([CH3:15])[CH3:14])[C:9]([NH2:11])=[O:10])=[CH:4][CH:3]=1)=[O:38]

Komponenten

5

Edukt 3

HCID 8471TriethylamineHCID 89602Bromoacetyl chlorideHCID 59001017(2R)-2-[(4-aminobenzyl)-(4-chloro-benzenesulfonyl)amino]-4-methyl-pentanoic acid amide

Produkt 1

HCID 10218145(2R)-2-[[4-(2-Bromo-acetylamino)-benzyl]-(4-chlorobenzenesulfonyl)-amino]-4-methyl-pentanoic acid amideAusbeute 42 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel2×

Versuchsvorschrift

To a solution of (2R)-2-[(4-aminobenzyl)-(4-chloro-benzenesulfonyl)amino]-4-methyl-pentanoic acid amide (248 mg, 0.56 mmol) and Et3N (176 mg, 1.74 mmol) in CH2Cl2 (3 mL) was added bromoacetylchloride (105 mg, 0.67 mmol). The reaction mixture was stirred overnight at rt. The reaction mixture was diluted with CH2Cl2 (5 mL), washed with 1 N HCl, brine, and dried through a cotton plug. The solvent was removed in vacuo. Purification by flash chromatography (SiO2, 10% acetone/CH2Cl2) afforded the title compound (124 mg) in 42% yield. MS (ESI), (M+H)+ 531.86, 1H NMR (CDCl3, 400 MHz) δ 8.78 (br s, NH), 7.95 (d, 2H, J=8.0), 7.82 (d, 2H, J=8.0), 7.42 (d, 2H, J=8.0), 7.33 (d, 2H, J=8.0), 6.20 (br s, 1H), 5.20 (br s, 1H), 4.30 (s, 2H), 4.22 (d, 1H, Jab=16), 4.14 (d, 1H, Jab=16), 3.25 (t, 1H, J=6.0), 1.95 (m, 1H), 1.60 (m, 2H), 0.98 (d, 3H, J=7.0), 0.94 (d, 3H, J=7.0)

Aufarbeitung

  1. washwashed with 1 N HCl, brine
  2. customdried through a cotton plug
  3. customThe solvent was removed in vacuo
  4. customPurification by flash chromatography (SiO2, 10% acetone/CH2Cl2)

Quellen und Nachweise

ORD-Eintrag
ord-bb1a2d54637e4b6aa621b2dbaae4a715
Quelldatensatz
uspto-grants-2010_08
Patentnummer
US07786122B2

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