1,2-Dichloroethane → (+/-)-N-[2-[4-(Triisopropylsilyloxy)benzyl]-3-(carbomethoxy)propionyl]serine benzyl ester

HRID 1815994Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1815994
[C:1]([CH:4]([CH2:10][C:11]1[CH:16]=[CH:15][C:14]([O:17][Si:18]([CH:25]([CH3:27])[CH3:26])([CH:22]([CH3:24])[CH3:23])[CH:19]([CH3:21])[CH3:20])=[CH:13][CH:12]=1)[CH2:5][C:6]([O:8][CH3:9])=[O:7])(O)=[O:2].Cl.[CH2:29]([O:36][C:37](=[O:42])[C@H:38]([CH2:40][OH:41])[NH2:39])[C:30]1[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=1.C1C=CC2N(O)N=NC=2C=1.CCN(CC)CC.C(Cl)CCl>CN(C=O)C>[CH2:29]([O:36][C:37](=[O:42])[C@H:38]([CH2:40][OH:41])[NH:39][C:1](=[O:2])[CH:4]([CH2:10][C:11]1[CH:12]=[CH:13][C:14]([O:17][Si:18]([CH:19]([CH3:21])[CH3:20])([CH:25]([CH3:26])[CH3:27])[CH:22]([CH3:24])[CH3:23])=[CH:15][CH:16]=1)[CH2:5][C:6]([O:8][CH3:9])=[O:7])[C:30]1[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=1

Komponenten

7

Edukt 5

HCID 111,2-DichloroethaneHCID 8471TriethylamineHCID 757711-HydroxybenzotriazoleHCID 12930233Benzyl L-serinate--hydrogen chloride (1/1)HCID 20775649Methyl (+/-)-3-carboxy-4-[4-(triisopropylsilyloxy)phenyl]butanoate

Produkt 1

HCID 20775644(+/-)-N-[2-[4-(Triisopropylsilyloxy)benzyl]-3-(carbomethoxy)propionyl]serine benzyl esterAusbeute 79 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

To a solution of methyl (±)-3-carboxy-4-[4-(triisopropylsilyloxy)phenyl]butanoate (5.00 g, 12.67 mmole) in dry DMF (60 mL) at RT was added serine benzyl ester hydrochloride (3.52 g, 15.21 mmole), HOBt (2.06 g, 15.21 mmole), Et3N (5.3 mL, 38.01 mmole), and EDC (2.92 g, 15.21 mmole). After 18 hr the mixture was concentrated. The residue was chromatographed on silica gel (80% EtOAc/hexanes) to give the title compound (5.76 mg, 79%) as a pale yellow oil: MS (ES) m/e 572 (M+H)+.

Aufarbeitung

  1. concentrationAfter 18 hr the mixture was concentrated
  2. customThe residue was chromatographed on silica gel (80% EtOAc/hexanes)

Quellen und Nachweise

ORD-Eintrag
ord-63d9e70464304b90b3186e55243a83cd
Quelldatensatz
uspto-grants-2005_04
Patentnummer
US06881736B1

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