Hydrochloric Acid → (S)-3-[4-(3,4-Dichloro-benzyloxy)-phenyl]-1-methyl-2-oxo-1,2,3,5,7,8-hexahydro-4-oxa-1,6-diaza-anthracene-6,7-dicarboxylic acid 6-tert-butyl ester

HRID 1427927Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1427927
C[O:2][C:3]([CH:5]1[CH2:18][C:17]2[CH:16]=[C:15]3[C:10]([O:11][C@@H:12]([C:21]4[CH:26]=[CH:25][C:24]([O:27][CH2:28][C:29]5[CH:34]=[CH:33][C:32]([Cl:35])=[C:31]([Cl:36])[CH:30]=5)=[CH:23][CH:22]=4)[C:13](=[O:20])[N:14]3[CH3:19])=[CH:9][C:8]=2[CH2:7][N:6]1[C:37]([O:39][C:40]([CH3:43])([CH3:42])[CH3:41])=[O:38])=[O:4].[OH-].[Li+].Cl>C1COCC1.CO>[C:40]([O:39][C:37]([N:6]1[CH:5]([C:3]([OH:4])=[O:2])[CH2:18][C:17]2[CH:16]=[C:15]3[C:10]([O:11][C@@H:12]([C:21]4[CH:26]=[CH:25][C:24]([O:27][CH2:28][C:29]5[CH:34]=[CH:33][C:32]([Cl:35])=[C:31]([Cl:36])[CH:30]=5)=[CH:23][CH:22]=4)[C:13](=[O:20])[N:14]3[CH3:19])=[CH:9][C:8]=2[CH2:7]1)=[O:38])([CH3:43])([CH3:41])[CH3:42]

Komponenten

5

Edukt 3

HCID 313Hydrochloric AcidHCID 3939Lithium HydroxideHCID 66922872(S)-3-[4-(3,4-Dichloro-benzyloxy)-phenyl]-1-methyl-2-oxo-1,2,3,5,7,8-hexahydro-4-oxa-1,6-diaza-anthracene-6,7-dicarboxylic acid 6-tert-butyl ester 7-methyl ester

Produkt 1

HCID 66922697(S)-3-[4-(3,4-Dichloro-benzyloxy)-phenyl]-1-methyl-2-oxo-1,2,3,5,7,8-hexahydro-4-oxa-1,6-diaza-anthracene-6,7-dicarboxylic acid 6-tert-butyl esterAusbeute 98,9 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 21899815MeOH tetrahydrofuranLösungsmittel

Reaktionsbedingungen

Temperatur
0 °C

Versuchsvorschrift

(S)-3-[4-(3,4-Dichloro-benzyloxy)-phenyl]-1-methyl-2-oxo-1,2,3,5,7,8-hexahydro-4-oxa-1,6-diaza-anthracene-6,7-dicarboxylic acid 6-tert-butyl ester 7-methyl ester (3.0 g) was dissolved in THF-methanol (4:1, 10 mL), 2 N lithium hydroxide solution (4.8 mL) was added, and the resulting reaction mixture was stirred at 0° C. for 5 h. The reaction mixture was neutralized with 1N HCl and extracted with ethyl acetate. The organic layer was washed with brine, dried over sodium sulfate, and the solvent was removed under reduced pressure to afford (S)-3-[4-(3,4-Dichloro-benzyloxy)-phenyl]-1-methyl-2-oxo-1,2,3,5,7,8-hexahydro-4-oxa-1,6-diaza-anthracene-6,7-dicarboxylic acid 6-tert-butyl ester (2.9 g). LC-MS (m/z) 614. The Boc group of (S)-3-[4-(3,4-Dichloro-benzyloxy)-phenyl]-1-methyl-2-oxo-1,2,3,5,7,8-hexahydro-4-oxa-1,6-diaza-anthracene-6,7-dicarboxylic acid 6-tert-butyl ester 7-methyl ester may be removed to provide the compound Intermediate C (“Intermediate C”).

Aufarbeitung

  1. customthe resulting reaction mixture
  2. extractionextracted with ethyl acetate
  3. washThe organic layer was washed with brine
  4. dry with materialdried over sodium sulfate
  5. customthe solvent was removed under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-facaefabbde542fbb32665323bb7c19d
Quelldatensatz
uspto-grants-2015_01
Patentnummer
US08933222B2

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