Potassium Carbonate → 3-[6-(9,9-Difluoro-7-{2-[5-(2-methoxycarbonylamino-3-methyl-butyryl)-5-aza-spiro[2.4]hept-6-yl]-3H-imidazol-4-yl}-9H-fluoren-2-yl)-1H-benzoimidazol-2-yl]-2-aza-bicyclo[2.2.1]heptane-2-carboxylic acid tert-butyl ester

Reaktionsgleichung

[CH3:1][O:2][C:3](=[O:39])[NH:4][CH:5]([C:9]([N:11]1[CH:17]([C:18]2[NH:19][C:20]([C:23]3[CH:35]=[CH:34][C:33]4[C:32]5[C:27](=[CH:28][C:29](Br)=[CH:30][CH:31]=5)[C:26]([F:38])([F:37])[C:25]=4[CH:24]=3)=[CH:21][N:22]=2)[CH2:16][C:13]2([CH2:15][CH2:14]2)[CH2:12]1)=[O:10])[CH:6]([CH3:8])[CH3:7].[C:40]([O:44][C:45]([N:47]1[CH:52]([C:53]2[NH:57][C:56]3[CH:58]=[C:59](B4OC(C)(C)C(C)(C)O4)[CH:60]=[CH:61][C:55]=3[N:54]=2)[CH:51]2[CH2:71][CH:48]1[CH2:49][CH2:50]2)=[O:46])([CH3:43])([CH3:42])[CH3:41].C([O-])([O-])=O.[K+].[K+]>COCCOC.O.CCOC(C)=O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[C:40]([O:44][C:45]([N:47]1[CH:52]([C:53]2[NH:57][C:56]3[CH:58]=[C:59]([C:29]4[CH:30]=[CH:31][C:32]5[C:33]6[C:25](=[CH:24][C:23]([C:20]7[NH:19][C:18]([CH:17]8[CH2:16][C:13]9([CH2:15][CH2:14]9)[CH2:12][N:11]8[C:9](=[O:10])[CH:5]([NH:4][C:3]([O:2][CH3:1])=[O:39])[CH:6]([CH3:8])[CH3:7])=[N:22][CH:21]=7)=[CH:35][CH:34]=6)[C:26]([F:38])([F:37])[C:27]=5[CH:28]=4)[CH:60]=[CH:61][C:55]=3[N:54]=2)[CH:51]2[CH2:71][CH:48]1[CH2:49][CH2:50]2)=[O:46])([CH3:43])([CH3:41])[CH3:42]

Komponenten

Reaktionsbedingungen

Temperatur: 87.5 °C

Versuchsvorschrift

(1-{6-[5-(7-Bromo-9,9-difluoro-9H-fluoren-2-yl)-1H-imidazol-2-yl]-5-aza-spiro[2.4]heptane-5-carbonyl}-2-methyl-propyl)-carbamic acid methyl ester (840 mg, 1.4 mmol), 3-[6-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-1H-benzoimidazol-2-yl]-2-aza-bicyclo[2.2.1]heptane-2-carboxylic acid tert-butyl ester (615 mg, 1.4 mmol), Pd(PPh3)4 (161 mg, 0.14 mmol), K2CO3 (579 mg, 4.2 mmol), were dissolved in DME (15 mL)/water (3 mL) under an argon atmosphere. The mixture was heated for 120 minutes at 85-90° C. (oil bath). After 120 minutes additional boronate ester (61 mg, 0.14 mmol) was added and heating was continued. After 3 hours, the reaction was cooled to room temperature. Most of the DME was removed in vacuo and the crude reaction mixture was diluted with EtOAc. The mixture was washed with brine and was dried over sodium sulfate. Filtration and evaporation of solvents gave the crude reaction product, which was purified via silica gel chromatography (eluent: EtOAc/hexanes) to yield the product 3-[6-(9,9-Difluoro-7-{2-[5-(2-methoxycarbonylamino-3-methyl-butyryl)-5-aza-spiro[2.4]hept-6-yl]-3H-imidazol-4-yl}-9H-fluoren-2-yl)-1H-benzoimidazol-2-yl]-2-aza-bicyclo[2.2.1]heptane-2-carboxylic acid tert-butyl ester (878 mg). LCMS-ESI+: calc'd for C47H51F2N7O5: 831.9 (M+). Found: 832.7 (M+H+).

Aufarbeitung

temperatureheating
temperaturethe reaction was cooled to room temperature
customMost of the DME was removed in vacuo
customthe crude reaction mixture
washThe mixture was washed with brine
dry with materialwas dried over sodium sulfate
filtrationFiltration and evaporation of solvents
customgave the crude
customreaction product, which
customwas purified via silica gel chromatography (eluent: EtOAc/hexanes)

Quellen und Nachweise

ORD-Eintrag: ord-7bd8930f796245268148e8bdd2594ba2
Quelldatensatz: uspto-grants-2014_09
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US08841278B2

Notizen zur Reaktion

Wird geladen…