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Water → (2S)-methyl 2-(7-(4-allyl-5-chloro-3,4-dihydro-2H-benzo[b][1,4]oxazin-6-yl)-2-(3'-(allyloxy)-[1,1'-biphenyl]-3-yl)-5-methylpyrazolo[1,5-a]pyrimidin-6-yl)-2-(tert-butoxy)acetate

HRID 1400696
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1400696
[CH2:1]([N:4]1[CH2:9][CH2:8][O:7][C:6]2[CH:10]=[CH:11][C:12]([C:15]3[N:20]4[N:21]=[C:22]([C:24]5[CH:25]=[C:26]([C:30]6[CH:35]=[CH:34][CH:33]=[C:32]([OH:36])[CH:31]=6)[CH:27]=[CH:28][CH:29]=5)[CH:23]=[C:19]4[N:18]=[C:17]([CH3:37])[C:16]=3[C@H:38]([O:43][C:44]([CH3:47])([CH3:46])[CH3:45])[C:39]([O:41][CH3:42])=[O:40])=[C:13]([Cl:14])[C:5]1=2)[CH:2]=[CH2:3].C([O-])([O-])=O.[K+].[K+].Br[CH2:55][CH:56]=[CH2:57].O>CN(C=O)C>[CH2:1]([N:4]1[CH2:9][CH2:8][O:7][C:6]2[CH:10]=[CH:11][C:12]([C:15]3[N:20]4[N:21]=[C:22]([C:24]5[CH:25]=[C:26]([C:30]6[CH:35]=[CH:34][CH:33]=[C:32]([O:36][CH2:57][CH:56]=[CH2:55])[CH:31]=6)[CH:27]=[CH:28][CH:29]=5)[CH:23]=[C:19]4[N:18]=[C:17]([CH3:37])[C:16]=3[C@H:38]([O:43][C:44]([CH3:47])([CH3:46])[CH3:45])[C:39]([O:41][CH3:42])=[O:40])=[C:13]([Cl:14])[C:5]1=2)[CH:2]=[CH2:3]
KomponentenReaktionsbedingungenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 4

HCID 962WaterHCID 7841Allyl bromideHCID 11430Potassium CarbonateHCID 86710748(2S)-methyl 2-(7-(4-allyl-5-chloro-3,4-dihydro-2H-benzo[b][1,4]oxazin-6-yl)-2-(3'-hydroxy-[1,1'-biphenyl]-3-yl)-5-methylpyrazolo[1,5-a]pyrimidin-6-yl)-2-(tert-butoxy)acetate

Produkt 1

HCID 86710747
(2S)-methyl 2-(7-(4-allyl-5-chloro-3,4-dihydro-2H-benzo[b][1,4]oxazin-6-yl)-2-(3'-(allyloxy)-[1,1'-biphenyl]-3-yl)-5-methylpyrazolo[1,5-a]pyrimidin-6-yl)-2-(tert-butoxy)acetate
Ausbeute 42 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Reaktionsbedingungen

Temperatur
50 °C

Versuchsvorschrift

To a solution of (2S)-methyl 2-(7-(4-allyl-5-chloro-3,4-dihydro-2H-benzo[b][1,4]oxazin-6-yl)-2-(3′-hydroxy-[1,1′-biphenyl]-3-yl)-5-methylpyrazolo[1,5-a]pyrimidin-6-yl)-2-(tert-butoxy)acetate (90 mg, 0.138 mmol) in DMF (2 mL) was added K2CO3 (38.1 mg, 0.276 mmol) followed by 3-bromoprop-1-ene (0.017 mL, 0.207 mmol) and the resulting mixture was heated at 50° C. for 16 h. After cooling to room temperature, water was added and the mixture was extracted with ether (50 mL), washed with brine, dried (Na2SO4), filtered and concentrated. Crude was then purified by biotage (5-30% EtOAc/hexane) to afford (2S)-methyl 2-(7-(4-allyl-5-chloro-3,4-dihydro-2H-benzo[b][1,4]oxazin-6-yl)-2-(3′-(allyloxy)-[1,1′-biphenyl]-3-yl)-5-methylpyrazolo[1,5-a]pyrimidin-6-yl)-2-(tert-butoxy)acetate (40 mg, 0.058 mmol, 41.9% yield) as white solid. 28 mg of starting material was also recovered. 1H NMR (500 MHz, CDCl3) δ: 8.05 (t, J=1.6 Hz, 1H), 7.84 (dt, J=7.7, 1.4 Hz, 1H), 7.57-7.53 (m, 1H), 7.45 (t, J=7.6 Hz, 1H), 7.37 (t, J=7.9 Hz, 1H), 7.23-7.20 (m, 1H), 7.19-7.16 (m, 1H), 7.03-6.97 (m, 2H), 6.96-6.92 (m, 2H), 6.17-6.00 (m, 2H), 5.50-5.44 (m, 1H), 5.39-5.29 (m, 3H), 5.25 (dd, J=10.2, 1.6 Hz, 1H), 5.09 (s, 1H), 4.62 (dt, J=5.3, 1.4 Hz, 2H), 4.27 (t, J=4.4 Hz, 2H), 3.67 (s, 3H), 3.27-3.17 (m, 2H), 2.86 (s, 3H), 1.19 (s, 9H). LCMS (M+H)=693.4.

Aufarbeitung

  1. temperatureAfter cooling to room temperature
  2. extractionthe mixture was extracted with ether (50 mL)
  3. washwashed with brine
  4. dry with materialdried (Na2SO4)
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customCrude was then purified by biotage (5-30% EtOAc/hexane)

Quellen und Nachweise

ORD-Eintrag
ord-a877b0a4d0ea403cabcc505aa154cf23
Quelldatensatz
uspto-grants-2014_12
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08906929B2

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