Potassium tert-butoxide → 2-Benzyl-5-methoxy-8-methylene-1,2,3,3a,8,8a-hexahydroindeno[1,2-c]pyrrole

HRID 546281Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 546281
[CH3:1]C(C)([O-])C.[K+].[CH2:7]([N:14]1[CH2:28][CH:17]2[C:18]3[CH:19]=[C:20]([O:26][CH3:27])[CH:21]=[CH:22][C:23]=3[C:24](=O)[CH:16]2[CH2:15]1)[C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1>[Br-].C[P+](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.CCOCC>[CH2:7]([N:14]1[CH2:15][CH:16]2[C:24](=[CH2:1])[C:23]3[CH:22]=[CH:21][C:20]([O:26][CH3:27])=[CH:19][C:18]=3[CH:17]2[CH2:28]1)[C:8]1[CH:9]=[CH:10][CH:11]=[CH:12][CH:13]=1

Komponenten

5

Edukt 2

HCID 23665647Potassium tert-butoxideHCID 672034582-Benzyl-5-methoxy-2,3,3a,8a-tetrahydro-1H-2-aza-cyclopenta[a]inden-8-one

Produkt 1

HCID 672038462-Benzyl-5-methoxy-8-methylene-1,2,3,3a,8,8a-hexahydroindeno[1,2-c]pyrrole

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 74505Methyltriphenyliphosphonium bromideKatalysatorHCID 3283Diethyl EtherLösungsmittel

Versuchsvorschrift

Methyltriphenylphosphonium bromide (18.1 g, 50.7 mmol) and potassium tert-butoxide (5.7 g, 50.7) were added to a solution of 2-benzyl-5-methoxy-2,3,3a,8a-tetrahydro-1H-2-aza-cyclopenta[a]inden-8-one (9.9 g, 33.8 mmol) in anhydrous ether (68 mL). The reaction mixture was stirred for 1 hour at room temperature then filtered through celite. The celite was washed with ether (200 mL), and the filtrate was concentrated. The crude product was purified by column chromatography (SiO2) using a 0-35% ethyl acetate-hexanes gradient to afford 8.1 g (82%-two steps) of the subtitle compound. MS calculated for C20H21NO+H: 292, observed: 292.

Aufarbeitung

  1. filtrationthen filtered through celite
  2. washThe celite was washed with ether (200 mL)
  3. concentrationthe filtrate was concentrated
  4. customThe crude product was purified by column chromatography (SiO2)

Quellen und Nachweise

ORD-Eintrag
ord-289deff3f4f54a26b4cfbc8e29841b12
Quelldatensatz
uspto-grants-2011_05
Patentnummer
US07935830B2

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