Triethylamine → (E)-ethyl 3-(1-Ethyl-1,3,4,9-tetrahydro-1-(2-hydroxyethyl)-8-isopropylpyrano[3,4-b]indol-6-yl)acrylate

HRID 2249565Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2249565
CC1C=CC=CC=1P(C1C=CC=CC=1C)C1C=CC=CC=1C.Br[C:24]1[CH:25]=[C:26]2[C:30](=[C:31]([CH:33]([CH3:35])[CH3:34])[CH:32]=1)[NH:29][C:28]1[C:36]([CH2:42][CH2:43][OH:44])([CH2:40][CH3:41])[O:37][CH2:38][CH2:39][C:27]2=1.C(N(CC)CC)C.[C:52]([O:56][CH2:57][CH3:58])(=[O:55])[CH:53]=[CH2:54]>C(#N)C.CC([O-])=O.CC([O-])=O.[Pd+2]>[CH2:40]([C:36]1([CH2:42][CH2:43][OH:44])[C:28]2[NH:29][C:30]3[C:26]([C:27]=2[CH2:39][CH2:38][O:37]1)=[CH:25][C:24](/[CH:54]=[CH:53]/[C:52]([O:56][CH2:57][CH3:58])=[O:55])=[CH:32][C:31]=3[CH:33]([CH3:35])[CH3:34])[CH3:41]

Komponenten

7

Edukt 4

HCID 8471TriethylamineHCID 8821Ethyl AcrylateHCID 80271Tri-o-tolylphosphineHCID 111644512-(6-Bromo-1-ethyl-1,3,4,9-tetrahydro-8-isopropylpyrano[3,4-b]indol-1-yl)ethanol

Produkt 1

HCID 59639720(E)-ethyl 3-(1-Ethyl-1,3,4,9-tetrahydro-1-(2-hydroxyethyl)-8-isopropylpyrano[3,4-b]indol-6-yl)acrylateAusbeute 56,9 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 167845palladium(II) acetateKatalysatorHCID 6342AcetonitrileLösungsmittel

Reaktionsbedingungen

Temperatur
100 °C

Versuchsvorschrift

A suspension of Pd(OAc)2 (0.2 g, 0.8 Mmol), P(o-tolyl)3 (0.25 g, 0.8 mmol), 2-(6-bromo-1-ethyl-1,3,4,9-tetrahydro-8-isopropylpyrano[3,4-b]indol-1-yl)ethanol (1.5 g, 4.1 mmol), triethylamine (1.5 ml, 11 mmol), and ethyl acrylate (1.8 ml, 16 mmol) in acetonitrile (45 ml) and stirred under a nitrogen atmosphere at 100° C. for 24 hr. The mixture was allowed to cool, quenched with water, worked-up with dichloromethane, and washed with brine. The organic layers were dried over MgSO4 and concentrated under reduced pressure. The crude product was chromatographed on silica hexane/EtOAc (6:4) to give the product (0.9 g, 56%). %). 1H NMR (300 MHz, CDCl3) δ 8.07 (br, NH), 7.83 (d, 1H), 7.53 (d, 1H), 7.28 (d, 1H), 6.43 (d, 1H), 4.27 (m, 2H), 4.04 (m, 2H), 3.73 (m, 2H), 3.19 (m, 1H), 2.84 (m, 1), 2.77 (d, 1H), 2.52 (br, 1H), 2.20 (m, 1H), 2.09 (m, 1H), 1.92 (m, 1H), 1.38 (d, 6H), 1.35 (t, 3H), 0.95 (t, 3H); ESI (+) MS m/e=386 (MH+), ESI (−) MS m/e=384 (MH−).

Aufarbeitung

  1. temperatureto cool
  2. customquenched with water
  3. washwashed with brine
  4. dry with materialThe organic layers were dried over MgSO4
  5. concentrationconcentrated under reduced pressure
  6. customThe crude product was chromatographed on silica hexane/EtOAc (6:4)

Quellen und Nachweise

ORD-Eintrag
ord-929982d6f86f4eb4b2889fcd9a70deb9
Quelldatensatz
uspto-grants-2008_01
Patentnummer
US07314886B2

Notizen zur Reaktion

Wird geladen…