2-Oxopropanethioamide → 6'-Bromo-5-methyl-2'',3'',5'',6''-tetrahydro-3'H-dispiro[imidazole-2,1'-indene-2',4''-pyran]-4(3H)-thione

HRID 1965102Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1965102
[Br:1][C:2]1[CH:15]=[C:14]2[C:5]([CH2:6][C:7]3([C:13]2=[NH:16])[CH2:12][CH2:11][O:10][CH2:9][CH2:8]3)=[CH:4][CH:3]=1.O=[C:18]([CH3:22])[C:19](=[S:21])[NH2:20]>CO>[Br:1][C:2]1[CH:15]=[C:14]2[C:5]([CH2:6][C:7]3([C:13]42[NH:20][C:19](=[S:21])[C:18]([CH3:22])=[N:16]4)[CH2:12][CH2:11][O:10][CH2:9][CH2:8]3)=[CH:4][CH:3]=1

Komponenten

4

Edukt 2

HCID 207652372-Oxopropanethioamide2×HCID 679795066-Bromo-2',3',5',6'-tetrahydrospiro[indene-2,4'-pyran]-1(3H)-imine

Produkt 1

HCID 866672736'-Bromo-5-methyl-2'',3'',5'',6''-tetrahydro-3'H-dispiro[imidazole-2,1'-indene-2',4''-pyran]-4(3H)-thioneAusbeute 125,5 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 887MethanolLösungsmittel

Reaktionsbedingungen

Temperatur
60 °C

Versuchsvorschrift

6-Bromo-2′,3′,5′,6′-tetrahydrospiro[indene-2,4′-pyran]-1(3 H)-imine (Example 25 Step 2, 235 mg, 0.84 mmol) and 2-oxopropanethioamide (Intermediate 2, 173 mg, 1.68 mmol) were taken up in anhydrous MeOH (5 mL) and the resulting mixture was stirred at 60° C. under a nitrogen atmosphere for 3 h. When cooled to r.t. the mixture was concentrated and purified on a silica gel column eluted with 0-50% EtOAc in heptane to give 385 mg (95% yield) of the title compound; 1H NMR (500 MHz, DMSO-d6) δ ppm 12.40 (br. s, 1 H), 7.53 (dd, 1 H), 7.36 (d, 1 H), 7.03 (d, 1 H), 3.71 (td, 2 H), 3.44 (m, 2 H), 3.15 (m, 2 H), 2.29 (s, 3 H), 1.64 (s, 1 H), 1.55 (s, 1 H), 1.27 (m, 2 H); MS (ES+) m/z 365 [M+H]+.

Aufarbeitung

  1. temperatureWhen cooled to r.t. the mixture
  2. concentrationwas concentrated
  3. custompurified on a silica gel column
  4. washeluted with 0-50% EtOAc in heptane

Quellen und Nachweise

ORD-Eintrag
ord-b3ce3bc6e2b240419f727109ba8d247a
Quelldatensatz
uspto-grants-2013_04
Patentnummer
US08415483B2

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