Hydrochloric Acid → HCID 178525913, Verbindung

HRID 1042221

Reaktionsgleichung

Reaktionsgleichung von HRID 1042221
[CH:1]1([N:7]2[C:12]([OH:13])=[C:11]([C:14]([NH:16][CH2:17][C:18]([O:20]CC)=[O:19])=[O:15])[C:10](=[O:23])[NH:9][C:8]2=[O:24])[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.C(=O)([O-])[O-].[K+].[K+].[CH:31]1([CH2:37][CH2:38]Br)[CH2:36][CH2:35][CH2:34][CH2:33][CH2:32]1.Cl>CC(N(C)C)=O>[CH:1]1([N:7]2[C:12]([OH:13])=[C:11]([C:14]([NH:16][CH2:17][C:18]([OH:20])=[O:19])=[O:15])[C:10](=[O:23])[N:9]([CH2:38][CH2:37][CH:31]3[CH2:36][CH2:35][CH2:34][CH2:33][CH2:32]3)[C:8]2=[O:24])[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6]1

Komponenten

6

Edukt 4

HCID 313Hydrochloric AcidHCID 11430Potassium CarbonateHCID 15440(2-Bromoethyl)cyclohexaneHCID 68636133ethyl N-[(1-cyclohexyl-6-hydroxy-2,4-dioxo-1,2,3,4-tetrahydro-5-pyrimidinyl)carbonyl]glycinate

Produkt 1

HCID 178525913HCID 178525913, VerbindungAusbeute 42,7 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 31374DimethylacetamideLösungsmittel

Versuchsvorschrift

A mixture of ethyl N-[(1-cyclohexyl-6-hydroxy-2,4-dioxo-1,2,3,4-tetrahydro-5-pyrimidinyl)carbonyl]glycinate (340 mg, 1.0 mmoles), pulv. potassium carbonate (1.0 g, 7.24 mmoles) and 2-cyclohexylethyl bromide (287 mg, 1.5 mmoles) in dimethylacetamide (8 mL) was vigorously stirred at 100° C. for 3 hours. The mixture was poured into 1 molar hydrochloric acid and extracted with ethyl acetate. The organic solution was washed with 1 molar hydrochloric acid and evaporated. The residue was purified by flash chromatography (10-50% ethyl acetate in hexane), the required fractions evaporated, dissolved in ethanol (5 mL) and 1 molar sodium hydroxide solution (1.0 mL) and 6 molar sodium hydroxide solution (1.0 mL) added. The mixture was stirred overnight, acidified and extracted with ethyl acetate (×2), the combined extracts washed with 1 molar hydrochloric acid, dried and evaporated. Recrystallization from toluene gave the title compound (180 mg, 42%). 1H NMR (400 MHz, DMSO-d6) δ ppm 10.15 (br. s., J=5.43, 5.43 Hz, 1 H), 4.63 (t, J=11.62 Hz, 1 H), 4.07-4.19 (m, 2 H), 3.72-3.88 (m, 2 H), 2.18-2.36 (m, 2 H), 1.50-1.87 (m, 10 H), 1.35-1.47 (m, 2 H), 1.04-1.35 (m, 7 H), 0.91 (q, J=11.62 Hz, 2 H).

Aufarbeitung

  1. extractionextracted with ethyl acetate
  2. washThe organic solution was washed with 1 molar hydrochloric acid
  3. customevaporated
  4. customThe residue was purified by flash chromatography (10-50% ethyl acetate in hexane)
  5. customthe required fractions evaporated
  6. dissolutiondissolved in ethanol (5 mL)
  7. addition1 molar sodium hydroxide solution (1.0 mL) and 6 molar sodium hydroxide solution (1.0 mL) added
  8. extractionextracted with ethyl acetate (×2)
  9. washthe combined extracts washed with 1 molar hydrochloric acid
  10. customdried
  11. customevaporated
  12. customRecrystallization from toluene

Quellen und Nachweise

ORD-Eintrag
ord-c42a79faf9394c9eba486584db1325e1
Quelldatensatz
uspto-grants-2013_10
Patentnummer
US08557834B2

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