Hydrochloric Acid → HCID 178525909, compound

HRID 2410068Notes

Reaction equation

HRID 2410068 reaction equation
[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+].[Br:31][C:32]1[CH:39]=[CH:38][C:37]([F:40])=[CH:36][C:33]=1[CH2:34]Br.Cl>CC(N(C)C)=O>[Br:31][C:32]1[CH:39]=[CH:38][C:37]([F:40])=[CH:36][C:33]=1[CH2:34][N:9]1[C:10](=[O:23])[C:11]([C:14]([NH:16][CH2:17][C:18]([OH:20])=[O:19])=[O:15])=[C:12]([OH:13])[N:7]([CH:1]2[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6]2)[C:8]1=[O:24]

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 11430Potassium CarbonateHCID 5179721-Bromo-2-(bromomethyl)-4-fluorobenzeneHCID 68636133ethyl N-[(1-cyclohexyl-6-hydroxy-2,4-dioxo-1,2,3,4-tetrahydro-5-pyrimidinyl)carbonyl]glycinate

Product 1

HCID 178525909HCID 178525909, compoundYield 32.1%

Reagents, catalysts & solvents 1

HCID 31374DimethylacetamideSolvent

Procedure

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 (750 mg, 5.35 mmoles) and 2-bromo-5-fluorobenzyl bromide (375 uL, 2.0 mmoles) in dimethylacetamide (6 mL) was vigorously stirred at 100° C. for 3 hours. The mixture was poured into 1 molar hydrochloric acid and extracted with ethyl acetate (×2). The combined organic solutions were 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 (3.0 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 acetic acid-water gave the title compound (160 mg, 31%). 1H NMR (400 MHz, DMSO-d6) δ ppm 13.10 (br. s., 1 H), 10.10 (br. s., 1 H), 7.69 (dd, J=8.59, 5.31 Hz, 1 H), 7.11 (ddd, J=8.53, 3.16 Hz, 1 H), 7.05 (dd, J=9.60, 2.78 Hz, 1 H), 4.95 (s, 2H), 4.63 (t, J=12.38 Hz, 1 H), 4.13 (d, J=5.81 Hz, 2 H), 2.24 (q, 2 H), 1.79 (d, J=13.14 Hz, 2 H), 1.52-1.74 (m, J=27.54, 11.62 Hz, 3 H), 1.28 (q, J=12.88 Hz, 2 H), 1.10 (q, J=12.97 Hz, 1 H).

Workup

  1. extractionextracted with ethyl acetate (×2)
  2. washThe combined organic solutions were 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 (3.0 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 acetic acid-water

Sources & evidence

ORD record
ord-a63e10c5ba044022b685cfbcb55dbcc4
Source dataset
uspto-grants-2014_08
Patent number
US08815884B2

Reaction notes

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