Guanidine Hydrochloride → HCID 178508867, compound

HRID 2386993Notes

Reaction equation

HRID 2386993 reaction equation
O=[C:2]1[CH:11]([C:12]([O:14]C)=O)[CH2:10][CH2:9][CH2:8][C:3]21[CH2:7][CH2:6][CH2:5][CH2:4]2.Cl.[NH2:17][C:18]([NH2:20])=[NH:19].C(=O)([O-])[O-].[K+].[K+]>CN(C)C=O>[NH2:20][C:18]1[N:19]=[C:12]([OH:14])[C:11]2[CH2:10][CH2:9][CH2:8][C:3]3([CH2:7][CH2:6][CH2:5][CH2:4]3)[C:2]=2[N:17]=1

Participants

5

Reactant 3

HCID 5742Guanidine HydrochlorideHCID 11430Potassium CarbonateHCID 57429459Methyl 6-oxospiro[4.5]decane-7-carboxylate

Product 1

HCID 178508867HCID 178508867, compound

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A solution of Example 10B (4.5 g, 21.4 mmol), guanidine hydrochloride (6.13 g, 64.2 mmol), and potassium carbonate (9.46 g, 68.5 mmol) in N,N-dimethylformamide (30 mL) was heated at 105-110° C. for 3 hours. The mixture was then filtered through a layer of diatomaceous earth, and the filter pad was washed with a small amount of N,N-dimethylformamide. Approximately two volumes of water were then added, and the pH of the resulting mixture was adjusted to pH 6-7 with acetic acid. The precipitate was collected, washed with water, and dried under vacuum to provide the title product. 1H NMR (300 MHz, DMSO-d6) δ 10.50-10.61 (m, 1H), 5.98-6.08 (m, 2H), 2.20 (t, 2H), 1.95-2.04 (m, 2H), 1.68-1.76 (m, 2H), 1.61-1.68 (m, 2H), 1.48-1.58 (m, 4H), 1.34-1.45 (m, 2H); MS (DCI+) m/z 220 (M+H)+.

Workup

  1. filtrationThe mixture was then filtered through a layer of diatomaceous earth
  2. washthe filter pad was washed with a small amount of N,N-dimethylformamide
  3. additionApproximately two volumes of water were then added
  4. customThe precipitate was collected
  5. washwashed with water
  6. customdried under vacuum

Sources & evidence

ORD record
ord-b5fdadd366ba4658ac4b0bccaead1240
Source dataset
uspto-grants-2012_09
Patent number
US08268846B2

Reaction notes

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