Ammonium Hydroxide → HCID 58075545, compound

HRID 2370156Notes

Reaction equation

[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]2[C:16]3[O:15][C:14](=O)[NH:13][C:12](=[O:18])[C:11]=3[CH2:10][CH2:9]2)=[CH:4][CH:3]=1.[OH-].[NH4+:20]>>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]2[C:16]3[NH:20][C:14](=[O:15])[NH:13][C:12](=[O:18])[C:11]=3[CH2:10][CH2:9]2)=[CH:4][CH:3]=1

Participants

Reactant 2

HCID 14923Ammonium Hydroxide

HCID 58075794HCID 58075794, compound

Product 1

HCID 58075545HCID 58075545, compoundYield 91.1%

Procedure

A solution of 7-(4-chlorophenyl)-6,7-dihydrocyclopenta[e][1,3]oxazine-2,4(3H,5H)-dione (5.4 g, 20.48 mmol) in concentrated ammonium hydroxide (59.8 mL, 1536 mmol) was stirred at 100° C. in a high-pressure vessel for 6 h. The formation of white precipitate was observed during the heating. The solvent was removed in vacuum to provide 7-(4-chlorophenyl)-6,7-dihydro-1H-cyclopenta[d]pyrimidine-2,4(3H,5H)-dione (4.9 g, 18.65 mmol, 91% yield) as a off-white solid. LC-MS (M+H)+=263.2. 1H NMR (500 MHz, DMSO-d6) δ ppm 7.37 (2H, d, J=8.2 Hz), 7.19 (1H, d, J=8.5 Hz), 4.16 (1H, d, J=5.2 Hz), 3.79 (1H, br s), 3.17 (1H, s), 2.51 (2H, d, J=1.8 Hz), 1.75-1.85 (1H, m).

Workup

customThe solvent was removed in vacuum

Sources & evidence

ORD record: ord-4702276825bc485dbf07bec0989ca721
Source dataset: uspto-grants-2014_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08710061B2

Reaction notes

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