Potassium Carbonate → HCID 86616698, compound

HRID 597926Notes

Reaction equation

[CH3:1][CH:2]1[CH2:8][N:7]([C:9](=[O:14])[C:10]([F:13])([F:12])[F:11])[CH2:6][CH2:5][C:4]2[N:15]=[C:16]([OH:19])[CH:17]=[CH:18][C:3]1=2.C([O-])([O-])=O.[K+].[K+].Cl[C:27](C(O[Na])=O)([F:29])[F:28].C([O-])(O)=O.[Na+]>CCOC(C)=O.CN(C=O)C>[F:28][CH:27]([F:29])[O:19][C:16]1[CH:17]=[CH:18][C:3]2[CH:2]([CH3:1])[CH2:8][N:7]([C:9](=[O:14])[C:10]([F:13])([F:11])[F:12])[CH2:6][CH2:5][C:4]=2[N:15]=1

Participants

Conditions

Temperature: 90 °C

Procedure

To a mixture of 5-methyl-7-(trifluoroacetyl)-6,7,8,9-tetrahydro-5H-pyrido[2,3-d]azepin-2-ol (77.0 mg, 281 μmol), K2CO3 (19.0 mg, 141 μmol) and DMF (1.4 ml) was added F2ClCCO2Na (47.0 mg, 310 μmol). The mixture was heated at 90° C. for 2 h. The reaction mixture was parted between sat. aq. NaHCO3 and EtOAc. The organic layer was dried, concentrated in vacuo and purified by means of column chromatography to give 49.0 mg (54%) of 2-(difluoromethoxy)-5-methyl-7-(trifluoroacetyl)-6,7,8,9-tetrahydro-5H-pyrido[2,3-d]azepine. MS (ESI) m/z 325.2. A mixture of 2-(difluoromethoxy)-5-methyl-7-(trifluoroacetyl)-6,7,8,9-tetrahydro-5H-pyrido[2,3-d]azepine (28.0 mg, 86.0 μmol), K2CO3 (30 mg), MeOH (1 ml) and H2O (200 μl) was heated to reflux for 10 min. The reaction mixture was concentrated in vacuo and the resulting residue was purified by column chromatography to yield 7.0 mg (36%) of 2-(difluoromethoxy)-5-methyl-6,7,8,9-tetrahydro-5H-pyrido[2,3-d]azepine. 1H-NMR (CDCl3) δ 7.46 (d, 1H), 6.66 (d, 1H), 3.09 (m, 2H), 3.40-2.90 (m, 4H), 2.74, (dd, 1H), 1.31 (d, 3H) ppm.

Workup

customThe organic layer was dried
concentrationconcentrated in vacuo
custompurified by means of column chromatography

Sources & evidence

ORD record: ord-700c18d62c074b448f34ea12acee2507
Source dataset: uspto-grants-2011_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07897595B2

Reaction notes

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