Triethylamine → HCID 14722547, compound

HRID 1073155Notes

Reaction equation

Br[CH2:2][CH2:3][CH2:4][CH:5]=[C:6]([C:14]1[CH:19]=[CH:18][C:17]([F:20])=[CH:16][CH:15]=1)[C:7]1[CH:12]=[CH:11][C:10]([F:13])=[CH:9][CH:8]=1.[CH3:21][C:22]1([CH3:32])[N:26]2[CH2:27][CH2:28][NH:29][CH2:30][CH:25]2[C:24](=[O:31])[NH:23]1.C(N(CC)CC)C>CN(C)C=O>[F:13][C:10]1[CH:11]=[CH:12][C:7]([C:6]([C:14]2[CH:19]=[CH:18][C:17]([F:20])=[CH:16][CH:15]=2)=[CH:5][CH2:4][CH2:3][CH2:2][N:29]2[CH2:28][CH2:27][N:26]3[C:22]([CH3:32])([CH3:21])[NH:23][C:24](=[O:31])[CH:25]3[CH2:30]2)=[CH:8][CH:9]=1

Participants

Conditions

Temperature: 70 °C

Procedure

A mixture of 51 parts of 1,1'-(5-bromo-1-penten-1-ylidene)bis[4-fluorobenzene], 25.4 parts of hexahydro-3,3-dimethylimidazo-[1,5-a]pyrazin-1(5H)-one, 35.5 parts of N,N-diethylethanamine and 270 parts of N,N-dimethylformamide was stirred overnight at 70° C. After evaporation, the residue was taken up in trichloromethane. The organic layer was washed with water, dried, filtered and evaporated. The residue was purified by column chromatography over silica gel using a mixture of trichloromethane and methanol (96:4 by volume) as eluent. The pure fractions were collected and the eluent was evaporated, yielding 60 parts (94.0%) of 7-[5,5-bis(4-fluorophenyl)-4-pentenyl]hexahydro-3,3-dimethylimidazo[1.5-a]pyrazin-1(5H)-one as a residue (int. 24).

Workup

customAfter evaporation
washThe organic layer was washed with water
customdried
filtrationfiltered
customevaporated
customThe residue was purified by column chromatography over silica gel using
additiona mixture of trichloromethane and methanol (96:4 by volume) as eluent
customThe pure fractions were collected
customthe eluent was evaporated

Sources & evidence

ORD record: ord-696f5e407b23486c9def7e7e2329c693
Source dataset: uspto-grants-1990_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US04968684

Reaction notes

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