Cyclohexanecarbonyl chloride → 5-cyclohexyl-2,3-bis(4-fluorophenyl)-7,7-bis(trifluoromethyl)-7H-imidazo[1,5-A]-imidazole

HRID 22301Notes

Reaction equation

[F:1][C:2]([F:30])([F:29])[C:3]([C:25]([F:28])([F:27])[F:26])([C:5]1[N:6]([CH3:24])[C:7]([C:17]2[CH:22]=[CH:21][C:20]([F:23])=[CH:19][CH:18]=2)=[C:8]([C:10]2[CH:15]=[CH:14][C:13]([F:16])=[CH:12][CH:11]=2)[N:9]=1)[NH2:4].[CH:31]1(C(Cl)=O)[CH2:36][CH2:35][CH2:34][CH2:33][CH2:32]1>N1C=CC=CC=1>[CH:31]1([C:24]2[N:6]3[C:7]([C:17]4[CH:22]=[CH:21][C:20]([F:23])=[CH:19][CH:18]=4)=[C:8]([C:10]4[CH:15]=[CH:14][C:13]([F:16])=[CH:12][CH:11]=4)[N:9]=[C:5]3[C:3]([C:2]([F:29])([F:1])[F:30])([C:25]([F:26])([F:27])[F:28])[N:4]=2)[CH2:36][CH2:35][CH2:34][CH2:33][CH2:32]1

Participants

Conditions

Temperature: 130 °C

Procedure

To a solution of α,α-bis(trifluoromethyl)-4,5-bis(4-fluorophenyl)-1-methyl-1H-imidazole-2-methanamine (3.38 gr, 7.8 mmole) in pyridine (1.7 gr) was added cyclohexane carbonyl chloride (3.5 gr, 23.9 mmole). The reaction mixture was heated at 130° C. for 4 hours. The mixture was purified by column chromatography, eluting with hexane, then mixture of hexane-ethylacetate (9:1) to give 5-cyclohexyl-2,3-bis(4-fluorophenyl)-7,7-bis(trifluoromethyl)-7H-imidazo[1,5-A]-imidazole (1.88 gr, 37%) as a white solid: mp 162.2-162.6. Anal. Calcd for C25H19F8N3 :C,58.60;H,3.54;N,8.20. Found: C,58.43;H,3.79;N,8.16.

Workup

customThe mixture was purified by column chromatography
washeluting with hexane
additionmixture of hexane-ethylacetate (9:1)

Sources & evidence

ORD record: ord-d3c5938f55f24fb992416f23b85f2d82
Source dataset: uspto-grants-1995_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05428041

Reaction notes

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