N,N-Diethylaniline → propyl 3-{6-[(2'-cyanobiphenyl-4-yl)methyl]-5-oxo-7-propyl[1,2,4]triazolo[1,5-a]pyrimidin-4(5H)-yl}cyclobutanecarboxylate

HRID 2062575Notes

Reaction equation

[C:1]([C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=1[C:9]1[CH:14]=[CH:13][C:12]([CH2:15][CH:16]([C:22](=O)[CH2:23][CH2:24][CH3:25])[C:17](OCC)=[O:18])=[CH:11][CH:10]=1)#[N:2].[N:27]1[N:28]=[C:29]([NH:32][CH:33]2[CH2:36][CH:35]([C:37]([O:39][CH2:40][CH2:41][CH3:42])=[O:38])[CH2:34]2)[NH:30][CH:31]=1.N12CCCN=C1CCCCC2.C(N(CC)C1C=CC=CC=1)C>C(OCC)(=O)C>[C:1]([C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=1[C:9]1[CH:10]=[CH:11][C:12]([CH2:15][C:16]2[C:17](=[O:18])[N:32]([CH:33]3[CH2:34][CH:35]([C:37]([O:39][CH2:40][CH2:41][CH3:42])=[O:38])[CH2:36]3)[C:29]3[N:28]([N:27]=[CH:31][N:30]=3)[C:22]=2[CH2:23][CH2:24][CH3:25])=[CH:13][CH:14]=1)#[N:2]

Participants

Conditions

Temperature: 180 °C

Procedure

A mixture of ethyl 2-[(2′-cyanobiphenyl-4-yl)methyl]-3-oxohexanoate (12 g), propyl 3-(4H-1,2,4-triazol-3-ylamino)cyclobutanecarboxylate (4 g), 1,8-diazabicyclo[5.4.0]undec-7-ene (1.2 mL) and N,N-diethylaniline (50 mL) was stirred at 180° C. for 16 hr. The obtained reaction mixture was diluted with ethyl acetate, washed 3 times with 1 N hydrochloric acid and saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography to give the title compound as a mixture of geometric isomers (5 g, 55%).

Workup

customThe obtained reaction mixture
washwashed 3 times with 1 N hydrochloric acid and saturated brine
dry with materialdried over anhydrous magnesium sulfate
customThe solvent was evaporated under reduced pressure
customthe residue was purified by silica gel column chromatography

Sources & evidence

ORD record: ord-9afe467bfe5640ec88a0d97765bf5d95
Source dataset: uspto-grants-2012_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08283353B2

Reaction notes

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