Diisopropylethylamine → 1-({5-[3-Chloro-2-fluoro-5-(trifluoromethyl)phenyl]-1,2,4-oxadiazol-3-yl}methyl)-2-propyl-4-(trifluoromethyl)-1H-indole-5-carbonitrile

HRID 1188591Notes

Reaction equation

[C:1]([C:3]1[C:4]([C:20]([F:23])([F:22])[F:21])=[C:5]2[C:9](=[CH:10][CH:11]=1)[N:8]([CH2:12][C:13](=[NH:16])[NH:14][OH:15])[C:7]([CH2:17][CH2:18][CH3:19])=[CH:6]2)#[N:2].[Cl:24][C:25]1[C:26]([F:38])=[C:27]([CH:31]=[C:32]([C:34]([F:37])([F:36])[F:35])[CH:33]=1)[C:28](Cl)=O.C(N(CC)C(C)C)(C)C>C(#N)C>[Cl:24][C:25]1[C:26]([F:38])=[C:27]([C:28]2[O:15][N:14]=[C:13]([CH2:12][N:8]3[C:9]4[C:5](=[C:4]([C:20]([F:22])([F:23])[F:21])[C:3]([C:1]#[N:2])=[CH:11][CH:10]=4)[CH:6]=[C:7]3[CH2:17][CH2:18][CH3:19])[N:16]=2)[CH:31]=[C:32]([C:34]([F:36])([F:37])[F:35])[CH:33]=1

Participants

Conditions

Temperature: 150 °C

Procedure

To a solution of 2-[5-cyano-2-propyl-4-(trifluoromethyl)-1H-indol-1-yl]-N-hydroxyethanimidamide (Example 275A) (0.100 g, 0.308 mmol) in anhydrous acetonitrile (3.0 mL) under N2, was added 3-chloro-2-fluoro-5-(trifluoromethyl)benzoyl chloride (0.321 g, 1.23 mmol) and N,N-diisopropylethylamine (0.50 mL, 5.21 mmol). The mixture was then heated in a microwave at 150° C. for 30 min. Upon cooling, the mixture was poured onto a biotage prepak column and the mixture was purified by flash chromatography (0-25% EtOAc-hexanes gradient) to give 0.066 g (40% yield) of pure product: MS (ES) m/z 530 (M+).

Workup

temperatureUpon cooling
additionthe mixture was poured onto a biotage prepak column
customthe mixture was purified by flash chromatography (0-25% EtOAc-hexanes gradient)

Sources & evidence

ORD record: ord-37a3530d03074ce993ff9ed15a9d359e
Source dataset: uspto-grants-2014_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08673948B2

Reaction notes

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