Triethylamine → Methyl 5-chloro-6-cyano-2-(3-fluorophenyl)nicotinate

HRID 717816Notes

Reaction equation

[Cl:1][C:2]1[CH:3]=[N+:4]([O-])[C:5]([C:12]2[CH:17]=[CH:16][CH:15]=[C:14]([F:18])[CH:13]=2)=[C:6]([CH:11]=1)[C:7]([O:9][CH3:10])=[O:8].[CH2:20]([N:22](CC)CC)C.C[Si](C#N)(C)C>C(#N)C>[Cl:1][C:2]1[C:3]([C:20]#[N:22])=[N:4][C:5]([C:12]2[CH:17]=[CH:16][CH:15]=[C:14]([F:18])[CH:13]=2)=[C:6]([CH:11]=1)[C:7]([O:9][CH3:10])=[O:8]

Participants

Conditions

Temperature: 70 °C

Procedure

Methyl 5-chloro-2-(3-fluorophenyl)nicotinate 1-oxide (2.9 g, 10 mmol) was stirred in acetonitrile (30 mL) with triethylamine (2.2 mL, 16 mmol) and trimethylsilyl cyanide (3.4 mL, 26 mmol) was added. The mixture was heated at 70° C. for 1 hour. Evaporation and purification by flash column chromatography using ethyl acetate in hexanes (0-20%) gave the desired compound (2.7 g, 90%). LCMS calculated for C14H9ClFN2O2 (M+H)+: m/z=291.1. found: 290.8.

Workup

additionwas added
customEvaporation and purification by flash column chromatography

Sources & evidence

ORD record: ord-4503de346bc442439c003d275e7187d6
Source dataset: uspto-grants-2015_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09193721B2

Reaction notes

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