Methyl 5-chloro-4-nitrothiophene-2-carboxylate → Methyl 5-((3,5-difluoropyridin-4-yl)thio)-4-nitrothiophene-2-carboxylate

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Reaction Steps

Prepared according to the procedure described for example 18, sodium 3,5-difluoropyridine-4-thiolate (529 mg, 3.6 mmol) reacted with methyl 5-chloro-4-nitro-thiophene-2-carboxylate (800 mg, 3.6 mmol) to afford the titled product (800 mg, 67% yield). 1H NMR (400 MHz, d6-DMSO) δ: 8.91 (2H, s), 8.18 (1H, s), 3.85 (3H, s). MS m/z: 333.04 [M+H]+.

Provenance & Evidence