Pyridine → 1-(3-chlorophenyl)-1H-1,2,4-triazole-3-carboxylic acid methyl ester

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Reaction Steps

To a mixture of 12.1 g (77.1 mmol) 3-chlorophenylboronic acid and 10.0 g (77.1 mmol) methyl 1,2,4-triazole-3-carboxylate in 200 mL DCM was added 19.0 mL (235 mmol) pyridine followed by 14.0 g (77.1 mmol) copper (II) acetate. The reaction mixture was stirred at RT for 3 days, and then filtered over celite. The filtrate was washed with 1M aqueous KHSO4 solution and saturated aqueous bicarbonate solution. The organic layer was dried over sodium sulfate, concentrated in vacuo and dried.

Provenance & Evidence