Diethyl Oxalate → HCID 86730066, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of N2-(4-chlorophenyl)pyridine-2,3-diamine (C9) (1.8 g, 8.2 mmol) and diethyl ethanedioate (18 g, 123 mmol) was stirred at 140° C. for 18 hours. Purification using silica gel chromatography (Gradient: 16% to 50% ethyl acetate in petroleum ether) provided the product as a brown solid, containing approximately 30% of a contaminant by 1H NMR analysis. Yield: 250 mg, 0.83 mmol, 10%. 1H NMR (400 MHz, CD3OD), product peaks only: δ 8.49 (dd, J=4.8, 1.5 Hz, 1H), 8.31 (dd, J=8.2, 1.4 Hz, 1H), 7.61 (br d, J=8.9 Hz, 2H), 7.52 (dd, J=8.2, 4.6 Hz, 1H), 7.49 (br d, J=8.9 Hz, 2H), 4.34 (q, J=7.2 Hz, 2H), 1.25 (t, J=7.2 Hz, 3H).

Provenance & Evidence