2,4,5-Trichloronitrobenzene → HCID 67654434, compound

Participants

Reaction Steps

(±)-(1R*, 2S*, 3R*)-3-Amino-1,2-cyclopentanediol (7.10 g, 50.0 mmol), 1,2,4-trichloro-5-nitrobenzene (11.67 g, 50.0 mmol as 97%, Aldrich), triethylamine (10 mL) and t-butanol (50 mL) were refluxed under nitrogen for 7 hours. Volatiles were removed in vacuo and the black residue chromatographed on silica gel. Title compound was eluted with methanol:chloroform/1:24 as an orange solid (6.45 g, 42%). Crystallization of such a sample from ethanol-water gave title compound as yellow needles, m.p. 137°-140° C.; 1H-NMR (DMSO-d6)δ: 8.26 and 7.49 (both s, 1 each, 2 aromatic CH), 8.06 (d, J=7.0 Hz, 1, NH), 5.04 (d, J=6.1 Hz, 1, OH), 4.65 (d, J=4.1 Hz, 1, OH), 4.0-3.7 (m, 3, 2 OCH and NCH), 2.2-2.21, 2.0-1.8, 1.7 -1.3 (all m, 4, 4 CH).

Provenance & Evidence