Phosphorus pentachloride → 2-(3,3,3-Trinitropropyl)-5-(perfluoropropyl)-1,3,4-oxadiazole

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Reaction Steps

Phosphorus pentachloride (1.2 g, 0.0057 mole) and N-(4,4,4-trinitrobutyryl)-N'-(perfluorobutyryl)hydrazine (0.8 g, 0.0018 mole) in 10mL of dichloroethane was held at reflux temperature for 4 hours. Removal of volatiles 9ave an oil which was washed with water and then chromatographed on Silica gel 40 (CH2Cl2 as eluent) to give 0.5 g (66%) of 2-(3,3,3-trinitropropyl)-5-(perfluoropropyl)-1,3,4-oxadiazole, mp 43°-45° C.; 1H NMR (acetone): 3.84 (m, 2H), 4.23 (m, 2H). Anal. Calcd for C8H4F7N5O7 : C, 23.14; H, 0.97; F, 32.04; N, 16.87. Found: C, 23.07; H, 1.00; F, 31.80; N, 16.95.

Provenance & Evidence