The reaction of 3-p-nitrophenoxy-3-chlorodiazirine with a 1.1: 1.0: 1.6 blend of tetrabutylammonium chloride, cesium chloride, and the ionic liquid 1-butyl-3- methylimidazolium chloride at 40-50° C under vacuum at 1 mm⊙ Hg produced a melt from which dichlorodiazirine distilled into a cold trap containing pentane at-70° C over 6-7 h. Dichlorodiazirine, the first nitrogenous precursor for dichlorocarbene, was reasonably ...