| Abstract
| - 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 stable in the dark at 25 °C and efficiently generated the carbene upon photolysis.
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