diazopropane

Noun

 * 1)  Either of two isomeric diazo compounds, CH3-CH2-CH=N+=N- and (CH3)2-C=N+=N-
 * Aldrichimica Acta Volume 30 No 4 (pdf) from Sigma-Aldrich
 * Diazomethane reacts rapidly with Smith’s diene to produce pyrazoline (R = H) by exclusive reaction at the cyclobutene π-bond); diazoethane and 2-diazopropane produce analogous products