Here's what rhymes with diazomethane.

Consider these alternatives

benzaldehyde / side cyclohexanone / known ethylenediamine / nine unsubstituted / included phosphonate / late resorcinol / small pentachloride / chloride benzoic / heroic acetophenone / benzophenone trifluoroacetic / magnetic benzophenone / acetophenone trimethylsilyl / while deprotonation / education ferrocene / seen triethylamine / mean