Acetylene Synthesis by Adding H2O to CaC2 (calcium carbide)
A representative reaction is given below:
Higher alkynes can be synthesized from acetylene by reacting with NaNH2 followed by treatment with the appropriate alkyl halide. Terminal alkynes can be deprotonated using strong bases such as sodium amide. Hydroxides or alkoxides are not strong enough to deprotonate an acetylenic hydrogen.