An alkynyl substrate that is used with α-diazoesters in a copper-catalyzed synthesis of pyrazoles.酮催化合成吡唑中和α-重氮甲酸酯(diazoesters)一起用作炔基底物。 An alkynyl substrate that is used with α-diazoesters in a copper-catalyzed synthesis of pyrazoles. 5-Chloro-1-pentyne was used in the synthesis of 5-chloro-2-trimethylstannyl-1-pentene by reacting with Me3SnCu.Me2S.It was also used with α-diazoesters in a copper-catalyzed synthesis of pyrazoles.