[affa]

I hope to know if the diimide reduction of alkynes could stop at Z-olefin stage selectively without having over-reduction to alkanes. If it does, what is the relative reactivity between di-substituted alkynes and Z-olefins under diimide reduction conditions? (I can seldom find literature examples about the chemoselective reduction of alkynes to alkens using the said method)

Thank guys!

[Kryolith]

As far as I know, diimide is used to hydrogenate alkenes. I don't know, if there's a way to stop formation of alkanes. This paper might be interesting to you:

http://newjournal.kcsnet.or.kr/main/j_search/j_view.htm?code=B041009&cpage=1&journal=A&vol=25&no=&page=1463&fields=&keyword1=&year1=&year2=2008&research=&aorder1=&aorder2=&fields2=none&keyword2=&fields3=&keyword3=&fields4=&keyword4=&research=&view=10&boolean1=AND&boolean2=&qpage=j_search&asearch1=