UTFSE for
"hydrogenation nitro????ene (" Pt" OR Platinum)"* hydrogenation also catches "catalytic hydrogenation" and "catalytic transfer hydrogenation" (but not CTH, but that only gave two more hits, so I didn't want to complicate it more than necessary).
* nitro????ene catches both "nitrostyrene" and "nitropropene", but leaves out a lot of trash gotten by searching for "nitro*ene". It won't catch "nitro olefin" or "nitroethene" though.
* (" Pt" OR Platinum)" catches all occurrences of
either Pt or Platinum. The reason I included a space before the Pt in
" Pt" is to avoid catching words like "excer
pt" or "exce
pt" while still finding stuff like "Pt/C".
Here you go - 36 hits. Also check my page, but the search engine there is not as advanced as TFSE so be kind to it