How would you name the alkene shown above? Turns out the answer might not be what you think! IUPAC changed their naming preferences for alkenes back in 2013 and apparently very few people noticed (myself included). The thread of tweets linked above highlights what’s changed.
The discussion raises the question of whether, if a name unambiguously identifies a molecule, it matters if it’s the approved systematic name or not. Preferred IUPAC names for common compounds are a jumble of archaic and systematic names, anyway: acetic acid is the preferred IUPAC name for what would systematically be called ethanoic acid, but don’t let IUPAC catch you calling butanoic acid butyric acid.
It’s a question explored further by Kat Day in this Chemistry World article
, where she argues that systematic names are increasingly irrelevant in the age of the internet.