You know what it looks like… but what is it called?
TAKE THE QUIZ“Reppe”
We have one entry that includes the term Reppe.
Reppe chemistry
noun: a branch especially of industrial chemistry that is based on reactions of acetylene under pressure and also of the products so obtained and that includes vinylation, ethynylation, polymerization to cyclic compounds, and carbonylation
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Merriam-Webster unabridged