ˈbaɪɐ is the pronunciation of Baeyer's name. The "ae" in Baeyer is pronounced as a long "i" sound, similar to the "i" in "high." The "y" is pronounced as a short "i" sound, like the "i" in "sit." The stress is on the first syllable, so the name is pronounced "BYE-er."
Adolf von Baeyer Trivia: 31 Questions to test your Fan-dom