For the DJ Paul Walden, see Guru Josh.Paul Walden (Latvian: Pauls Valdens; 1863–1957) was a Russian and Latvian-German chemist known for his work in stereochemistry and history of chemistry. In particular he invented the stereochemical reaction known as Walden inversion and synthesized the first room-temperature ionic liquid, ethylammonium nitrate.
He was nominated for a 2004 Laurence Olivier Theatre Award for Best Entertainment of 2003 for The Rat Pack -- Live from Las Vegas performed at the Haymarket and Strand theatres.
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