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Unformatted text preview: features of this nucleophilic substitution reaction that were known at that time. The Walden Inversion This backside attack by the nucleophile results in an inversion of absolute configuration at the carbon center that is called a Walden inversion after Paul Walden (1863-1957) who accidently discovered the first such inversion of configuration at carbon in 1896. C L Nu:-+ Nu C + L:-* * The Walden inversion is a key characteristic of the S N 2 mechanism....
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