What is the connection between pivaldehyde and crotonaldehyde?

Pivaldehyde and Crotonaldehyde are both important aliphatic aldehyde intermediates used in the preparation of certain pesticides and herbicides. Pivaldehyde is a highly branched, saturated aldehyde, an α-branched aldehyde with significant steric hindrance; while Crotonaldehyde is an unsaturated, straight-chain aldehyde with a conjugated system, readily undergoing addition reactions. In industrial synthesis, Pivaldehyde provides a stable tert-butyl steric structure, while Crotonaldehyde provides conjugated double bond active sites.

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