Novel aminobutyric acids derivatives and methods for protecting crops against fungal diseases by applying to the crops or their locus a composition containing an effective amount of said derivatives.
of readily available aminoacids, which is not only an oxygen nucleophile but also a nitrogen nucleophile, in palladium-catalyzed allylic substitution is realized under mild conditions. The chemoselectivity and multiple allylation are controlled by adjusting the reaction conditions. This represents the first example of this convenient access to valuable N,O-diallylated aminoacids. Under the title conditions