Ac-Val-OH is an N-protected valine amino acid ligand. It participates in the 2,6-diolefination reaction of phenylacetic acids.Ac-Val-OH may be employed as a ligand for the meta-selective tert-alkylation reaction. Ac-Val-OH is an N-protected valine amino acid ligand. It participates in the 2,6-diolefination reaction of phenylacetic acids. Ac-Val-OH may be employed as a ligand for the meta-selective tert-alkylation reaction.