(2R,5R)-tert-Butyl 2,5-dimethylpiperazine-1-carboxylate is a chiral piperazine derivative protected with a tert-butoxycarbonyl (Boc) group. It is a white to off-white crystalline solid with a molecular formula of C11H22N2O2. The compound features two stereocenters, both in the (R) configuration, making it a valuable chiral building block. This compound is primarily used as a key chiral intermediate in pharmaceutical synthesis. Its most notable application is in the synthesis of complex drug molecules, particularly as a precursor for the preparation of chiral ligands and catalysts used in asymmetric synthesis. The Boc-protected, dimethyl-substituted piperazine scaffold is a privileged structure found in various bioactive molecules and drug candidates. The Boc group provides orthogonal protection for the secondary amine, allowing for selective deprotection and further functionalization under mild acidic conditions. This makes it a versatile and widely used intermediate in medicinal chemistry research and process development for the production of enantiomerically pure pharmaceuticals.