[(5-Methyl-1,3,4-oxadiazol-2-yl)methyl]amine

This compound is typically isolated as a crystalline solid ranging from white to pale yellow. Its molecular formula is C4H7N3O, corresponding to a molecular weight of 113.12. The melting point generally falls within the range of 78–82 °C. The calculated density is approximately 1.28 g/cm³ under ambient conditions. It exhibits good solubility in polar organic solvents including methanol, ethanol, and dimethyl sulfoxide, moderate solubility in water due to the polar amine and oxadiazole ring, and limited solubility in nonpolar solvents such as dichloromethane and hexane. The molecule consists of a 1,3,4-oxadiazole ring with a methyl group at the 5position and a primary amine attached via a methylene linker at the 2position. The amine is susceptible to acylation, alkylation, and condensation reactions, while the oxadiazole ring provides hydrogen bond accepting capability. Storage in tightly sealed containers under inert atmosphere at reduced temperature is recommended to prevent decomposition and absorption of carbon dioxide. Contact with strong oxidizing agents, acid chlorides, and isocyanates should be avoided.

(5Methyl1,3,4oxadiazol2yl)methanamine is a bifunctional heterocyclic compound combining an oxadiazole ring with a primary amine. The 1,3,4oxadiazole core is a fivemembered aromatic heterocycle containing two nitrogen atoms and one oxygen atom, providing both hydrogen bond accepting capability and metabolic stability. This heterocyclic scaffold is widely recognized in medicinal chemistry as a bioisostere for ester and amide functionalities, often improving pharmacokinetic properties while maintaining biological activity. The methyl group at the 5position introduces hydrophobic character and steric influence, modulating the overall lipophilicity. The aminomethyl group at the 2position offers a nucleophilic handle for further functionalization through amide bond formation, reductive amination, or alkylation reactions. This combination of a privileged heteroaromatic core with a reactive amine makes the compound a valuable building block in drug discovery and organic synthesis for constructing more complex molecules with potential antimicrobial, antiinflammatory, and anticancer activities.

Pharmaceutical Intermediate
In drug discovery, this oxadiazole amine is employed as a building block for synthesizing compounds with potential activity against microbial infections and cancer. The primary amine enables convenient amide coupling with carboxylic acidcontaining pharmacophores, allowing rapid generation of libraries for structureactivity relationship studies. The oxadiazole ring can serve as a bioisostere for ester or amide linkages, often improving metabolic stability and membrane permeability while retaining hydrogenbonding interactions with biological targets.

Building Block for Heterocyclic Systems
The compound serves as a precursor for constructing fused heterocyclic systems such as oxadiazolo[3,4a]pyrimidines and triazolo[3,4b]oxadiazoles through cyclization reactions involving the amine group. These ring systems are investigated for their pharmacological properties, with the oxadiazole core providing conformational constraint and hydrogenbonding capacity beneficial for target recognition. The methyl group can be further functionalized through radical or metalcatalyzed C–H activation to introduce additional diversity.

Ligand for Metal Complexes
The oxadiazole nitrogen atoms can coordinate to transition metals, forming complexes with welldefined geometries. The amine group provides an additional donor site, enabling the design of polydentate ligand systems. Metal complexes derived from this scaffold are studied for their catalytic activity in oxidation and crosscoupling reactions, as well as for their potential as luminescent materials and models for metalloenzyme active sites.

Organic Synthesis Building Block
As a versatile synthetic intermediate, (5methyl1,3,4oxadiazol2yl)methanamine participates in diverse transformations including Nacylation, Nalkylation, and reductive amination. The amine can be converted to carbamates, ureas, or thioureas for further elaboration. The oxadiazole ring can undergo electrophilic substitution at positions activated by the ring heteroatoms. Its utility extends to the synthesis of natural product analogs and functional materials where the combination of a heteroaromatic core and an amine functional group impairs desirable properties such as metal coordination and hydrogenbonding capacity.