Overview
(+)-2,3-Pinanediol is a chiral organic compound derived from pinene, a terpene found in pine trees. It is characterized by its two hydroxyl groups attached to a bicyclic pinane structure, making it a valuable intermediate in fine chemical synthesis. The (+)-enantiomer is particularly sought after for its role in asymmetric synthesis due to its rigid structure and defined stereochemistry. This compound is primarily produced through the oxidation of α-pinene or derived from camphor. Its high optical purity and stability make it a preferred choice for applications requiring precise molecular configurations, such as in pharmaceuticals and advanced material science.
Physical and Chemical Properties
(+)-2,3-Pinanediol appears as a white crystalline solid with a melting point range of 120-125°C. It has a molecular weight of 170.25 g/mol and a density of approximately 1.05 g/cm³. The compound is soluble in common organic solvents like ethanol, methanol, and acetone but exhibits limited solubility in water. Its chiral nature and bicyclic structure contribute to its stability under normal conditions. The compound is resistant to racemization, making it suitable for reactions requiring enantiomeric purity. Its reactivity is typical of secondary diols, participating in esterification, etherification, and oxidation reactions.
Main Applications
(+)-2,3-Pinanediol serves as a key intermediate in the synthesis of pharmaceuticals, particularly in the production of chiral drugs where stereochemistry is critical. It is also used in the fragrance industry to create woody and pine-like scents due to its terpene origin. In material science, the compound acts as a chiral auxiliary or ligand in asymmetric catalysis, enhancing the efficiency of reactions like hydrogenation and epoxidation. Its derivatives are explored for liquid crystal and polymer applications, leveraging its rigid molecular framework.
Safety and Storage
While (+)-2,3-Pinanediol is not classified as highly hazardous, proper handling precautions are necessary. Direct skin contact or inhalation of dust should be avoided to prevent irritation. Personal protective equipment (PPE) such as gloves and safety goggles is recommended during handling. The compound should be stored in a tightly sealed container in a cool, dry environment, away from strong oxidizing agents. Prolonged exposure to moisture or high temperatures may affect its stability. Dispose of waste in compliance with local regulations for organic compounds.
B2B Procurement Guide
When procuring (+)-2,3-Pinanediol, prioritize suppliers who provide certificates of analysis (CoA) detailing purity, enantiomeric excess (ee), and impurity profiles. For pharmaceutical applications, ensure compliance with relevant pharmacopeia standards (e.g., USP, EP). Bulk pricing varies based on quantity and purity (typically 98-99.5%). Consider long-term contracts with reputable manufacturers to secure stable supply chains. For niche applications, custom synthesis options may be available to meet specific chiral purity requirements.