2-Ethoxy-3,3-dimethyl-2,3-dihydro-1-benzofuran-5-yl methanesulfonate(CAS: 26225-79-6)

2-Ethoxy-3,3-dimethyl-2,3-dihydro-1-benzofuran-5-yl methanesulfonate is a colorless crystalline solid with a molecular weight of approximately 345.4 g/mol. It has a low solubility in water but is soluble in common organic solvents. This compound is less reactive but can undergo typical organic transformations under mild conditions. It is stable under normal storage conditions but should be protected from moisture and heat.

2-Ethoxy-3,3-dimethyl-2,3-dihydro-1-benzofuran-5-yl methanesulfonate is usually synthesized through the methylation of 2-ethoxy-3,3-dimethyl-2,3-dihydro-1-benzofuran-5-carboxylic acid with methanesulfonyl chloride in the presence of a suitable base. The reaction is typically carried out at room temperature with high selectivity and yields over 90%. The use of a phase transfer catalyst can further enhance the efficiency of the synthesis.

2-Ethoxy-3,3-dimethyl-2,3-dihydro-1-benzofuran-5-yl methanesulfonate is primarily used in the pharmaceutical industry as a precursor in the synthesis of various drug molecules. It also finds applications in the polymer industry for the modification of polymer properties, in the production of sensors due to its potential as a chromogenic reagent, and in semiconductor manufacturing as a chemical intermediate.

When handling 2-Ethoxy-3,3-dimethyl-2,3-dihydro-1-benzofuran-5-yl methanesulfonate, it is essential to wear appropriate personal protective equipment (PPE), including gloves, goggles, and a lab coat. The compound should be used in a well-ventilated area or in a fume hood to minimize inhalation risks. Spills should be carefully cleaned up using absorbent materials, and the area should be well-ventilated. A safety data sheet (SDS) should be consulted for detailed emergency procedures and storage recommendations.