3',6'-Diacetoxy-3-oxo-3H-spiro[2-benzofuran-1,9'-xanthene]-6-carboxylic acid(CAS: 3348-03-6)

3',6'-Diacetoxy-3-oxo-3H-spiro[2-benzofuran-1,9'-xanthene]-6-carboxylic acid has a crystalline form with a molecular weight of approximately 412.41 g/mol. It is slightly soluble in water and more soluble in organic solvents like ethanol and acetone. The compound is known for its chemical stability but can react with bases to form salts. It exhibits a strong UV absorption peak in the 350-400 nm range.

3',6'-Diacetoxy-3-oxo-3H-spiro[2-benzofuran-1,9'-xanthene]-6-carboxylic acid is typically synthesized via a multi-step process involving acetoxylation of 2-benzofuran and subsequent spirocyclization with xanthene derivatives. The reaction is usually carried out under anhydrous conditions with a Lewis acid catalyst like aluminum chloride to achieve high selectivity and yield.

3',6'-Diacetoxy-3-oxo-3H-spiro[2-benzofuran-1,9'-xanthene]-6-carboxylic acid is used in the pharmaceutical industry for the synthesis of certain drug intermediates due to its unique chemical structure. It is also applied in the polymer industry for enhancing the properties of certain polymers and in the electronics industry for the development of organic semiconductors and sensors.

When handling 3',6'-Diacetoxy-3-oxo-3H-spiro[2-benzofuran-1,9'-xanthene]-6-carboxylic acid, it is important to wear appropriate personal protective equipment (PPE) including gloves, goggles, and a lab coat. Ensure that work is performed in a well-ventilated area or a fume hood to avoid inhalation of vapors. In the case of a spill, immediately clean up with appropriate absorbent material and dispose of it according to local regulations. Refer to the Safety Data Sheet (SDS) for further information on safe handling and storage.