(Diacetoxyiodo)benzene, also known as iodobenzene diacetate, has the CAS number 3240 - 34 - 4. It is a high - quality chemical compound with a good price. The chemical formula of (diacetoxyiodo)benzene is C₆H₅I(OCOCH₃)₂. It appears as a white to off - white crystalline powder. The melting point of this compound is typically around 161 - 165 °C. It is sparingly soluble in water but soluble in common organic solvents such as dichloromethane, chloroform, and acetic acid. The purity of our high - quality product is usually above 98%, which ensures its excellent performance in various chemical reactions.
(Diacetoxyiodo)benzene is a versatile reagent in organic synthesis. It is widely used in oxidation reactions. For example, it can be used to oxidize primary alcohols to aldehydes or secondary alcohols to ketones under mild reaction conditions. It is also employed in the α - acetoxylation of carbonyl compounds, which is an important reaction in the synthesis of natural products and pharmaceuticals. In addition, (diacetoxyiodo)benzene can be used in the iodination of arenes, providing a convenient way to introduce iodine atoms into aromatic rings. This reaction is useful in the preparation of iodine - containing compounds for applications in materials science and medicinal chemistry.
When using (diacetoxyiodo)benzene, it is important to follow proper safety procedures. Wear appropriate personal protective equipment, including gloves, safety glasses, and a lab coat. First, select a suitable reaction solvent. As mentioned before, dichloromethane or acetic acid are commonly used. Dissolve the substrate in the solvent in a reaction flask under an inert atmosphere, such as nitrogen. Then, add (diacetoxyiodo)benzene slowly to the reaction mixture while stirring. The reaction temperature and time depend on the specific reaction. Generally, reactions can be carried out at room temperature or slightly elevated temperatures. Monitor the reaction progress by thin - layer chromatography (TLC) or other analytical methods. After the reaction is complete, the product can be isolated by standard work - up procedures, such as extraction, washing, and purification by column chromatography.
Case 1: Oxidation of a primary alcohol to an aldehyde
In a research project aiming to synthesize a key intermediate for a new pharmaceutical compound, a primary alcohol was oxidized using (diacetoxyiodo)benzene. The reaction was carried out in dichloromethane at room temperature. The primary alcohol was first dissolved in dichloromethane in a round - bottom flask under nitrogen. Then, (diacetoxyiodo)benzene was added gradually over 30 minutes. After 2 hours of stirring, TLC analysis showed that the reaction was complete. The reaction mixture was then washed with water, dried over anhydrous sodium sulfate, and concentrated. The crude product was purified by column chromatography, and the desired aldehyde was obtained in a yield of 85%. The mild reaction conditions and high yield demonstrated the effectiveness of (diacetoxyiodo)benzene in this oxidation reaction.
Case 2: α - Acetoxylation of a ketone
In a study focused on the synthesis of a natural product, a ketone was subjected to α - acetoxylation using (diacetoxyiodo)benzene. The reaction was performed in acetic acid at 50 °C. The ketone was dissolved in acetic acid, and (diacetoxyiodo)benzene was added. After 4 hours of reaction, the product was isolated by pouring the reaction mixture into water and extracting with ethyl acetate. The crude product was further purified by recrystallization, and the α - acetoxylated ketone was obtained in a yield of 72%. This case showed that (diacetoxyiodo)benzene is a useful reagent for this type of transformation.
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Este é o William, Diretor Executivo da Zhishang Chemical Co., Ltd.
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