Bis(2-Methoxyethyl)aminosulfur Trifluoride: Versatility in Fluorination Reactions
Aug 20,2024
General Description
Bis(2-methoxyethyl)aminosulfur trifluoride is a versatile chemical reagent critical for various deoxofluorination reactions, adeptly converting alcohols, aldehydes, and carboxylic acids into fluorinated derivatives. Its enhanced thermal stability and effectiveness make it valuable in organic synthesis, especially in the fluorination of thiocarbonyl compounds and the one-pot synthesis of amides and oxazolines from carboxylic acids. Bis(2-methoxyethyl)aminosulfur trifluoride enhances the synthetic accessibility of complex fluorinated compounds and nitrogen-containing heterocycles, which is increasingly vital in pharmaceuticals and agrochemicals. Overall, bis(2-methoxyethyl)aminosulfur trifluoride is an essential tool for advancing modern organic chemistry.
Figure 1. Bis(2-methoxyethyl)aminosulfur trifluoride
Overview
Chemical Properties
Bis(2-methoxyethyl)aminosulfur trifluoride is a specialized chemical reagent notable for its ability to facilitate a wide range of deoxofluorination reactions. This reagent plays a key role in converting various functional groups, including alcohols, aldehydes, and carboxylic acids, into their corresponding fluorinated derivatives. For instance, Bis(2-methoxyethyl)aminosulfur trifluoride efficiently transforms alcohols into alkyl fluorides, aldehydes and ketones into gem-difluorides, and carboxylic acids into trifluoromethyl derivatives. What sets this compound apart is its enhanced thermal stability compared to other reagents in this category, such as dialkylaminosulfur trifluoride. This characteristic makes Bis(2-methoxyethyl)aminosulfur trifluoride suitable for various chemical transformations, thereby providing significant versatility in organic synthesis. 1
Advantages and Applications
The advantages of Bis(2-methoxyethyl)aminosulfur trifluoride extend beyond its thermal stability; it also mitigates the risk of decomposition during standard reaction conditions. This stability is critical for expanding its applications, rendering it highly valuable in both chemical research and industrial processes. The reagent's efficiency across multiple functional groups—such as alcohols, aldehydes, ketones, and carboxylic acids—highlights its utility in generating fluorinated compounds with remarkable accuracy. Consequently, Bis(2-methoxyethyl)aminosulfur trifluoride is often the preferred choice for complex deoxofluorination reactions, equipping chemists with a reliable tool to produce fluorinated intermediates essential for further synthesis. This broad applicability reinforces the importance of this reagent in advancing modern organic chemistry. 1
Applications in Organic Chemistry
Fluorination of Thiocarbonyl Compounds
Bis(2-methoxyethyl)aminosulfur trifluoride plays a significant role in the fluorination of thiocarbonyl compounds, including thioketones, thioesters, thioamides, dithioesters, and dithiocarbamates. This reagent has demonstrated its effectiveness in converting these various thiocarbonyl derivatives into the corresponding gem-difluorides in excellent yields. The reaction is enhanced by the presence of antimony trichloride, which acts as a catalyst. The ability of bis(2-methoxyethyl)aminosulfur trifluoride to facilitate the formation of gem-difluorides underscores its utility in fluorination reactions, providing a straightforward method for synthesizing these fluorinated targets. This application showcases how this reagent contributes to the burgeoning field of organofluorine chemistry.
One-Pot Synthesis of Amides and Oxazolines
Bis(2-methoxyethyl)aminosulfur trifluoride also finds extensive application in the one-pot synthesis of amides and oxazolines from carboxylic acids. This reaction is particularly advantageous as it allows for a mild and highly efficient transformation in a single step. By leveraging the unique properties of bis(2-methoxyethyl)aminosulfur trifluoride, chemists can achieve the condensation and cyclization of a variety of acids to produce amides or oxazolines effectively. Recent studies have demonstrated successful parallel syntheses of several free fatty acids leading to high-yield production of desired functional groups. This versatility highlights the potential of bis(2-methoxyethyl)aminosulfur trifluoride in organic synthesis. 2
Enhancing Synthetic Accessibility
The use of bis(2-methoxyethyl)aminosulfur trifluoride significantly enhances the synthetic accessibility of complex fluorinated compounds and nitrogen-containing heterocycles in organic chemistry. Its role in the efficient conversion of thiocarbonyl derivatives and the straightforward one-pot synthesis demonstrates its importance as a fluorinating agent. The ability to facilitate these transformations with commendable yields opens new avenues for researchers looking to incorporate fluorine into organic molecules, given the increasing importance of fluorinated compounds in pharmaceuticals and agrochemicals. Thus, bis(2-methoxyethyl)aminosulfur trifluoride stands as a critical tool for organic chemists aiming to harness the unique properties of fluorine in their synthetic endeavors. 3
Reference
1. National Center for Biotechnology Information (2024). PubChem Compound Summary for CID 2734690, Bis(2-methoxyethyl)aminosulfur trifluoride.
2. Kangani CO, Kelley DE. One pot direct synthesis of amides or oxazolines from carboxylic acids using Deoxo-Fluor reagent. Tetrahedron Lett. 2005; 46(51): 8917-8920.
3. Lal GS, Lobach E, Evans A. Fluorination of thiocarbonyl compounds with Bis(2-methoxyethyl)aminosulfur trifluoride (Deoxo-fluor reagent): A facile synthesis of gem-difluorides. J Org Chem. 2000; 65(16): 4830-4832.
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Aug 20,2024APIBis(2-methoxyethyl)aminosulfur trifluoride
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