1612759-99-5

Upstream product

• 1492879-58-9 4'-(trifluoromethyl)acetophenone acetyloxime 
• 824-79-3 sodium 4-methylbenzenesulfinate 
• 1576-35-8 toluene-4-sulfonic acid hydrazide 
• 177750-09-3 N-(1-(4-(trifluoromethyl)phenyl)vinyl)acetamide 
• 1250437-98-9 1-[4-(trifluoromethyl)phenyl]ethenyl acetate 
• 383-53-9 2-bromo-1-[4-(trifluoromethyl)phenyl]ethanone 
• 1415643-33-2 1-methyl-4-((2-(4-(trifluoromethyl)phenyl)allyl)sulfonyl)benzene 
• 402-50-6 1-trifluoromethyl-4-vinyl-benzene 
• 705-31-7 4-trifluoromethylphenylacetylene 
• 709-63-7 1-(4-trifluoromethylphenyl)ethanone 
• 536-57-2 p-toluene sulfinic acid 
• 96604-36-3 1-(4-trifluoromethylphenyl)-3-(dimethylamino)-prop-2-en-1-one 
• 55186-75-9 4-trifluoromethyl-α-methylstyrene 
• 4124-41-8 p-toluenesulfonylanhydride 

Downstream Products

• 1377813-92-7 2-(toluene-4-sulfonyl)-1-(4-trifluoromethylphenyl)ethanone oxime 

Relevant academic research and scientific papers

The three-component synthesis of 4-Sulfonyl-1,2,3-triazoles via a sequential aerobic copper-catalyzed sulfonylation and dimroth cyclization

4-Sulfonyl-1,2,3-triazole scaffolds possess promising bioactivities and applications as anion binders. However, these structures remain relatively unexplored and efficient synthetic procedures for their synthesis remain desirable. A practical room-temperature, aerobic copper-catalyzed three-component reaction of aromatic ketones, sodium sulfinates, and azides is reported. This procedure allows for facile access to 4-sulfonyl-1,5-disubstituted-1,2,3-triazoles in yields ranging from 34 to 89%. The reaction proceeds via a sequential aerobic copper(II)chloride-catalyzed oxidative sulfonylation and the Dimroth azide–enolate cycloaddition.

Synthesis of β-Keto Sulfones by Oxy-Sulfonylation of Alkynes in HFIP

Herein, we have established a method for the construction of β-keto sulfones through aerobic oxy-sulfonylation of alkynes with sulfinates. The reaction performed employing air as the oxidant and oxygen source. Moreover, this protocol exhibits low consume of sulfinates, short reaction period, and minimal waste. Mechanism study and density functional theory (DFT) calculation showed that the solvent played a significant role in the transformation. (Figure presented.).

Cu(OTf)2-Catalyzed efficient sulfonylation of vinyl azides with sodium sulfinates

A simple oxidative cross-coupling reaction between vinyl azides and sodium sulfinates was developed. This reaction uses commercial arylsulfinates that are more efficient, cheaper, and more stable as sulfonylation reagents, for efficiently, cheaply, and environmentally friendly synthesis of β-keto sulfones. And the reaction has the advantages of simple operation, high efficiency, good yield, and also has a wide range of functional group tolerance.

Method for synthesizing beta-ketosulfone derivative under mild condition and obtained beta-ketosulfone derivative

The invention discloses a method for synthesizing a beta-ketosulfone derivative under a mild condition, which comprises the following steps: dissolving aryl olefin and sodium sulfinate in a solvent in a reaction container, adding an acidic additive, sealing the reaction container under the conditions that air exists in the reaction container and no transition metal exists, and purifying after reaction to obtain the beta-ketosulfone derivative. The free radical addition oxidation reaction of olefin and sulfinic acid can be realized under the mild condition without transition metal, the reaction raw materials are cheap and easy to obtain, no organic metal reagent or transition metal is needed, air is used as an oxidizing agent, no dangerous peroxide or persulfide is needed, and the method is compatible with air. The method has the advantages of simple operation and the like, and overcomes the defects of transition metal participation, large catalyst consumption, expensive reagents, high method cost, more reaction steps, more by-products and the like in the prior art.

Dioxygen-Triggered Oxosulfonylation/Sulfonylation of Terminal Olefins toward β-Keto Sulfones/Sulfones

A dioxygen-triggered oxosulfonylation/sulfonylation of unactivated olefins to achieve β-keto sulfones/sulfones has been developed. Interestingly, pluralistic mechanisms were found when different types of compounds were applied as substrates, and different products were achieved. The reaction is carried out with a high atomic efficiency in the absence of a metal and a catalyst at room temperature under an air atmosphere. Importantly, as a proof-of-concept, a bioactive molecule was synthesized on a gram-scale level using this method.

Oxy-sulfonylation of terminal alkynesviaC-S coupling enabled by copper photoredox catalysis

We report the first literature example using visible light-induced trimethylsilyl azide (TMS-N3)-assisted copper-catalyzed oxy-sulfonylation of terminal C-C bonds to form β-keto sulfones (C-S bond formation). TMS-N3promotes the reaction by facilitating the formation of sulfonyl radicals, which later decompose into N2gas upon light irradiation. This method involves the use of commercially available and stable starting materials. Also, a wide range of functional groups have been well-tolerated under the current photoredox process, evading the side product formation. Potent biologically active compounds, such as CES1, 11β-HSD1 inhibitors, anti-analgesic agents, and reactive synthesis intermediates were synthesized to demonstrate the synthetic utility of the current methodology. Moreover, green chemistry metrics and Eco-scale evaluation for the current photochemical method show that the protocol is eco-friendly and highly efficient.

Photosensitizer-free synthesis of β-keto sulfones: Via visible-light-induced oxysulfonylation of alkenes with sulfonic acids

A practical and environment-friendly methodology for the construction of β-keto sulfones through visible-light induced direct oxysulfonylation of alkenes with sulfonic acids at ambient temperature under open-air conditions was developed. Most importantly, the reaction proceeded smoothly without the addition of any photocatalyst or strong oxidant, ultimately minimizing the production of chemical waste.

A Naphthalimide-Based ND-O-EAc Photocatalyst for Sulfonation of Alkenes to Access β-Ketosulfones Under Visible Light

The development of facile, efficient, cost-effective, and visible light-driven photocatalysts for organic synthetic chemistry has received increasing attention. This protocol has initially synthesized a naphthalimide-based ND-O-EAc visible light photocatalyst for the sulfonation of alkenes to produce β-ketosulfones. Compared with the current photosynthetic strategies, the newly developed catalytic system has some merits, namely high efficiency, gram-scale preparation of low-cost photocatalyst, no metal contamination, wide substrate scope, and green terminal oxidant of air. Moreover, the prepared photocatalyst of ND-O-EAc is feasible for the sulfonation reactions of androstenones. Importantly, such a photocatalysis strategy can easily realize the scale-up synthesis for β-ketosulfone drugs under the mild conditions up to 90 % yield.

Biomimetic photocatalytic sulfonation of alkenes to access β-ketosulfones with single-atom iron site

Biomimetic photocatalysis as an important organic transformation strategy has received increasing attention, with the performances of biomimetic catalysts largely depending on their design. This protocol has been initially used to fabricate a biomimetic photocatalyst of single-atom iron site through coupling carbon nitride with hemin (CNH) for the visible light-promoted sulfonation of alkenes to produce β-ketosulfones with up to 94% yield. The experimental results show that the role of CN in CNH is concentrated on enhancing the separation ability of photogenerated electron pairs and holes to improve the photocatalytic activity and stability. Moreover, the as-prepared photocatalyst of single atom iron can be irradiated under near-infrared light with a satisfactory yield, and is also feasible for the sulfonation reactions of androstenones. Importantly, this biomimetic catalysis-based synthesis system has some merits, namely high catalysis efficiency, favorable recyclability, high turnover number, and excellent functional group tolerance, making it promising for extensive applications in organic transformations for the synthesis of β-ketosulfones to access various bioactive drugs.

Heterogeneous copper-catalyzed oxidative coupling of oxime acetates with sodium sulfinates: An efficient and practical synthesis of β-keto sulfones

An efficient and practical route to β-keto sulfones has been developed through heterogeneous oxidative coupling of oxime acetates with sodium sulfinates by using an MCM-41-supported Schiff base-pyridine bidentate copper (II) complex [MCM-41-Sb,Py-Cu (OAc)2] as the catalyst and oxime acetates as an internal oxidant, followed by hydrolysis. The reaction generates a variety of β-keto sulfones in good to excellent yields. This new heterogeneous copper (II) catalyst can be easily prepared via a simple procedure from readily available and inexpensive reagents and exhibits the same catalytic activity as Cu (OAc)2. MCM-41-Sb,Py-Cu (OAc)2 is also easy to recover and is recyclable up to eight times with almost consistent activity.