343349-98-4

Upstream product

• 530-48-3 1,1-Diphenylethylene 
• 106-54-7 p-Chlorothiophenol 
• 103-30-0 (E)-1,2-diphenyl-ethene 
• 138234-43-2 (+/-)-Methyl 3-<(4-chlorophenyl)sulfinyl>propanoate 
• 599-67-7 1,1-diphenylethanol 
• 100-03-8 4-chlorobenzenesulfinic acid 
• 54696-23-0 Methyl 3-<(4-chlorophenyl)sulfenyl>propanoate 
• 14752-66-0 sodium p-chlorobenzenesulphinate 
• 100954-03-8 phenyl 3-phenylprop-2-ynoate 

Relevant academic research and scientific papers

Preparation method of thioether derivative

The invention discloses a preparation method of a thioether derivative, which comprises the following steps: (1) in a nitrogen atmosphere, mixing a sulfoxide compound, an olefin compound/alkyne compound/1, 3-dicarbonyl compound, an organic solvent and trifluoroacetic anhydride/trifluoromethanesulfonic anhydride, and reacting at 0-60 DEG C for 1-24 hours; (2) adding alkali into the material obtained in the step (1), reacting at room temperature for 0.5-1.5 hours, and washing with water to obtain an organic phase; and (3) carrying out post-treatment and purification on the organic phase obtained in the step (2) to obtain the thioether derivative. The method is suitable for constructing alkenyl thioether, alkynyl thioether and alkyl thioether derivatives at the same time, and is high in universality. The method has the advantages of easily available raw materials, high yield, mild reaction conditions, short reaction time, wide substrate range, strong reaction specificity, and simple and green post-treatment.

Sodium iodide-mediated synthesis of vinyl sulfides and vinyl sulfones with solvent-controlled chemical selectivity

Vinyl sulfides and vinyl sulfones are ubiquitous structures in organic chemistry because of their presence in natural and biologically active compounds and are very frequently encountered structural motifs in organic synthesis. Herein we report an efficie

Site-Selective Acceptorless Dehydrogenation of Aliphatics Enabled by Organophotoredox/Cobalt Dual Catalysis

The value of catalytic dehydrogenation of aliphatics (CDA) in organic synthesis has remained largely underexplored. Known homogeneous CDA systems often require the use of sacrificial hydrogen acceptors (or oxidants), precious metal catalysts, and harsh reaction conditions, thus limiting most existing methods to dehydrogenation of non- or low-functionalized alkanes. Here we describe a visible-light-driven, dual-catalyst system consisting of inexpensive organophotoredox and base-metal catalysts for room-temperature, acceptorless-CDA (Al-CDA). Initiated by photoexited 2-chloroanthraquinone, the process involves H atom transfer (HAT) of aliphatics to form alkyl radicals, which then react with cobaloxime to produce olefins and H2. This operationally simple method enables direct dehydrogenation of readily available chemical feedstocks to diversely functionalized olefins. For example, we demonstrate, for the first time, the oxidant-free desaturation of thioethers and amides to alkenyl sulfides and enamides, respectively. Moreover, the system's exceptional site selectivity and functional group tolerance are illustrated by late-stage dehydrogenation and synthesis of 14 biologically relevant molecules and pharmaceutical ingredients. Mechanistic studies have revealed a dual HAT process and provided insights into the origin of reactivity and site selectivity.

Transition Metal-Free C-H Thiolation via Sulfonium Salts Using β-Sulfinylesters as the Sulfur Source

We disclose a direct C(sp)-, C(sp2)-, and C(sp3)-H thiolation reaction using β-sulfinylesters as the versatile sulfur source. The key step of this protocol is chemoselective C-S bond cleavage of the sulfonium salts that are formed in situ from the corresponding alkenes, alkynes, and 1,3-dicarboxyl compounds with β-sulfinylesters. The successful capture of the acrylate byproduct supports a retro-Michael reaction mechanism.

1,1-Diphenylvinylsulfide as a Functional AIEgen Derived from the Aggregation-Caused-Quenching Molecule 1,1-Diphenylethene through Simple Thioetherification

An efficient and readily scalable thioetherification between 1,1-diphenylethene (DPE) and sodium arylsulfinate was developed for the synthesis of 1,1-diphenylvinylsulfide (DPVS) with the yield up to 99 %. The photophysical properties of DPVS show that the introduction of arylsulfenyl groups onto the parent molecule DPE makes DPVS a novel type of aggregation-induced emission (AIE) luminogen (AIEgen) with large Stoke's shift (up to 188 nm). These DPVS possess AIE properties due to restriction of intramolecular motions (RIM), as demonstrated by crystal structure analysis. Importantly, the AIE performance of DPVS can be applied to sense the nitroaromatic explosive picric acid in aqueous systems through a “turn-off” response.

Preparation method of distyrene thioether compounds

The invention discloses a preparation method of distyrene thioether compounds. The preparation method includes following steps: dispersing 1, 1-distyrene, aryl/alkyl sodium sulfinate and acidic reductant into a solvent, and allowing coupling reaction to obtain the distyrene thioether compound. The preparation method can systematically synthesize a series of the distyrene thioether compounds and isneedless of adopting a transitional metal catalyst, simple in reaction system, wide in substrate application range, high in yield, easy-to-obtain in reaction raw material, low in cost and little in pollution.

Synthesis of Trisubstituted Vinyl Sulfides via Oxidative Thiolation Initiated Cascade Reaction of Alkynoates with Thiols

A thiolation initiated cascade reaction of aryl alkynoates has been developed with thiol as a coupling partner. This radical process has been demonstrated to proceed through S-H bond cleavage, thiolation of alkynoate, aryl migration, and decarboxylation. This reaction tolerates a wide scope of substrates resulting in good chemical yields, which provides an easy and practical strategy for preparation of trisubstituted vinyl sulfides.

Radical-Radical Cross-Coupling for C-S Bond Formation

A new method was demonstrated to overcome the selectivity issue of radical-radical cross-coupling toward the synthesis of asymmetric diaryl thioethers. The preliminary mechanism was revealed by radical-trapping experiments, DFT calculations, and kinetics,