6873-54-7

Upstream product

• 10439-23-3 4-methylbenzenesulfinyl chloride 
• 2216-51-5 (-)-menthol 
• 62-53-3 aniline 
• 536-57-2 p-toluene sulfinic acid 
• 672-78-6 methyl p-toluene sulfinate 
• 1858-86-2 Ethyl p-toluenesulfinate 
• 591-50-4 iodobenzene 
• 1084328-60-8 C₁₁H₁₈N₂OS 
• 1310710-45-2 C₁₃H₂₀N₂OS 
• 1310710-46-3 C₁₂H₁₄N₂O₂S 
• 6873-87-6 N-butyl-4-methylbenzene-1-sulfinamide 
• 55552-83-5 N-cyclohexyl-4-methylbenzenesulfinamide 
• 108-91-8 cyclohexylamine 
• 103-19-5 di(p-tolyl) disulfide 

Downstream Products

• 632-50-8 1,1,2,2-tetraphenylethane 
• 2943-42-2 di(4-methyl)phenylthiosulfonate 
• 123858-22-0 4-Methyl-2-deuteriobenzenesulfinanilide 
• 123552-85-2 N-phenyl-S-(4-methylphenyl)sulfoximidoyl chloride 
• 138711-67-8 4-Methyl-benzenesulfinic acid (S)-allyl-phenyl-amide 

Relevant academic research and scientific papers

Rare-Earth-Catalyzed Transsulfinamidation of Sulfinamides with Amines

A rare-earth-catalyzed transsulfinamidation of primary sulfinamides with alkyl, aryl, and heterocyclic amines for the synthesis of diverse secondary and tertiary sulfinamides has been realized. Unlike transition metal-catalyzed cross-coupling approaches restricted to non-commercially available disubstituted O-benzoyl hydroxylamines, this newly developed protocol is suitable for diverse readily available primary and secondary amines without any modifications. Excellent catalytic activity and selectivity are achieved with Eu(OTf)3 under mild reaction conditions, which extends the applicability of rare-earth catalysis.

Synthetic preparation of N-alkyl and N-aryl arenesulfinamides using an arenesulfinic acid-CDI driven approach

A new synthetic methodology has been developed for the synthesis of N-alkyl and N-aryl arenesulfinamides. The methodology involved reacting arenesulfinic acids (R = -Me, -H, -Cl) with 1,1’-carbonyldiimidazole (CDI) to form the reactive intermediate, an arenesulfinylimidazole. This intermediate was then reacted with both primary and secondary amines to yield the corresponding N-alkyl sulfinamides in yields up to 90%. While the overall yields ranged from 52% to 90%, the level of diastereoselection with racemic or enantiomerically enriched amines only reached a level of 54:46 favoring the major diastereomer as determined by analysis of the 500 MHz 1H NMR spectra. A series of aniline derivatives were also investigated as coupling partners and were found to form the N-aryl arenesulfinamide in good yield.

Ni/NHC-catalyzed cross-coupling of methyl sulfinates and amines for direct access to sulfinamides

It was reported to develop a simple and convenient method for the Ni/NHC-catalyzed cross-coupling of methyl sulfinates and amines without an acid/base to afford secondary or tertiary sulfinamides in moderate to good yields. The method can provide the desired products with broad substrate scope, good chemoselectivity and good functional group compatibility. The presented approach may enrich the Ni/NHC catalyst system and promote the applications of methyl sulfinates in the organic sulfur chemistry.

Visible-Light-Accelerated C?H Sulfinylation of Heteroarenes

Heteroaromatic sulfoxides are a frequent structural motif in natural products, drugs, catalysts, and materials. We report a metal-free visible-light-accelerated synthesis of heteroaromatic sulfoxides from sulfinamides and peroxodisulfate. The reaction proceeds at room temperature with blue-light irradiation and allows the C?H sulfinylation of electron-rich heteroarenes, such as pyrroles and indoles. An electrophilic aromatic substitution mechanism is proposed based on the substrate scope, substitution selectivity, and competition experiments with different nucleophiles.

Palladium-catalyzed C-N cross coupling of sulfinamides and aryl halides

The palladium-catalyzed C-N cross coupling of sulfinamides and aryl halides is reported. In the presence of Pd2(dba)3, tBuXPhos, NaOH, and a small amount of water, the C-N cross coupling of chiral tert-butanesulfinamide and aryl halides was accomplished to give N-aryl tert-butanesulfinamide without racemization, and the coupling of racemic p-toluenesulfinamide smoothly afforded N-aryl p-toluenesulfinamides. 2-Bromopyridine was also suitable for the coupling. Addition of a small amount of water to the catalytic system was of importance to obtain high yields.

Functionalization of mesoporous carbon with superbasic MgO nanoparticles for the efficient synthesis of sulfinamides

Highly basic MgO nanoparticles with different sizes have been successfully immobilized over mesoporous carbon with different pore diameters by a simple wet-impregnation method. The prepared catalysts have been characterized by various sophisticated techniques, such as XRD, nitrogen adsorption, electron energy loss spectroscopy, high-resolution TEM, X-ray photoelectron spectroscopy, and the temperature-programmed desorption of CO2. XRD results reveal that the mesostructure of the support is retained even after the huge loading of MgO nanoparticles inside the mesochannels of the support. It is also demonstrated that the particle size and dispersion of the MgO nanoparticles on the support can be finely controlled by the simple adjustment of the textural parameters of the supports. Among the support materials studied, mesoporous carbon with the largest pore diameter and large pore volume offered highly crystalline small-size cubic-phase MgO nanoparticles with a high dispersion. The basicity of the MgO-supported mesoporous carbons can also be controlled by simply changing the loading of the MgO and the pore diameter of the support. These materials have been employed as heterogeneous catalysts for the first time in the selective synthesis of sulfinamides. Among the catalysts investigated, the support with the large pore diameter and high loading of MgO showed the highest activity with an excellent yield of sulfinamides. The catalyst also showed much higher activity than the pristine MgO nanoparticles. The effects of the reaction parameters, including the solvents and reaction temperature, and textural parameters of the supports in the activity of the catalyst have also been demonstrated. Most importantly, the catalyst was found to be highly stable, showing excellent activity even after the third cycle of reaction. Reuse and recycle: Highly basic MgO-functionalized mesoporous carbon with different pore diameters has been prepared (see picture). The material showed a much higher performance in the synthesis of sulfinamides than pure MgO nanoparticles. The catalyst was also highly stable and could be reused several times without affecting its activity. Copyright

Methyl sulfinates as electrophiles in friedel-crafts reactions. Synthesis of aryl sulfoxides

The Friedel-Crafts reaction of methyl alkyl- and arylsulfinates with aromatic systems, activated by one or more electron-donating substituents (OH, OMe, NHR, NR2), provides alkyl aryl and diaryl sulfoxides under mild conditions and in moderate to good yields. The very high regioselectivity usually observed in these sulfinylation reactions is rationalized on the basis of a Wheland intermediate having a trigonal bypyramidal structure in which steric and electronic interactions are significant factors strongly destabilizing the attack to the ortho positions.

Copper-catalyzed N-arylation of sulfonimidamides

An efficient copper-catalyzed method for introducing aryl substituents on the amino end of sulfonimidamides has been developed. Microwave irradiation allows for short reaction times and good yields, and a variety of aromatics can be coupled. Georg Thieme

Monoalkylation of primary amines and N-sulfinylamides

An efficient monoalkylation of primary amines with primary or secondary alcohols catalyzed by Ra-Ni under mild conditions is described. The Royal Society of Chemistry.

Electrochemical oxidation of N-p-toluenesulfinamides

Matrix presented Contrasting and interesting electrochemical behavior is observed in anodic oxidation of N-substituted p-toluenesulfinamides under controlled current conditions. For sulfinamides derived from secondary alkylamines and primary arylamines, the N-sulfinyl group is removed and the corresponding amines are formed; for sulfinamides derived from primary alkylamines, sulfur oxidation yields the corresponding sulfonamides in good yields.