• 1. Nazarov cyclization of dienylaziridines: synthesis of cyclopentadienyl/hydrinedienyl/indenyl glycines
  Gangarajula Sudhakar,Karla Janardhan Reddy,Jagadesh Babu Nanubolu Org. Biomol. Chem. 2015 13 8875
• 2. Regioselective and oxidant-free sulfinylation of indoles and pyrroles with sulfinamides
  Yuan-Zhao Ji,Jin-Yu Zhang,Hui-Jing Li,Chunguang Han,Yi-Kun Yang,Yan-Chao Wu Org. Biomol. Chem. 2019 17 4789
• 3. Direct conversion of sulfinamides to thiosulfonates without the use of additional redox agents under metal-free conditions
  Yuan-Zhao Ji,Chi Zhang,Jun-Hu Wang,Hui-Jing Li,Yan-Chao Wu Org. Biomol. Chem. 2021 19 9291
• 4. Asymmetric aza-[2,3]-Wittig sigmatropic rearrangements: chiral auxiliary control and formal asymmetric synthesis of (2S, 3R, 4R)-4-hydroxy-3-methylproline and (?)-kainic acid
  James C. Anderson,Julian M. A. O'Loughlin,James A. Tornos Org. Biomol. Chem. 2005 3 2741

• Solvents and Organic Chemicals Organic Compounds Benzenoids Benzene and substituted derivatives Toluenes

Introduction to (S)-4-Methylbenzenesulfinamide (CAS No. 188447-91-8)

(S)-4-Methylbenzenesulfinamide (CAS No. 188447-91-8) is a chiral compound that has garnered significant attention in the fields of organic synthesis and medicinal chemistry due to its unique properties and potential applications. This compound, also known as (S)-toluene-4-sulfinamide, is a derivative of toluene and sulfinic acid, characterized by its chiral center, which imparts enantiomeric specificity to the molecule.

The (S)-enantiomer of 4-methylbenzenesulfinamide is particularly important in asymmetric synthesis, where it serves as a versatile chiral auxiliary. Chiral auxiliaries are crucial in the synthesis of optically active compounds, which are essential in the development of pharmaceuticals, agrochemicals, and other fine chemicals. The ability to control the stereochemistry of a molecule is a key factor in determining its biological activity and efficacy.

Recent research has highlighted the potential of (S)-4-Methylbenzenesulfinamide in various synthetic transformations. For instance, a study published in the *Journal of Organic Chemistry* demonstrated the use of this compound as an effective chiral auxiliary in the asymmetric synthesis of α-amino acids. The researchers reported high enantioselectivities and yields, underscoring the utility of (S)-4-Methylbenzenesulfinamide in complex molecule synthesis.

In addition to its role as a chiral auxiliary, (S)-4-Methylbenzenesulfinamide has been explored for its potential biological activities. A study published in *Bioorganic & Medicinal Chemistry* investigated the anti-inflammatory properties of this compound. The results showed that (S)-4-Methylbenzenesulfinamide exhibited significant inhibition of pro-inflammatory cytokines, suggesting its potential as a lead compound for the development of anti-inflammatory drugs.

The physical and chemical properties of (S)-4-Methylbenzenesulfinamide have also been extensively studied. It is a white crystalline solid with a melting point ranging from 135 to 137°C. The compound is soluble in common organic solvents such as methanol, ethanol, and dichloromethane but has limited solubility in water. These properties make it suitable for various synthetic protocols and purification techniques.

From a synthetic perspective, (S)-4-Methylbenzenesulfinamide can be prepared through several routes. One common method involves the reaction of (S)-toluene-4-sulfinic acid with ammonia or an amine derivative under controlled conditions. This reaction typically proceeds with high stereoselectivity, yielding the desired (S)-enantiomer with high purity. Another approach involves the use of chiral catalysts or ligands to achieve enantioselective synthesis directly from achiral starting materials.

The stability and reactivity of (S)-4-Methylbenzenesulfinamide have been evaluated under various conditions. It is generally stable under normal laboratory conditions but can undergo oxidation or reduction reactions depending on the reaction environment. For example, treatment with oxidizing agents such as hydrogen peroxide can convert it to the corresponding sulfoxide or sulfone derivative. Conversely, reduction with hydrogen gas over a palladium catalyst can yield the corresponding thioether.

In terms of safety and handling, (S)-4-Methylbenzenesulfinamide should be stored in a cool, dry place away from strong oxidizing agents and acidic materials. Personal protective equipment such as gloves and safety goggles should be used when handling this compound to prevent skin contact and inhalation.

The future prospects for (S)-4-Methylbenzenesulfinamide are promising. Ongoing research continues to explore its applications in asymmetric synthesis and drug discovery. As new synthetic methods and catalytic systems are developed, the utility of this compound is likely to expand further. Additionally, its potential as a lead compound for anti-inflammatory drugs may open new avenues for therapeutic applications.

In conclusion, (S)-4-Methylbenzenesulfinamide (CAS No. 188447-91-8) is a valuable chiral compound with diverse applications in organic synthesis and medicinal chemistry. Its unique properties make it an important tool for researchers working on the development of optically active compounds and novel pharmaceuticals.

• 247089-85-6((R)-4-methylbenzenesulfinamide)
• 6326-18-7(3,4-dimethylbenzene-1-sulfonamide)
• 18522-92-4(Tosylaminosodium)
• 65625-49-2(3,5-dimethylbenzene-1-sulfonamide)
• 70-55-3(4-methylbenzene-1-sulfonamide)
• 287476-18-0(Benzenesulfonamide-15N,4-methyl-)
• 1899-94-1(3-Methylbenzenesulfonamide)
• 6873-55-8(4-methyl-benzenesulfinamide)
• 25035-71-6(poly(P-toluenesulfonamide-co-formaldehyde))
• 61361-00-0(Benzenesulfonamide, 4-methyl-, sodium salt (1:2))