Ferric Hydrogensulfate as Effective and Recyclable Catalyst for Mild Dithioacetalization of Aldehydes and Ketones

Melamine-Trisulfonic-Acid-Catalyzed Trimethylsilylation of Alcohols and Phenols

“…23 However, many of these methodologies are associated with one or more disadvantages such as (i) harsh reaction conditions, e.g., treatment with air sensitive agents such as trichloroisocyanuric acid at CH 2 Cl 2 for 4 h, 10 heating at 85 • C in PhMe catalyzed by alumina-supported heteropolyoxometalates, 15 19 (ii) prolonged reaction time; 10,14,16 (iii) requirement for hazardous and carcinogenic organic solvents such as CH 3 CN, 3,9,12,17,19,20,21,23 CH 2 Cl 2 , 7,8,10,11,16,22 PhMe; 15 (iv) use of toxic, costly, or air sensitive catalysts. 3,8,10,13,18,23 Thus, the development of environmentally benign, high-yielding, and clean approaches for the silylation of hydroxyl groups in demand.…”

Introducing new method for the synthesis of polycyclic compounds containing [1,3]dithiine derivatives, with anticancer and antibacterial activities against common bacterial strains between aquatic and human

“…[1,3]Dithiine heterocyclic compounds contain two sulfur atoms in their structure. The use of carbon disulfide, daimedone, and activated methylene in the presence of triethylamine as the base catalyst [5] and the use of 1 and 3 propane thiols and compounds containing the carbonyl group in the presence of various catalysts [6,7] were among the methods that presented in the synthesis of [1,3]dithiine derivatives. Recently, heterocyclic compounds containing [1,3]dithiine derivatives with antibacterial properties have been reported.…”

MgO‐Nanoparticle‐Catalyzed Synthesis and Evaluation of Antimicrobial and Antioxidant Activity of New Multi‐Ring Compounds Containing Spiro[indoline‐3,4′‐[1,3]dithiine]

“…Various methods have been reported for synthesizing these compounds. The most common method is carbonyl group and propane‐1,3‐dithiol utilized in the presence of different catalysts . Of course, there are other methods that have been reported for this purpose; for example, Mehrabi et al.…”