A facile and versatile method for acylation of structurally diverse amines and sulfonamides under focused ultrasonic irradiation in catalyst-free and solvent-free conditions is reported. There are several advantages to this approach such as simple and easier workup conditions, small amount of time and high yielding. The acylation reaction was carried out with acetic anhydride. All structures of synthesized products have been identified by NMR and mass spectroscopy.
A new series of chiral 5-substituted bis-oxazolidinones containing an acylsulfonamide moiety has been synthesized starting from chlorosulfonyl isocyanate, (L)-ethyl lactate, and oxazolidin-2-ones. All the reactions were conducted at ambient temperature, and the N-acylsulfonamide bis-oxazolidin-2-ones were obtained with high yields within 2 h. Some of the newly synthesized compounds were evaluated in vitro against the virulent strain RH of Toxoplasma gondii and the human lymphocytes, and showed promising results.
The title compound, C9H12N2O2S, is a useful precursor of a variety of modified sulfonamide molecules. Due to the importance of these molecules in biological systems (antibacterials, antidepressants and many other applications), there is a growing interest in the discovery of new biologically active compounds. In the title compound, the molecules are linked by N—H⋯O intermolecular hydrogen bonds involving the sulfonamide function to form an infinite two-dimensional network parallel to the (001) plane.
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