22017-47-6Relevant academic research and scientific papers
Highly efficient one-pot synthesis of N-acylsulfonamides using cyanuric chloride at room temperature
Soltani Rad, Mohammad Navid,Khalafi-Nezhad, Ali,Asrari, Zeinab,Behrouz, Somayeh
experimental part, p. 2599 - 2603 (2010/09/07)
A highly efficient and very mild one-pot synthesis of N-acylsulfonamides is described using cyanuric chloride. In this synthesis, structurally diverse carboxylic acids and sulfonamides are reacted in the presence of cyanuric chloride, triethylamine, and alumina in anhydrous acetonitrile at room temperature to afford various N-acylsulfonamides in excellent yields. Georg Thieme Verlag Stuttgart New York.
Novel urea (thiourea) derivative and thermal recording sheet using same
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, (2008/06/13)
Compounds of formula (I) : wherein A is hydrogen, C1-C4 alkyl, C1-C4 alkoxy, hydroxy or nitro; R1, R2, and R3, which may be the same or different, are each hydrogen, C1-C4 alkyl, C1-C4 alkoxy, hydroxy or nitro, or R1 and R2 form, together with the carbon atoms to which they are attached, an aromatic ring; and Y is a sulphur or oxygen atom; and formula (II) : wherein B is hydrogen, C1-C4 alkyl, C1-C4 alkoxy, hydroxy or nitro; R1, R2, and R3, which may be the same or different, are each hydrogen, C1-C4 alkyl, C1-C4 alkoxy, hydroxy or nitro, or R1 and R2 form, together with the carbon atoms to which they are attached, an aromatic ring; and Y is a sulphur of oxygen atom; are used in the color developing layer of a thermal recording sheet which comprises a basic colorless dye and an organic color developer.
