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A unique product of 1;2 Shift, Beckmann reaction has it’s good many synthesis application. Beckmann reaction is a general tool in organic chemistry. The reaction requires high reaction temperature; strong acidic conditions and dehydrating media. Amides are important biological and commercial compounds. Because amide constitutes the backbone of protein molecules, their chemistry is of extreme importance. The penicillin and cephalosporin antibiotics are among the best-known products of the pharmaceutical industry. Keep all such things in mind we go for preparation of anilides, which also contribute excellent role to synthesis, various organic compounds. The Beckmann rearrangement requires strong acidic conditions such as conc. Sulphuric acid or Phosphoric acid these have a large amount of side products and serious corrosion problems. So, In recent days the milder conditions were tried and investigated on clean, simple, ecofriendly benign and excellent process became the chemists interesting undertaking. Several improved or developed process are reported using modified reagents and solid acid catalyst like clay, zeolites and silica sulfuric acid. However, the reactions are sluggish when they are performed in the liquid phase. Relatively few solid phase methods have been developed. Also the Beckman reaction using a Stoichiometic amount of cynuric chloride and Dimethyl formamide salt, Reactions was observed with solvents other than Dimethyl formamide and the reaction rate decreased noticeably with a reduced amount of cyanuric chloride in Dimethyl formamide. Also some methods are available for one-pot Beckmann reaction of Acetophenone (ketone). Hence, overcome all such disadvantages we report clean, effective, and simple method for one-pot synthesis of anilides in presence of catalytic amount of silica supported Sulphamic acid using microwave irradiation under solvent free condition.

Silica Supported Sulphamic Acid as Mild Catalyst for Synthesis of Anilides (Beckmann Rearrangement), Using Microwave Irradiation