Polymer supported reagents have become the subject of considerable and increasing interest as insoluble materials in the organic synthesis. Use of polymeric reagents simplifies routine nitration of aromatic compounds because it eliminates traditional purification. In this article, the use of readily available cross-linked poly(4-vinylpyridine) supported sodium nitrite, [P 4 -Me] NO 2 , as an efficient polymeric nitrating agent in the presence of KHSO 4 is described. A good range of available aromatic compounds were also subjected to nitration in the presence of [P 4 -Me] NO 2 /KHSO 4 . This reagent is regioselective and chemoselective nitrating polymeric reagent for activated aromatic rings. In this procedure, the work-up is easy, and the spent polymeric reagent is easily regenerated and reused.

A variety of aromatic compounds are nitrated under heterogeneous conditions using a polymersupported hydrochloric acid, [P 4 -(VP)]HCl, with a polymersupported sodium nitrite, [P 4 -VP]NO 2 , or sodium nitrite in ethanol at room temperature with high yields. This methodology is useful for nitration of activated aromatic com-pounds. In this procedure, the work-up is very easy, and the spent polymeric reagent can be regenerated and reused.