Synthesis of Starch Nanocatalysts and Use in the Green Synthesis of Heterocyclic Naphthyropane Derivatives

The development of environmentally benign, efficient, and economical methods for the synthesisof biologically interesting compounds remains a significant challenge in syntheticchemistry [1]. The use of Nano-catalysts to carry out and advance chemical processes todayhas become an integral part of the research on green chemistry. In this field, the use of modifiedcatalysts with organic chemical particles or natural chemicals with specific chemicalproperties plays a role in the synthesis of organic compounds, especially derivatives of heterocycliccompounds [2]. Synthesis of nafthopyran is important because of its extensive biologicaland therapeutic properties such as anti-bacterial, anti-viral and anti-inflammatory [3].Taking in to account the importance and the principles of green chemistry the use of solfonatingstarch nano particle as a new catalyst, non-toxic and effective for compression benzaldehydederivatives, 2-hydroxynaphtalene-1,4-dione and indene-1,3-dionehas been used. Onepotquantitative procedure for the preparation of functionalized 12-arylbenzo[g]indeno[1,2-b]chromene-6,11,13(12H)-trione Derivatives in the presence of solfonating starch nano particleunder reflux conditions: (***) The advantages of this approach are; the use of available, cheap and non-toxic catalyst, highefficiency, the short of time reaction with less pollution.