Efficient synthesis of 9-aryl-1,8-dioxo-octahydroxanthenes using melamine trisulfonic acid under thermal, microwave and ultrasound conditions
نویسندگان
1 Department of Chemistry, Payame Noor University, PO BOX 19395-3697, Tehran, Iran c Young Researchers Club, Takestan Branch, Islamic Azad University, Takestan, Iran
2 Department of Chemistry, Payame Noor University, PO BOX 19395-3697, Tehran, Iran
3 Department of Chemistry, University of Sayyed Jamaleddin Asadabadi, Asadabad 6541835583, Iran
4 Young Researchers Club, Takestan Branch, Islamic Azad University, Takestan, Iran
5 Department of Chemistry, Payame Noor University, PO BOX 19395-3697, Tehran, Iran
6 Young Researchers Club, Takestan Branch, Islamic Azad University, Takestan, Iran
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چکیده
In this work, efficient synthesis of 9-aryl-1,8-dioxo-octahydroxanthene derivatives from 1,3-cyclohexanediones and arylaldehydes in the presence of catalytic amount of melamine trisulfonic acid (MSTA) is described. The reaction is studied under thermal (solvent-free/80 °C),microwave (solvent-free/180 W/90 °C) and ultrasound (solvent/34-37 kHz/350 W/60 °C) conditions.
