... A CLEAN CLAY CATALYSED SYNTHESIS OF d,N-DIARYLNITRONES Chockalingam Venkatachalapathy, Muniappan Thirumalaikumar, Shanmugam Muthusubramanian, Kasi PitchuTani and Shunmugaperumal Sivasubramanian School of Chemistry, Madurai Kamaraj University, Madurai - 625 021, India ... Page 6. 4046 VENKATACHALAPATHY ET AL. chlorideI9 and clay (1:l w/w mixture with respect to ... Chem. Commun., 1990, 1613; Pitchumani, K., Baskar. ...