Abstract
First-tier (G1) 2,4,6-tridiethymalonate-triazine (2,4,6-TDEMTA) and second-tier (G2) 2,4,6-hexadiethylmalonate-triazine (2,4,6-HDEMTA) dendrimers were prepared with melamine (1,3,5-triazine) as core (G0) and sodium malonate ester for bifurcation of chains. The trichlorotriazine (TCT) and sodium diethyl malonate (SDEM) aqueous solutions were mixed, and a creamy white precipitate of G1 was obtained. The G1 was hydrolyzed in alkaline medium to prepare 2,4,6-tridisodiummalonate-triazine (2,4,6-TDSMTA) by replacing −C2H5 groups of COOC2H5 by Na, which was further neutralized by dilute HCl to obtain 2,4,6-trimalonicacid-triazine (2,4,6-TMATA). The TMATA was treated with PCl5(s) to form –COCl, which was treated with SDEM to form the G2.
ACKNOWLEDGMENT
The authors are thankful to University Grant Commission, Government of India, for financial support, Dr. A. P. Raste, principal, Deshbandhu College, for infrastructural support; Prof. A. K. Singh, Chemistry Dept. Indian Institute of Technology–Delhi, for discussions; Mr. Mukesh Kumar for assisting benchwork; and Mr. J. P. Gupta for moral support and cooperation with Shalini Gupta.