New Comb-like Polyamides and Polyesters

Solid-supported synthesis of hyperbranched polymer with ?,?-diethynylstyryl units

“…This was prepared by the alkaline hydrolysis of aminoterephthalate followed by the diazotation of the resulting aminoterephthalic acid ( 1 ) according to the method of Fomin et al 9 Yield 84 %, mp > 300 °C. 1 H NMR (DMSO‐ d 6 ; δ in ppm), 14.0 (bs 2H COOH), 10.39 (d, 1H, J = 8.8 Hz, meta to OH), 10.00–9.95 (m, 2H, ortho and para to OH), 5.01 (s, 1H, OH).…”