p-Toluenesulfonic acid → N-(4-Carboxybenzylidene)-3-nitrobenzenesulfonamide

Beteiligte Stoffe

Reaktionsschritte

In a similar manner to Example 2, 2.02 g (10 mmol) of 3-nitrobenzenesulfonamide, 1.50 g (10 mmol) of 4-carboxybenzaldehyde and 20 mg of TsOH in 150 mL of toluene were heated for 5 hours to yield 3.23 g (97%) of SULF-6 as a white powder: IR (Nujol) 3200-2500 (br), 1685, 1554, 1379, 1352, 1165 cm-1 ; 1H NMR (DMSO-d6, TMS ext std)δ 9.24 (s, 1), 8.47 (s, 1), 7.9-6.9 (m, 7).

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