p-Toluenesulfonic acid → 4-{[(Benzenesulfonyl)imino]methyl}benzoic acid

Participants

Reaction Steps

In a manner similar to Example 2, 1.00 g (6.6 mmol) of 4-carboxybenzaldehyde, 1.05 g (6.6 mmol) of benzenesulfonamide and 20 mg of TsOH in 120 mL of toluene were heated for 2.5 hours to afford 1.82 g (90%) of SULF-2 as a white powder; IR (Nujol) 3400-2400 (br), 1680, 1605, 1283, 1160, 1083 cm-1 ; 1H NMR (DMSO-d6, TMS ext std)δ9 .17 (s, 1), 8.1-7.3 (m, 9).

Provenance & Evidence