Ethyl 3-(step 3,cuatro-dihydroxy-benzamido)benzoate (3): Substance step 3 are synthesized with respect to the standard procedure using twenty-two (0 0six g, 0.13 mmol) and was obtained as a white solid (0.03 g, 0.11 mmol, 81 %). 1 H NMR (500 MHz,
Ethyl 3-(step 3,cuatro-dihydroxy-benzamido)benzoate (3): Substance step 3 are synthesized with respect to the standard procedure using twenty-two (0 0six g, 0.13 mmol) and was obtained as a white solid (0.03 g, 0.11 mmol, 81 %). 1 H NMR (500 MHz,