反应详情

Using a procedure similar to part (f) of Example 4, but using 4-[6-(cyclopentyloxycarbonyl)aminoindazol-1-ylmethyl]-3-methoxybenzoic acid (N) instead of acid (J), there was obtained 4-[6-(cyclopentyloxycarbonyl)aminoindazol-1-ylmethyl]-3-methoxybenzoic N,N-diphenylcarbamic anhydride (K) as a pink solid (2.14 g, 96%); partial NMR: (80 MHz, DMSO-d6): 3.86(s, 3H, OCH3), 5.49(s, 2H, ArCH2N), 7.42(s, 10H, NArH), 9.69(s, 1H, CONH).