9-hydroxy-4-iodopyrrolo[3,4-c]carbazole-1,3(2H,6H)-dione → 9-hydroxy-4-(3-hydroxy-4-methoxyphenyl)pyrrolo[3,4-c]carbazole-1,3(2H,6H)-dione

Participants

Reaction Steps

The reaction of 9-hydroxy-4-iodopyrrolo[3,4-c]carbazole-1,3(2H,6H)-dione, prepared as in example 7, with 3-hydroxy-4-methoxybenzeneboronic acid according to the procedure described in example 8 gave 9-hydroxy-4-(3-hydroxy-4-methoxyphenyl)pyrrolo[3,4-c]carbazole-1,3(2H,6H)-dione (10) (1, Ar=3-hydroxy-4-methoxyphenyl) (51%), mp 265° C. (dec). 1H NMR δ [(CD3)2SO] 11.67 (s, 1H), 10.96 (s, 1H), 9.22 (s, 1H), 9.15 (s, 1H), 8.33 (d, J=2.4 Hz, 1H), 7.57 (s, 1H), 7.41 (d, J=8.7 Hz, 1H), 7.22 (d, J=2.0 Hz, 1H), 7.06–6.99 (m, 2H), 6.85 (d, J=8.1 Hz, 1H), 3.81 (s, 3H). EIMS found M+: 374.0900. C21H14N2O5 requires 374,0903.

Provenance & Evidence