Reacción #11152

Ecuación de reacción

BBr3

4-(2-Chloro-6-methoxyphenyl)-6-(2-hydroxyethyl)-9-methoxypyrrolo[3,4-c]carbazole-1,3(2H,6H)-dione

example 170

benzyl 9-methoxy-1,3-dioxo-1,2,3,6-tetrahydropyrrolo[3,4-c]carbazole-4-carboxylate

methanesulphonyl chloride

→

2-(4-(2-Chloro-6-methoxyphenyl)-9-hydroxy-1,3-dioxo-2,3-dihydropyrrolo[3,4-c]carbazol-6 (1H)-yl)ethyl methanesulfonate

Condiciones de reacción

Procedimiento

Reaction of 4-(2-Chloro-6-methoxyphenyl)-6-(2-hydroxyethyl)-9-methoxypyrrolo[3,4-c]carbazole-1,3(2H,6H)-dione (V; Ar=2-chloro-6-methoxyphenyl, R10═CH2CH2OH) (111) prepared as described in example 63 with methanesulphonyl chloride, followed by reaction with BBr3 using the procedure described in example 170 of Scheme 3 gave 2-(4-(2-Chloro-6-methoxyphenyl)-9-hydroxy-1,3-dioxo-2,3-dihydropyrrolo[3,4-c]carbazol-6 (1H)-yl)ethyl methanesulfonate (VII; Ar=2-chloro-6-methoxyphenyl, n=2, mesylate) (114), as a yellow solid, which was used without further purification.

Fuente