Triethylamine → (2-Methylcarbamoyl-6-oxo-5,6-dihydro-1H-[1,2]diazepino[4,5,6-cd]indol-8-yl)-carbamic acid tert-butyl ester

Participants

Reaction Steps

Preparation of example 161 was carried out in a manner analogous to step 5 of Example 147, except that methylamine hydrochloride was substituted for methanol. Thus CO was bubbled through a mixture of Intermediate 147(d) from Example 147 (200 mg, 0.529 mmol), triethylamine (0.29 mL, 2.11 mmol), methylamine hydrochloride (71 mg, 1.06 mmol), and 1,1′-bis(diphenylphosphino)ferrocenedichloropalladium (II) (86 mg, 0.106 mmol). Reaction conditions, work up and silica gel chromatography (eluted with 46:4:25 dichloromethane:methanol:ethyl acetate) were also carried out in an analogous manner and afforded the title compound (55 mg, 0.154 mmol) in 29% yield.

Provenance & Evidence