Tris(hydroxymethyl)aminomethane → HCID 22291576, compound

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Reaction Steps

To a stirred solution of 8-amino-1-{4-[(dimethylamino)sulfonyl]phenyl}-4,5-dihydro-1H-benzo[g]indazole-3-carboxamide (Example 46) (1.52 g, 3.70 mmol) in pyridine (25 mL) at RT was added 2-chlorobenzoic chloride (970 mg, 5.55 mmol). After 14 h, trisamine (1 g) was added and the mixture was stirred for 2 h. The mixture was filtered through a silica gel pad with EtOAc and concentrated. Column chromatography (silica gel, EtOAc) gave the title compound as a yellow solid (900 mg, 1.63 mmol, 44%). Its structure was confirmed by 1H NMR and MS (551, M+1). C27H24ClN5O4S, Calc.: C: 58.96; H: 4.40, N: 12.73; Found, C: 58.66; H: 4.65, N: 12.58.

Provenance & Evidence