1-Methylhomopiperazine → tert-butyl 5-(2-[(3-phenyl)phenyl)-7-methoxy-6-(2-(4-methyl-1,4-diazepan-1-yl)ethoxy)quinazolin-4-ylamino)-1H-indazole-1-carboxylate

Participants

Reaction Conditions

Reaction Steps

A mixture of tert-butyl 5-(6-(2-chloroethoxy)-2-[(3-phenyl)phenyl)-7-methoxyquinazolin-4-ylamino)-1H-indazole-1-carboxylate (0.25 g, 0.402 mmole), 1-methyl-1,4-diazepane (0.23 g, 0.25 mL, 2.00 mmoles) in DMSO was stirred at 85° C. for 2.5 h. The suspension was poured onto ice-water, filtered and re-dissolved in a mixture of CH2Cl2 and CH3OH and the solution was concentrated in vacuo. The residue was purified via preparative TLC (SiO2, 10% CH2Cl2/CH3OH-with 0.1% NH4OH) to give tert-butyl 5-(2-[(3-phenyl)phenyl)-7-methoxy-6-(2-(4-methyl-1,4-diazepan-1-yl)ethoxy)quinazolin-4-ylamino)-1H-indazole-1-carboxylate which taken on directly to the next step. HPLC retention time 5.96 mins.

Provenance & Evidence