Thiomorpholine → 7-Ethylamino-6-nitro-4-(5-thiomorpholinopentylamino)quinazoline

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Reaction Steps

Thiomorpholine (6 ml, 59.7 mmol) was added to a dimethylformamide solution (30 ml) of 4-(5-chloropentylamino)-7-ethylamino-6-nitroquinazoline (2.50 g, 7.41 mmol) obtained in Reference Example 66 and the mixture was heated under reflux for 3 hours. After the solvent was distilled off, the residue was purified by silica gel column chromatography (chloroform:methanol=30:1) to give the title compound (2.95 g, 98.7%).

Provenance & Evidence