Tert-butyl 3-(methanesulfonyloxy)azetidine-1-carboxylate → 6-({5-[(1-ethylazetidin-3-yl)oxy]-3-fluoropyridin-2-yl}oxy)-N-(1-methyl-1H-pyrazol-3-yl)quinazoline-4-amine

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Using 4-[(1-methyl-1H-pyrazol-3-yl)amino]quinazolin-6-ol, 5-[2-(1,3-dioxolan-2-yl)ethoxy]-2,3-difluoropyridine and tert-butyl 3-[(methylsulfonyl)oxy]azetidine-1-carboxylate, and in the same manner as in Example 6-5) or according to a method similar to it or according to a combination thereof with an ordinary method, 6-({5-[(1-ethylazetidin-3-yl)oxy]-3-fluoropyridin-2-yl}oxy)-N-(1-methyl-1H-pyrazol-3-yl)quinazoline-4-amine was obtained.

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