Cyclopentylurea → Ethyl 2-(cyclopentylamino)-4-(trifluoromethyl)-5-oxazolecarboxylate

참여 물질

반응 단계

By the procedure of Example 4, 7.68 g (60 mmol) of cyclopentyl urea was reacted with 10.9 g (50 mmol) of ethyl 2-chloro-4,4,4-trifluoroacetoacetate at 140°-150° C. for 18 hours. The product was separated and then recrystallized from methylcyclohexane to yield 5.0 g of a white solid product (m.p.=41°-42° C.) identified in Table I.

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