Ethyl 5-methylisoxazole-3-carboxylate → 1-(5-Methyl-1,2-oxazol-3-yl)cyclopropane-1-carboxylic acid

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Reaction Steps

The title compound was prepared by a method analogous to the one used for Intermediate 8, but using ethyl 5-methylisoxazole-3-carboxylate as the starting material. MS (ES+) (M+H) 168.0; LCMS retention time: 2.06 minutes. (Method L). 1H NMR (500 MHz, CD3OD) δ 1.38-1.42 (m, 2H), 1.58-1.62 (m, 2H), 2.39 (s, 3H), 6.32 (s, 1H).

Provenance & Evidence