(3-Chloro-2-fluorophenyl)methanamine → N-(3-chloro-2-fluorobenzyl)-2,2-diethoxyacetimidamide

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Reaction Steps

(3-Chloro-2-fluorophenyl)methanamine (1.0 g, 6.27 mmol) was added to a solution of methyl 2,2-diethoxyacetimidate (1.12 g, 6.96 mmol) in methanol (10 ml). The mixture was heated at 70 C for 1 h. The mixture was purified by chromatography (Biotage: 100% ethyl acetate) to yield N-(3-chloro-2-fluorobenzyl)-2,2-diethoxyacetimidamide (1.3 g, 4.5 mmol, 65% yield) as a colorless viscous oil. 1H NMR (500 MHz, CHLOROFORM-d) δ ppm 7.23-7.40 (m, 2H), 7.07 (t, J=7.9 Hz, 1H), 4.93 (s, 1H), 4.54 (s, 2H), 3.50-3.74 (m, 4H), 1.18-1.35 (m, 6H). MS (LC/MS) R.T.=1.78; [M+H]+=289.17.

Provenance & Evidence