(R)-sec-butylamine → 4-(aminocarbonyl)-2-ethyl-5-{[(1R)-1-methylpropyl]amino}benzoic acid

Participants

Reaction Steps

Synthesized according to the method of reagent preparation 50 by using (1R)-1-methylpropylamine in step 1 then following step 2 with the conversion of ethyl 2-bromo-4-cyano-5-{[(1R)-1-methylpropyl]amino}benzoate to ethyl 4-cyano-2-ethyl-5-{[(1R)-1-methylpropyl]amino}benzoate by treatment with ethylmagnesium chloride according to the method described in Synlett 1996, 5, 473-474 then proceeding through steps 3 and 4. 1H NMR (400 MHz, DMSO-d6): 7.94 (s, 1H), 7.81 (d, 1H), 7.49 (s, 1H), 7.27 (s, 1H), 6.98 (s, 1H), 2.67-2.75 (m, 2H), 1.44-1.53 (m, 2H), 1.06-1.15 (m, 6H), 0.89 (t, 3H).

Provenance & Evidence