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Preparation D10, Step 1: Butyryl chloride (0.68 mL, 6.5 mmol, 1 eq) was slowly dripped into a mixture of 2-amino-5-chlorobenzamide (1.10 g, 6.5 mmol, 1 eq), 1.000N NaOH (6.50 mL, 6.5 mmol, 1 eq) and THF (enough to dissolve) at 0° C. More acid chloride and base were added to drive the reaction to completion. After 4 days ethyl acetate was added followed by 1N HCl. The layers were separated and the organic layer washed with 1N HCl (2×), saturated sodium bicarbonate (1×), and brine (1×). The organic layer was dried (MgSO4) and stripped to yield 2-butyramido-5-chlorobenzamide (1.44 g) as a white powder. Mass Spec (ESI) (M+H)+=241.0.

1. customPreparation D10, Step 1
2. dissolutionto dissolve) at 0° C
3. customthe reaction to completion
4. customThe layers were separated
5. washthe organic layer washed with 1N HCl (2×), saturated sodium bicarbonate (1×), and brine (1×)
6. dry with materialThe organic layer was dried (MgSO4)