Triethylamine → n-{3-Chloro-4-[4-(2-oxo-2h-3,1-benzoxazin-1(4h)-yl)piperidin-1-yl]phenyl}-2-methylpropanamide

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Isobutyryl chloride (0.017 ml) was added to a stirred solution of the product from example 120 step (ii) (0.05 g) and triethylamine (0.07 ml) in dichloromethane (1 ml) at room temperature. After 2 h the mixture was partitioned between ethyl acetate and water, the organics separated, washed with water, dried, and evaporated under reduced pressure. Trituration with ether gave a solid, yield 0.048 g.

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