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Reagents and conditions: (a) PdCl2(dppf), B2pin2, KOAc, dioxane, 80 °C; (b) 2-Ethoxycarbonylethyl bromide, NaH, THF, rt; (c) PdCl2(P(otol)3)2, P(otol)3, Na2CO3, Dichloromethane/water (3:2), reflux; (d) 2-chloro-N,N-dimethylethylamine hydrochloride, K2CO3, acetone, reflux.
