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Reagents and conditions: (i) methyl acrylate, Pd(OAc)2 (10 mol %), P(o-tol)3 (10 mol %), DMA, 90 °C, 20 h, 33%; (ii) 5-chloro-thien-2-yl acetylene, Pd(PPh3)2Cl2 (10 mol %), CuI (10 mol %), Et3N, DMF, 80 °C,16 h, 59%.
