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N, N, N, N-tetra propargyl-5-amino-2-(p-aminophenyl) benzoxazole (TPAPB), a novel highly thermal stability propargyl functional compound containing benzoxazole ring, was proposed and synthesized using phase-transfer catalytic method.DSC, TG, FT-IR, and 1H-NMR spectra were used to characterized TPAPB.