The green synthesis of benzyl salicylate was investigated using a dual-site phase transfer catalyst and an ionic liquid in a triliquid system. The dual-site phase-transfer catalyst 4,4'-bis(tripropylammonium methyl)-1,1'-biphenyl dichloride (BTPAMBC) synthesized from 4,4'-bis(chloromethyl)-1,1'-biphenyl and tripropylamine was used to form the third-liquid phase for catalysis, and the ionic liquid tributyl(tetradecyl)phosphonium methanesulfonate (TBTDPMS) was used to enhance the reaction rate. The yield of the product was only 0.1% without using a catalyst and an ionic liquid in a liquid-liquid system and increased to 31% using BTPAMBC in a triliquid system. The yield of the product greatly increased to 94% with BTPAMBC and TBTDPMS at a short reaction time of 15 min. The apparent rate constant (pseudo-first-order) at 60 degrees C using BTPAMBC and TBTDPMS (0.177 min(-1)) was much larger than that using BTPAMBC alone (0.0231 min(-1)), demonstrating significant enhancement by TBTDPMS in the BTPAMBC-catalyzed system. An efficient and environmentally benign method for synthesizing esters was developed.