The first palladium -catalyzed coupling reactions of 1,3,5-triphenyl pyrazoline are reported.The Suzuki-Miyaura reaction of 3-(4-bromophenyl)-1,5-diphenyl pyrazoline with one equivalent of arylboronic acids afforded 3-(biphenyl)-1,5-diphenyl pyrazoline in 53-78 % yield.While the Suzuki-Miyaura reactions of 3,5-bis(4bromophenyl)-1-phenyl pyrazoline with two equivalent of arylboronic acids gave 3,5-...