The phase transfer catalyst 1-benzyl-1,4-diazoniabicyclo[2.2.1]hepta-2,4(7)-dienedichloride (BDHDC) in organic chiral synthesis was used in this study. Kinetic parameters such as ultrasonication effect, phase transfer catalyst dose, solvents, butyl chloride volume, stirring speed and weight of KOH were examined for the phase transfer catalytic reactions. The reaction between phenyl acetonitrile and butyl chloride was carried out under basic conditions and ultrasonic irradiation (300 W, 40 kHz) using BDHDC as a phase transfer catalyst. The introduction of BDHDC catalyst significantly improved the overall reaction, resulting in a high yield of the chiral combination. The product formation has been optimized by modifying the kinetic parameters. © 2024 Elsevier B.V., All rights reserved.