2015. 56, 2 UDC 541.6:548.737 CRYSTAL STRUCTURE OF N-PIVALOYL-N-PHENYLPIVALOHYDRAZIDE A. Saeed1, I. Arshad1, U. Flцrke2 1Department of Chemistry, Quaid-I-Azam University, Islamabad, Pakistan 2Department of Inorganic and Analytical Chemistry, Universitдt Paderborn, Paderborn, Germany E-mail: Ifzan_ifzan@yahoo.com Received June, 24, 2013 Revised — December, 7, 2013 A novel hydrazide compound (C16H24N2O2) is synthesized in a single step by the reaction of pivaloyl chloride with phenylhydrazine in a 2:1 molar ratio in dry DCM. <...> The molecular structure is determined by the single crystal X-ray analysis. <...> The diacylhydrazine derivatives are a promising class of chemically and mechanistically novel insect control agents that were serendipitously discovered at Rohm and Haas Company [ 1 ]. <...> The diacylhydrazine insecticide family shows efficacy against lepidopteran larvae in the field and laboratory [ 2 ]. <...> Tebufenozide and its methoxylated derivative methoxyfenozide presents intrepid as agonist or mimic insect molting hormone 20-hydroxyecdynose by inducing premature, incomplete ecdysis resulting in death of the exposed insects [ 3—7 ]. <...> Halofenozide and chromafenozide are novel members of the diacylhydrazine insecticide belonging to the class of non-steroidal ecdysone agonists. <...> Tebufenozide and its analogue methoxyfenozide, halofenozide, and chromafenozide have been used extensively in crops such as apple, grape, and cruciferous vegetables in order to obtain good yields in different countries [ 8—10]. <...> Thus, it becomes important to determine these insecticides in crop to ensure food safety. <...> With extensive industrial applications and pharmacological importance, we herein report an efficient one-pot synthesis and the crystal structure of N-pivaloyl-N-phenylpivalohydrazide (1) obtained by the efficient method from acid chlorides in dichloromethane as a solvent in a short time with high yield. <...> N-pivaloyl-N-phenylpivalohydrazide (1) was synthesized as follows: to the magnetically stirred solution of phenyl hydrazine (3 mmol) a solution of pivaloyl chloride (6 mmol) in 10 ml of dichloromethane was added dropwise. <...> The mixture solution was heated under reflux for about 1 h. <...> The resulting solution was allowed to cool at room temperature. <...> H atoms are shown as spheres of arbitrary radii was evaporated in ambient environment. <...> Two days later, white crystals suitable for X-ray analysis were collected, and washed with a small amount <...>