Synthesis and Biological Activity of <i>N</i>‐Aroyl (Aryloxyacetyl)‐<i>N</i>′‐ferrocenyl Thiourea Derivatives

Abstract

ABSTRACT In this study, the synthesis of aminoferrocene was improved and a series of novel ferrocene‐containing thiourea compounds were designed and synthesized as potential plant growth regulators. All the new compounds were characterized by IR, 1 H NMR, and X‐ray crystallography. Furthermore, the cytokinin and auxin activities of 5c and 5a–i were investigated. Notably, compounds 5e , 5g , and 5j in a concentration of 50 μg/mL exhibited significant cytokinin activity, and compounds 5b and 5h in a concentration of 50 μg/mL exhibited higher auxin activity than indoleacetic acid .