Related Experiment Video
Updated: Jun 22, 2026

Infection of In Vivo and In Vitro Pines with the Pinewood Nematode Bursaphelenchus xylophilus and Isolation of Induced Volatiles
Published on: September 27, 2024
Synthesis and insect attractant activity of fluorine-containing Pinus diterpenic amides and imines
Xiaoping Rao1, Zhanqian Song, Zhaojiu Han
1Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Nanjing, PR China. rxping2001@163.com
Abstract:
A series of fluorine-containing Pinus diterpenic amides and imines have been synthesised and their structures were confirmed by elemental analysis, IR, (1)H NMR spectroscopy and single crystal X-ray diffraction. Their insect attractant activity to Spodoptera litura were screened by leaf plate method; the results indicated that most fluorine-containing dehydroabietic amides and imines exhibited attractive activity to S. litura, in which dehydroabietic p-trifluoromethyl amide (A6) exhibit seven times the attractive rate compared with blank at the concentration of 0.01 g mL(-1). The fluorine moiety fused to the benzene ring results in decreased attractive rates for amides except (A6), while the effects of fluorine result in increased attractive rates for diterpenic imines.
Related Concept Videos
Preparation of Amides
The DCC-promoted synthesis of amides begins with the protonation of DCC by carboxylic acid. The protonation makes it a better acceptor. Next, the addition of carboxylate to the protonated carbodiimide gives a reactive acylating agent.
Subsequently, the amine acts as a nucleophile that attacks the acylating agent to form a tetrahedral intermediate. In the...
Electrophilic Aromatic Substitution: Fluorination and Iodination of Benzene
Diazonium Group Substitution with Halogens and Cyanide: Sandmeyer and Schiemann Reactions
Aldehydes and Ketones with Amines: Imine and Enamine Formation Overview
Physical Properties of Amines
Preparation of 1° Amines: Gabriel Synthesis
Strong bases like NaOH or KOH deprotonate the phthalimide to form the corresponding anion, which acts as a nucleophile. Further, the anion attacks an...
