26398-84-5

Upstream product

• 26692-93-3 2-[2-(2,4,6-Trichloro-phenoxy)-ethyl]-isoindole-1,3-dione 
• 88-06-2 2,4,6-Trichlorophenol 
• 26378-23-4 1-bromo-2-(2,4,6-trichlorophenoxy)-ethane 

Relevant academic research and scientific papers

Design, synthesis, crystal structure, and herbicidal activity of novel pyrrolidine-2,4-dione derivatives incorporating an alkyl ether pharmacophore with natural tetramic acids as lead compounds

In order to discover green herbicides with novel molecular scaffolds, natural tetramic acids were used as lead compounds to design and synthesize four pyrrolidine-2,4-dione derivatives incorporating a chainlike alkoxyalkyl moiety (4a-4d) and nineteen pyrrolidine-2,4-dione derivatives incorporating a substituted phenoxyethyl moiety (10a-10s)viasubstitution, acylation, cyclization, and acidification reactions. The synthesized target compounds were confirmed by FT-IR,1H NMR,13C NMR and HRMS spectral analyses. The single-crystal structure of compound10awas analyzed by X-ray diffraction, which revealed that the 1-hydroxyethylidene group links the third position of the pyrrolidine heterocycle through a double bond with theZ-configuration. The herbicidal activity was evaluated using barnyard grass (Echinochloa crus-galli) and rape (Brassica campestris) as model plants by a Petri dish culture method. Most target compounds were found to possess moderate to good inhibitory activities against the plant growth at 100 μg mL?1. Among them, the compounds10qand10nshowed the highest herbicidal activities against the roots of barnyard grass and rape seedlings with the corresponding inhibition rates of 65.6% and 84.0%, respectively. This result indicated that pyrrolidine-2,4-dione derivatives incorporating a substituted phenoxyethyl moiety are worthy of further structural optimization.

Fungicidal (trihalophenoxy or trihalophenthio) alkylaminoalkyl pyridines and pyrroles

Compounds of the Formula: STR1 wherein X is sulfur or oxygen; R is phenyl or phenyl substituted with 1 to 3 substituents independently selected from fluoro, chloro, bromo, iodo, lower alkyl or trihalomethyl; R1 is lower alkyl or lower alkoxyalkyl; and R2 is 5- or 6-member heterocyclic ring having 1 to 3 ring nitrogens and the remainder of the ring atoms carbon atoms, optionally substituted with 1 to 2 independent lower alkyl groups, provided that a nitrogen of the 5- or 6-member heterocyclic ring is not bonded to the adjacent --CH2 -- group; or the group --CH2 --R3 wherein R3 is a 5- or 6-member heterocyclic ring having 1 to 3 ring nitrogens and the remainder of the ring atoms carbon atoms, are fungicidal.