84629-38-9

Upstream product

• 4683-50-5 3-methoxycyclopent-2-enone 
• 14203-25-9 2-bromo-3-methoxy-cyclopent-2-en-1-one 
• 5980-97-2 mesitylboronic acid 
• 84629-36-7 2--2-(trimethylsilyloxy)cyclobutanon 
• 186581-53-3 diazomethane 
• 84629-37-8 2-(2,4,6-Trimethylphenyl)-1,3-cyclopentandion 

Downstream Products

• 1203554-23-7 5-[hydroxy-(tetrahydro-pyran-4-yl)-methyl]-3-methoxy-2-(2,4,6-trimethyl-phenyl)-cyclopent-2-enone 
• 1203556-28-8 4-[4-methoxy-2-oxo-3-(2,4,6-trimethyl-phenyl)-cyclopent-3-en-(E)-ylidenemethyl]-piperidine-1-carboxylic acid tert-butyl ester 

Relevant academic research and scientific papers

HERBICIDAL COMPOUNDS

The present invention relates to a compound of formula (I) wherein: wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11 and G are as defined herein; and wherein the compound of formula (I) is optionally present as an agrochemically acceptable salt thereof. These compounds are thought to be suitable for use as herbicides. The invention therefore also relates to a method of controlling weeds, especially grassy monocotyledonous weeds, in crops of useful plants, comprising applying a compound of formula (I), or a herbicidal composition comprising such a compound, to the plants or to the locus thereof.

HERBICIDALLY ACTIVE 2-(SUBSTITUTED-PHENYL)-CYCLOPENTANE-1,3-DIONE COMPOUNDS AND DERIVATIVES THEREOF

The present invention relates to a compound of formula (I): wherein: R8 and R9, independently of each other, are hydrogen, fluorine or C1-C3alkyl; R10 is hydrogen or methyl (preferably hydrogen); and the other substituents are as defined herein; and wherein the compound of formula (I) is optionally present as an agrochemically acceptable salt thereof. These compounds are thought to be suitable for use as herbicides. The invention therefore also relates to a method of controlling weeds, especially grassy monocotyledonous weeds, in crops of useful plants, comprising applying a compound of formula (I), or a herbicidal composition comprising such a compound, to the plants or to the locus thereof.

HERBICIDALLY ACTIVE 2-(SUBSTITUTED-PHENYL)-CYCLOPENTANE-1,3-DIONE COMPOUNDS AND DERIVATIVES THEREOF

The present invention relates to a compound of formula (I): wherein the substituents are as defined herein, and wherein the compound of formula (I) is optionally present as an agrochemically acceptable salt thereof. These compounds are thought to be suitable for use as herbicides. The invention therefore also relates to a method of controlling weeds, especially grassy monocotyledonous weeds, in crops of useful plants, comprising applying a compound of formula (I), or a herbicidal composition comprising such a compound, to the plants or to the locus thereof.

METHOD OF COMBATING AND CONTROLLING PESTS

The use of a compound of formula (I), wherein the substituents are as defined in claim 1, or compositions containing them in controlling insects, acarines, nematodes or molluscs.

5-HETEROCYCLYLALKYL-3-HYDROXY-2-PHENYLCYCLOPENT-2-ENONES AS HERBICIDES

Compounds of formula (I), wherein the substituents are as defined in claim 1, are suitable for use as herbicides.

NOVEL HERBICIDES

Compounds of the formula (I) wherein the substituents are as defined in claim 1, are suitable for use as herbicides.

Anisotropy Effects of Conjugated Cyclic Systems, V. 1H NMR Spectra of Mesityl Substituted Aromatic 6? Systems

1,3-Dimethyl-2-mesitylcyclopentadiene (5) has been synthesized in two routes.The 1H NMR spectrum of the cyclopentadienyl anion 3 shows a difference of chemical shift values of the p- and o-methyl groups of Δδ = 0,25 ppm.Compared with bimesityl (2b) (Δδ = 0,47 ppm) and the tropylium ion 1 (Δδ = 0,56 ppm) this is a small Δδ value.This is interpreted by the influence of the ? electron density from the five-membered anion ring on the methyl groups through space.In the range 1 to 3 there is found a linear relationship for this influence.X-ray analysis of the ferrocene derivative 18 prepared from 3 confirms the perpendicular orientation of the mesityl and cyclopentadienyl rings.