arylation reaction using α-aryl isopropenyl-tert-cyclobutanols has been developed. This reaction gives access to benzodiquinanes in moderate to good yields and tolerates alkyl-, alkoxy-, and halogen-substitutedaryl groups.
important building blocks for the synthesis of biologically active molecules and can easily be accessed via Beckmannrearrangement of cyclobutanones. However, Beckmann fragmentation is often a competing reaction for these strained ketones. We found that performing the Beckmannrearrangement with Tamura’s reagent in the presence of aqueous HCl suppresses the undesired fragmentation reaction. This improved
[EN] 4-MEMBERED RING CARBOXAMIDES USED AS NEMATICIDES<br/>[FR] CARBOXAMIDES PRÉSENTANT DES CYCLES À 4 CHAÎNONS UTILISÉS COMME NÉMATICIDES
申请人:SYNGENTA PARTICIPATIONS AG
公开号:WO2015003951A1
公开(公告)日:2015-01-15
Compounds of the formula (I), in which the substituents are as defined in claim 1, are suitable for use as nematicides.
式(I)中的化合物,其中取代基如权利要求1中定义的那样,适用于作为线虫杀虫剂。
Multiple Rhodium-Catalyzed Cleavages of Single C–C bonds
作者:Christophe Aïssa、Damien Crépin、Daniel J. Tetlow、Kelvin Y. T. Ho
DOI:10.1021/ol400266g
日期:2013.3.15
The Rh(I)-catalyzed intramolecularhydroacylation of cis and trans asymmetrically substituted alkylidenecyclobutanes proceeds according to three mechanistic pathways. As shown by deuterium-labeling experiments, the mechanism accounting for the rearrangement of the cis isomers includes the cleavage of three carbon–carbon bonds and a remarkable transannular 3-exo-trig carbometalation.
NEMATICIDAL N-(PHENYLCYCLOALKYL)CARBOXAMIDES AND N-(PHENYLCYCLOALKYL)THIOCARBOXAMIDES
申请人:BAYER CROPSCIENCE AKTIENGESELLSCHAFT
公开号:US20160075653A1
公开(公告)日:2016-03-17
The present invention relates to the use of N-(Phenylcycloalkyl)carboxamides and N-(Phenylcycloalkyl)thiocarboxamides for the control of nematodes in agriculture and as anthelmintic agents against endoparasites in animals and humans, compositions containing such compounds and methods for the control of nematodes and helminths and furthermore to novel N-(Phenylcycloalkyl)carboxamides and N-(Phenylcycloalkyl)thiocarboxamides, processes and intermediate compounds for their preparation, their use as nematicides, compositions containing such compounds and methods for the control of nematodes.