Cu‐Promoted Sydnone Cycloadditions of Alkynes: Scope and Mechanism Studies
作者:Júlia Comas‐Barceló、Robert S. Foster、Béla Fiser、Enrique Gomez‐Bengoa、Joseph P. A. Harrity
DOI:10.1002/chem.201406118
日期:2015.2.16
reaction of sydnones and terminal alkynes, providing significant reduction in reaction times. Specifically, the use of Cu(OTf)2 is found to provide 1,3‐disubstituted pyrazoles, whereas simply switching the promoter system to Cu(OAc)2 allows the corresponding 1,4‐isomers to be produced. The mechanism of the Cu‐effect in each case has been investigated by experimental and theoretical studies, and they
METHOD FOR PRODUCING PYRAZOLES, NOVEL PYRAZOLES AND APPLICATIONS THEREOF
申请人:COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
公开号:US20150368295A1
公开(公告)日:2015-12-24
A method for preparing a pyrazole of formula (I) in which R,R′ and R″ have different meanings, characterised in that it involves reacting a sydnone of formula (II) in which R and R′ have the meanings already indicated, with an alkyne of formula (III) in which R″ has the meaning already indicated, in the presence of copper, to obtain a pyrazole compound of formula (I) that is then isolated and salified if desired.
N-,C-DISUBSTITUTED AZOLES AND COMPOSITIONS AND METHODS FOR CONTROLLING NEMATODE PESTS
申请人:Monsanto Technology LLC
公开号:US20160007605A1
公开(公告)日:2016-01-14
Provided herein are new N-, C-disubstituted azoles and derivatives thereof that exhibit nematicidal activity and are useful, for example, in methods for the control of unwanted nematodes.
N-,C-disubstituted azoles and compositions and methods for controlling nematode pests
申请人:Monsanto Technology LLC
公开号:US10398144B2
公开(公告)日:2019-09-03
Provided herein are new N-,C-disubstituted azoles and derivatives thereof that exhibit nematicidal activity and are useful, for example, in methods for the control of unwanted nematodes.