[EN] PROCESS FOR PREPARATION OF CYCLOPENTENE COMPOUNDS<br/>[FR] PROCÉDÉ DE PRÉPARATION DE COMPOSÉS CYCLOPENTÈNE
申请人:BASF SE
公开号:WO2017016883A1
公开(公告)日:2017-02-02
The present invention relates to a process for preparing cyclopentene compounds of formula (I) wherein the variables have the meaning as defined in the description, by cyclisation under basic conditions of a ketone of formula (II) which is obtained by reaction of a compound of formula (III) with a compound of formula (IV), novel compounds of formula (I), methods and use of these compounds and combinations for combating invertebrate pests such as insects, arachnids or nematodes in and on plants, and for protecting such plants being infested with pests, and for protecting plant propagation material as like seeds.
[EN] AROMATIC SULFINATES AND SULFONYL HALIDES, AND THE PREPARATION THEREOF<br/>[FR] SULFINATES ET HALOGENURES DE SULFONYLE AROMATIQUES, ET LEUR PREPARATION.
申请人:INST NAT POLYTECH GRENOBLE
公开号:WO2008009816A2
公开(公告)日:2008-01-24
[EN] The invention relates to aromatic sulfinates and sulfonyl halides, and to the preparation thereof. The halides and the sulfinates are respectively of formulae Ar-Z- (CF2) n-CFRf-SO2Y (I) and [Ar-Z- (CF2) n-CFRf-SO2] m M wherein Z is a sulfide, sulfinyl or sulfonyl group; n is 0 or 1; Rf is F or a perfluoroalkyl group; Ar is an aromatic grouping; Y is Cl, Br or F; M is H, an alkaline metal, an alkaline-earth metal cation, a trivalent or tetravalent metal cation, or an organic cation. The sulfinates can be used for the preparation of sulfonyl halides which can be used for producing sulfonates and sulfonylimidides as salts for an electrolyte. [FR] L'invention concerne des suif inates et des halogénures de sulfonyle aromatiques, et leur préparation. Les halogénures et les sulfinates répondent respective¬ ment aux formules Ar-Z- (CF2) n-CFRf-SO2Y (I) et [Ar-Z- (CF2) n-CFRf-SO2] m M dans lesquelles Z représente un groupe sulfure, sulfinyle, sulfonyle; n est 0 ou 1; Rf représente F ou groupe perf luoroalkyle; Ar représente un groupement aromatique; Y représente Cl, Br ou F; M représente H, un cation de métal alcalin, un cation de métal alcalino-terreux, un cation de métal trivalent ou tétravalent, ou un cation organique. Les sulfinates sont utiles pour la préparation des halogénures de sulfonyle, qui sont utiles pour l'élaboration de sulfonates et de suif onylimidures utiles comme sels pour un électrolyte.
Access to Aryl and Heteroaryl Trifluoromethyl Ketones from Aryl Bromides and Fluorosulfates with Stoichiometric CO
作者:Martin B. Johansen、Oliver R. Gedde、Thea S. Mayer、Troels Skrydstrup
DOI:10.1021/acs.orglett.0c01117
日期:2020.6.5
trifluoromethyl ketones starting from readily accessible aryl bromides and fluorosulfates, the latter easily prepared from the corresponding phenols. The methodology utilizes low pressure carbon monoxide generated ex situ from COgen to generate Weinreb amides as reactive intermediates that undergo monotrifluoromethylation affording the corresponding aromatic trifluoromethyl ketones (TFMKs) in good
Enantioselective rhodium-catalysed insertion of trifluorodiazoethanes into tin hydrides
作者:Stephen Hyde、Janis Veliks、David M.H. Ascough、Robert Szpera、Robert S. Paton、Véronique Gouverneur
DOI:10.1016/j.tet.2018.11.022
日期:2019.1
insertion reactions with tinhydrides affording the corresponding α-(trifluoromethyl)benzyl stannanes. This reactivity contrasts with that of diazo esters which predominantly afford CH2 reduction products in the presence of tinhydrides. The first example of asymmetric insertion into tinhydrides using diazo compounds is also described. In addition, this system extends to asymmetric germanium hydride and