Pentafluorosulfanyl group

We have also noticed renewed interest in the use and synthesis in agrochemicals containing the pentafluorosulfanyl group, first in the early 1990s, mostly from work done at Zeneca in the UK. In those early patents, the -CF3 group was replaced with - SF5 in known diphenyl ether herbicides and in insecticides such... 

These nitro compounds, which have a pentafluorosulfanyl group attached, exhibit increased density, decreased shock sensitivity, and good thermal stability and release considerable energy upon detonation (160). 

The pentafluorosulfanyl group has received much attention for a variety of applications. Shreeve and coworkers recently prepared 4-pentasulfanyl pyrazole... 

Both approaches described above have been used for the synthesis of indoles bearing the pentafluorosulfanyl group [36,37]. The reaction of meta- and para-nitro (pentafluorosulfanyl)benzene 25 with phenoxyacetonitrile (Scheme 15) under VNS conditions followed by hydrogenation gave rise to SFs-substituted indoles 26. At the same time, the reaction of nitro compounds 25 with chloromethyl phenyl sulfone and the subsequent reduction of the nitro group in substitution products led to amines 27 - precursors of 2-substituted indoles 28 (Scheme 15). 

Type 1 Fluor-fluor interaction between pentafluorosulfanyl groups Type 2 Pentafluorosulfanyl-carbon interaction... 

AU of them are present in the (in, in) transition state, whereas only interactions of type 3 are found in the (out,out) one (see Fig. 18.18). Thus, dispersion interactions between pentafluorosulfanyl groups and those with the carbon cycle should be the driving force of the process. Thus, torquoselectivity can also be understood in terms of secondary interactions as revealed by NCI within this approach products are... 

With BF3 and PF5, SF5NH2 forms 1 1 adducts (183). Reaction occurs at room temperature between SF5NH2 and various acid chlorides and fluorides containing electron-deficient carbonyl groups to produce iV-pentafluorosulfanyl amides, F5SNHC(0)R (R = F, CF3, CH3) (149). The reaction of SF5NCO with certain carboxylic acids at room temperature provides an alternate route for the preparation of amides, SF5-... 

The SF5 group has become a focus of much recent attention in organofluorine chemistry. Shreeve and coworkers have also used click chemistry to prepare a series of SFs-substituted 1,2,3-triazoles by reaction of pentafluorosulfanyl acetylene with hydrazoic acid and substituted azides (Fig. 3.89). °... 

Type 3 Fluor-fluor interaction between pentafluorosulfanyl and fluoro groups... 

Pentafluorosulfanyl (SF5) group is interesting as a stable moiety bearing simultaneously five fluorine atoms. In recent reviews [141,142] it was stressed that this group is now widely applied in the organic synthesis and in industry. 1,2,3-Triazoles... 

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