The chemistry of sulfilimines

The first use of the free selenimide Ph2SeNH as a synthon; the synthesis and X-ray crystal structure of [Ph2SeNSePh2][BPh4]

“…The key point is that reaction must proceed via the free selenimide and bromoselenimide. This conclusion is further bolstered by observations obtained when Ph 2 In conclusion, we have demonstrated that reaction of MSH with Ph 2 Se allows easy access to a selenimidium salt which can be deprotonated to the free selenimide. Although undoubtedly very sensitive (thermally as well as aerobicallynote that, as was the case with Ph 2 Se=NBr, Ph 2 Se=O and 70 Ph 2 Se also appear to form upon thermal decomposition of the free selenimide) the latter can be used as a synthon in situ, in this case via the corresponding bromoselenimide.…”

3aH-indenes and their heterocyclic analogues

“…:!-benzimidazole intermediate (Scheme 5) where the bridgehead methyl group has migrated to the 5-and 7-positions only. They could arise, as outlined in the Scheme by a simple sequence of symmetry-allowed ~N'Y-Ph [1,5] shiFts, we also propose (1,9J shiFts involving the whole oF the peripheral 1t -electron system. The 4, 7-dimethyl product could arise by one 0 ,9] Me migration only, whilst the 4,5-dimethyl isomer could most simply arise From the gem-dimethyl co~ound shown; this could be Formed by a ~ ,5] and a [1,9] shiFt to adjacent atoms, or by one D ,5) shiFt across the six membered ring.…”

“…1 They have an obvio.! :!s relationship with the sulphonium yl ides, R~-S R2, on the one hand, and with organic azides, RN-N2+, on the other.…”

Trifluoroacetic anhydride-sodium iodide reagent. Nature and applications

“…The chemistry of sulphimides is a subject of substantial interest, focused on their synthetic applications as well as pharmacological properties [43][44][45] . Less attention has been paid to the reduction of sulphimides to sulphides, although a few reagents have been used to achieve this reduction satisfactorily (Table 4).…”

“…Sulphoxides and sulphimides are important reagents and/or intermediates in organic chemistry [43][44][45]52,53 . Moreover, this group of organo-sulphur compounds also shows very interesting biological and/or pharmacological activity (Table 8) 45,54,55 .…”