Regioselectivity of fluoride ion‐induced intramolecular nucleophilic cyclization of heptafluoronaphthyl sulfur diimides 2Nf<sub>F</sub>NSNSiMe<sub>3</sub> and 2Nf<sub>F</sub>SNSNS1Me<sub>3</sub>

Irina Yu. Bagryanskaya, Yu. V. Gatilov, Alexey O. Miller, Andrey V. Zibarev

Heteroatom Chemistry · 1994 · 31 citations · 9 references

Concepts

Abstract

Abstract The title reaction is highly regioselective, leading in both cases to 4,5,6,7,8,9‐hexafluoronaphtho[1,2‐c]‐[1,2,5]thiadiazole (whose struture is confirmed by X‐ray structure analysis) and 4,5,6,7,8,9‐hexafluoronaphtho[2,3‐c][1,2,5]thiadiazole in ∼94 : 6 ratio. The preferred direction of cyclization is consistent with final product thermodynamics as well as factors of kinetic control for orbital‐controlled reactions (calculated by use of frontier MOs theory).

References

9