Lewis and Brønsted Acid Induced (3 + 2)-Annulation of Donor–Acceptor Cyclopropanes to Alkynes: Indene Assembly

Eduard R. Rakhmankulov, Konstantin L. Ivanov, Alexey O. Chagarovskiy, Dmitry A. Skvortsov, Gennadij V. Latyshev, Igor V. Trushkov, Mikhail Ya. Melnikov

Organic Letters · 2015 · 50 citations · 40 references

Abstract

(3 + 2)-Annulation of donor-acceptor cyclopropanes to alkynes induced by both Lewis and Brønsted acids has been developed. The reaction provides a rapid approach to functionalized indenes displaying intense visible emission (λmax = 430 nm, Φ = 0.28-0.34).

References

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