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Lewis and Brønsted Acid Induced (3 + 2)-Annulation of Donor–Acceptor Cyclopropanes to Alkynes: Indene Assembly
journal contribution
posted on 2015-02-20, 00:00 authored by Eduard
R. Rakhmankulov, Konstantin L. Ivanov, Ekaterina M. Budynina, Olga A. Ivanova, Alexey
O. Chagarovskiy, Dmitriy A. Skvortsov, Gennadij V. Latyshev, Igor V. Trushkov, Mikhail
Ya. Melnikov(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).