Facile and innovative catalytic protocol for intramolecular Friedel–Crafts cyclization of Morita–Baylis–Hillman adducts: Synergistic combination of chiral (salen)chromium(III)/BF3·OEt2 catalysis
Karthikeyan Soundararajan, Helen Ratna Monica Jeyarajan, Raju Subimol Kamarajapurathu and 1 more
Beilstein Journal of Organic Chemistry · 2021
doi:10.3762/bjoc.17.140 (opens in a new tab)
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Abstract
The chiral (salen)Cr(III)/BF3·OEt2 catalytic combination was found to be an effective catalyst for intramolecular Friedel–Crafts cyclization of electron-deficient Morita–Baylis–Hillman adducts. In presence of mild reaction conditions the chiral (salen)Cr(III)/BF3·OEt2 complex affords 2-substituted-1H-indenes from unique substrates of Morita–Baylis–Hillman adducts via an easy operating practical procedure.
Abstract licence: CC BY
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