Catalytic and enantioselective oxa-Piancatelli reaction using a chiral vanadium complex.
Sign Up to like & getrecommendations! Published in 2020 at "Chemical communications"
DOI: 10.1039/d0cc02621b
Abstract: An enantioselective oxa-Piancatelli reaction was established for the first time using a chiral vanadium(v) catalyst. The dual Brønsted and Lewis acid properties of the vanadium catalyst afforded 4-hydroxycyclopent-2-enone derivatives in up to 90% yields and… read more here.
Keywords: piancatelli reaction; oxa piancatelli; chiral vanadium; enantioselective oxa ... See more keywords
Asymmetric binary-acid catalysis: a diastereo- and enantioselective oxa-Nazarov cyclization-Michael addition of conjugated 1,2-diketones
Sign Up to like & getrecommendations! Published in 2023 at "Organic Chemistry Frontiers"
DOI: 10.1039/d3qo00558e
Abstract: Diastereo- and enantioselective oxa-Nazarov cyclization-Michael addition of conjugated 1,2-diketones was achieved by using an asymmetric binary-acid catalysis with chiral phosphoric acid and FeBr3. The reaction affords the corresponding chiral 3(2H)-furanones... read more here.
Keywords: nazarov cyclization; enantioselective oxa; diastereo enantioselective; oxa nazarov ... See more keywords