Catalyst-Controlled Inter- and Intramolecular Cascade [4 + 2] Annulations via Benzopyrylium Intermediates
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https://figshare.com/articles/dataset/Catalyst-Controlled_Inter-_and_Intramolecular_Cascade_4_2_Annulations_via_Benzopyrylium_Intermediates/21511508
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资源简介：
We report two types of catalyst-controlled inter- and
intramolecular
cascade [4 + 2] annulations between diyne-carbonyls and alkenes, Pt(II)-catalyzed
annulation with two alkenes via two benzopyrylium intermediates, and
Au(I)-catalyzed annulation with one alkene via benzopyrylium and quinodimethane
intermediates. Additionally, Au(I)-catalyzed reactions of highly nucleophilic
indole-yne-carbonyls with one alkene afford cascade [4 + 2] annulation
products in high yields through benzopyrylium and not quinodimethane
but carbocation intermediates, the contribution of which is supported
by DFT calculations.
创建时间：
2022-11-07
