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Unusual Structure-Energy Correlations in Intramolecular Diels–Alder Reaction Transition States [PDF]

open access: yesMolecules, 2014
Detailed analysis of calculated data from an experimental/computational study of intramolecular furan Diels–Alder reactions has led to the unusual discovery that the mean contraction of the newly forming C-C σ-bonds from the transition state to the ...
Justyna M. Żurek   +3 more
doaj   +3 more sources

C(alkyl)–C(vinyl) bond cleavage enabled by Retro-Pallada-Diels-Alder reaction [PDF]

open access: yesNature Communications, 2023
Activation and cleavage of carbon–carbon (C–C) bonds is a fundamental transformation in organic chemistry while inert C–C bonds cleavage remains a long-standing challenge.
Qingyang Zhao   +6 more
doaj   +2 more sources

A Simple Entry to the 5,8-Disubstituted Indolizidine Skeleton via Hetero Diels-Alder Reaction [PDF]

open access: yesMolecules, 2023
The 5,8-disubstituted indolizidines are the largest family of indolizidines isolated from the skin of amphibians. These compounds exhibit interesting biological activities such as noncompetitive blockers of nicotinic receptors.
Juan Francisco Rodríguez-Caro   +2 more
doaj   +2 more sources

New tandem Ugi/intramolecular Diels–Alder reaction based on vinylfuran and 1,3-butadienylfuran derivatives [PDF]

open access: yesBeilstein Journal of Organic Chemistry
A new tandem sequence involving the Ugi reaction and Diels–Alder [4 + 2] cycloaddition based on vinylfuran and 1,3-butadienylfuran derivatives was designed and studied.
Yuriy I. Horak   +5 more
doaj   +2 more sources

Thermally Induced Intramolecular Diels–Alder Reaction of Furan-Tethered Methylenecyclopropanes [PDF]

open access: yesMolecules
The substantial ring strain and activated double bonds render methylenecyclopropanes (MCPs) potential substrates for Diels–Alder (DA) reactions. In this work, we present a thermally induced intramolecular Diels–Alder (IMDA) reaction utilizing furan ...
Qi-Yun Huang   +3 more
doaj   +2 more sources

Progress in Lewis-Acid-Templated Diels–Alder Reactions [PDF]

open access: goldMolecules
The synthesis of natural products with complicated architectures often requires the use of segments with functional groups that can be structurally transformed with the desired stereogenic centers.
Jun Ishihara
doaj   +2 more sources

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