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A Diels-Alder, retro-Diels-Alder approach to arcyriaflavin-A
Tetrahedron Letters, 1999Abstract 2,2′-Bi-indolyl-3,3′-dithiete and maleimide participate in a [4 + 2] cycloaddition reaction to provide arcyriaflavin-A.
M.Manuel B. Marques +3 more
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2002
The Alder ene reaction, also known as the hydro-allyl addition, is addition of an enophile to an alkene (ene) via allylic transposition. The four-electron system including an alkene π-bond and an allylic C–H σ-bond can participate in a pericyclic reaction in which the double bond shifts and new C–H and C–C σ-bonds are formed.
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The Alder ene reaction, also known as the hydro-allyl addition, is addition of an enophile to an alkene (ene) via allylic transposition. The four-electron system including an alkene π-bond and an allylic C–H σ-bond can participate in a pericyclic reaction in which the double bond shifts and new C–H and C–C σ-bonds are formed.
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Journal für die reine und angewandte Mathematik (Crelles Journal), 2008
In 1956, \textit{H. L. Alder} [Research Problem 4, Bull. Am. Math. Soc. 62 (1956), p. 76] conjectured that the number of partitions of \(n\) into parts differing by at least \(d\) is greater than or equal to that of partitions of \(n\) into parts \(\equiv \pm 1 \pmod {d+3}\).
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In 1956, \textit{H. L. Alder} [Research Problem 4, Bull. Am. Math. Soc. 62 (1956), p. 76] conjectured that the number of partitions of \(n\) into parts differing by at least \(d\) is greater than or equal to that of partitions of \(n\) into parts \(\equiv \pm 1 \pmod {d+3}\).
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2009
The Diels–Alder reaction, inverse electronic demand Diels–Alder reaction, as well as the hetero-Diels–Alder reaction, belong to the category of [4+2]-cycloaddition reactions, which are concerted processes.
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The Diels–Alder reaction, inverse electronic demand Diels–Alder reaction, as well as the hetero-Diels–Alder reaction, belong to the category of [4+2]-cycloaddition reactions, which are concerted processes.
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2001
Si riporta un pericoloso agente di cancro dell'ontano, Phomopsis ...
MORICCA, SALVATORE, Torraca, G.
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Si riporta un pericoloso agente di cancro dell'ontano, Phomopsis ...
MORICCA, SALVATORE, Torraca, G.
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Nature, 1998
There is plenty of evidence that prehistoric peoples did not necessarily live in total harmony with their environment, but rather despoiled it in various ways. But it seems that in one instance at least steps were taken to alleviate the damage. The place was the central Peruvian Andes; the time was the early part of this millennium; and the clues are ...
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There is plenty of evidence that prehistoric peoples did not necessarily live in total harmony with their environment, but rather despoiled it in various ways. But it seems that in one instance at least steps were taken to alleviate the damage. The place was the central Peruvian Andes; the time was the early part of this millennium; and the clues are ...
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How Lewis Acids Catalyze Diels–Alder Reactions
Angewandte Chemie - International Edition, 2020Pascal Vermeeren, Trevor A Hamlin
exaly
The Diels-Alder Reaction in Total Synthesis
Angewandte Chemie - International Edition, 2002K C Nicolaou +2 more
exaly