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methodology, including the artificial design of biological Diels - Alder catalysts, has long been the focus of extensive efforts. There are few known enzymes in nature that perform [4 + 2] cycloadditions ...
, the tryptamine derivative 33 and propynal underwent an endo-selective Diels - Alder reaction , followed by a methyl selenide-triggered β-elimination, to give a transient intermediate 35. The author proposed ...
had been suggested [92] to rely on three thermally-allowed processes, namely an 8π electrocyclization, a 6π electrocyclization, and a 6π[4+2] cycloaddition ( Diels − Alder reaction ). We reasoned ...
. A predesigned COF scaffold (DaTp) was subjected to a [4π + 2π] Diels - Alder cycloaddition reaction with N-hexylmaleimide molecules, leading to the disturbance of π–π stacking interactions and planarity ...
to generate classes of reactive intermediates whose general reactivity patterns are well understood, inspiring the design of a wide range of new chemical reactions . The increasing demands for environmentally ...
phosphorylation DNAzyme Zn2+ + Mg2+ 125 Phosphoserine lyase activity DNAzyme Zn2+ + Mn2+ + Mg2+ 126 Diels – Alder cycloaddition Ribozyme Eight Mg2+ 127 Reaction . Type of NAEs . Metal requirement (name of the NAE ...
atoms rules out plausible epoxy-olefin cyclization mechanisms, suggesting that the characteristic octalin ring system is generated by an intramolecular Diels – Alder reaction [11]. The presence of pyrrole ...
is that NSF, as well as other funding sources and professionals worldwide, are embracing the tremendous value, benefit, and responsibility of the scientific community to facilitate the utilization ...
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