Multienzymatic Synthesis of γ‐Lactam Building Blocks from Unsaturated Esters and Hydroxylamine
作者:Christina Jäger、Martin Nieger、Kari Rissanen、Jan Deska
DOI:10.1002/ejoc.202300288
日期:2023.10.16
hydroxylamidation with an oxidase/peroxidase-induced ene-type cyclization. This methodology provides a mild and scalable access to N-heterocyclic buildingblocks from basic γ,δ-unsaturated esters and aqueous hydroxylamine, and its utility is illustrated by the formal total synthesis of the tetracyclic alkaloid cephalotaxine.
Aerobic C−N Bond Formation through Enzymatic Nitroso‐Ene‐Type Reactions**
作者:Christina Jäger、Mona Haase、Katja Koschorreck、Vlada B. Urlacher、Jan Deska
DOI:10.1002/anie.202213671
日期:2023.2.6
laccases participate in C−N bond-forming reactions through the generation of reactive nitroso intermediates from acylated hydroxylamines. The formal allylic C−H bond activation proceeds with air as the terminal oxidant and provides high yields both in intramolecular and intermolecular aminationreactions through this unprecedented biocatalytic nitroso-ene-type reaction pathway.
KECK, G. E.;WEBB, R. R.;YATES, J. B., TETRAHEDRON, 1981, 37, N 23, 4007-4016
作者:KECK, G. E.、WEBB, R. R.、YATES, J. B.
DOI:——
日期:——
A versatile method for carbon-nitrogen bond formation via ene reactions of acylnitroso compounds
作者:Gary E. Keck、Robert R. Webb、John B. Yates
DOI:10.1016/s0040-4020(01)93275-2
日期:——
intramolecular ene reactions have been studied. For the intermolecular examples, nitrosocarbonylmethane, thermally liberated from its Diels-Alder adduct with 9,10-dimethylanthracene, is reacted with various olefins giving the corresponding N-alkylhydroxamic acids in moderate to high yields, providing an efficient method for allylic amidation. The regiochemistry of the intermolecular reaction is observed to