Photocatalyzed multiple additions of amines to .alpha.,.beta.-unsaturated esters and nitriles
作者:Suresh Das、J. S. Dileep Kumar、K. George Thomas、K. Shivaramayya、M. V. George
DOI:10.1021/jo00082a021
日期:1994.2
Photoelectron-transfer-catalyzed intermolecular carbon-carbon bond formation of primary, secondary, and tertiary amines with alpha,beta-unsaturated esters and nitriles using photosensitizers such as anthraquinone, acridone, and dicyanoanthracene has been investigated. The addition of alpha-aminoalkyl radicals, generated via photoelectron-transfer processes, to olefinic substrates and the subsequent 1,5-hydrogen abstraction reactions of the amine-olefin adduct radicals lead to a number of interesting multiple-olefin-added products. The adducts of the primary and secondary amines with alpha beta-unsaturated esters undergo further cyclizations to give spiro and cyclic lactams, respectively.
Das Suresh, Kumar J. S. Dileep, Thomas K. George, Shivaramayya K., George+, J. Org. Chem, 59 (1994) N 3, S 628-634
作者:Das Suresh, Kumar J. S. Dileep, Thomas K. George, Shivaramayya K., George+
DOI:——
日期:——
Photocatalytic α‐Tertiary Amine Synthesis via C−H Alkylation of Unmasked Primary Amines
作者:Alison S. H. Ryder、William B. Cunningham、George Ballantyne、Tom Mules、Anna G. Kinsella、Jacob Turner‐Dore、Catherine M. Alder、Lee J. Edwards、Blandine S. J. McKay、Matthew N. Grayson、Alexander J. Cresswell
DOI:10.1002/anie.202005294
日期:2020.8.24
transfer (HAT) catalyst, provides a directsynthesis of α‐tertiary amines, or their corresponding γ‐lactams. We anticipate that this methodology will inspire new retrosynthetic disconnections for substituted amine derivatives in organicsynthesis, and particularly for challenging α‐tertiary primaryamines.