Catalytic Arylalkylation of Alkenyl Amines at Remote Sites via Directed Nickel Catalysis
作者:Jian Han、Yinheng Tang、Jie Huang、Chun Luo、Lanlan Zhang、Wenyi Li、Chao Wang
DOI:10.1002/cjoc.202200647
日期:2023.3.15
due to the preference for formation of kinetically stable five-membered metallacycles. Herein, we have disclosed a complementary strategy to accomplish a nickel-catalyzed remote arylalkylation of alkenyl amines with excellent regioselectivity and diastereofidelity, involving rare six- or seven-membered metallacycles. This general protocol is compatible with a series of δ- and ε-alkenyl amines, providing
Intramolecular diamination and alkoxyamination of alkenes with N-sulfonyl ureas employing N-iodosuccinimide
作者:Hao Li、Ross A. Widenhoefer
DOI:10.1016/j.tet.2010.03.082
日期:2010.6
Reaction of N-delta-alkenyl-N'-sulfonyl urea 1 with N-iodosuccinimde (NIS; 2 equiv) and a catalytic amount of AgOTf (20 mol %) at room temperature led to intramolecular alkoxyamination to form bicyclic isourea 2a in 95% isolated yield. In comparison, reaction of 1 with NIS and sodium bicarbonate (1 equiv) at room temperature led to isolation of bicyclic imidazolidin-2-one 2b in 91% yield. These NIS-mediated alkoxyamination and diamination protocols were effective for a range of N-delta-alkenyl-N'-sulfonyl ureas to form the corresponding heterobicyclic compounds in good yield with high chemoselectivity and good to excellent diastereoselectivity. (C) 2010 Published by Elsevier Ltd.
Cottin,H., Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences, 1962, vol. 255, p. 1302 - 1304
作者:Cottin,H.
DOI:——
日期:——
TERAO KEIJI; TOSHIMITSU AKIO; UEMURA SAKAE, J. CHEM. SOC. PERKIN TRANS.,(1986) N 10, 1837-1843
作者:TERAO KEIJI、 TOSHIMITSU AKIO、 UEMURA SAKAE
DOI:——
日期:——
Intramolecular amidoselenation of N-alkenyl amides: formation of nitrogen heterocycles