Palladium-catalyzed intramolecular aminoiodination of alkenes using molecular oxygen as oxidant
作者:Lu Chen、Xianglin Luo、Yibiao Li
DOI:10.1007/s00706-016-1819-2
日期:2017.5
AbstractMolecular oxygen as oxidant to promote palladium-catalyzedintramolecular aminoiodination of alkenes has been described. The yields are excellent and show high exo-selectivities with various substrates. Graphical abstract
Regioselective (Diacetoxyiodo)benzene-Promoted Halocyclization of Unfunctionalized Olefins
作者:Gong-Qing Liu、Yue-Ming Li
DOI:10.1021/jo501739j
日期:2014.11.7
A metal-free method for intramolecular halocyclization of unfunctionalizedolefins was detailed. (Diacetoxyiodo)benzene (PIDA) was very effective for haloamidation, haloetherification, and halolactonization of unfunctionalizedolefins. In the presence of 1.1 equiv of PIDA and suitable halogen sources, a variety of unfunctionalizedolefins could be converted to the corresponding 1,2-bifunctional cyclic
MnI2-catalyzed regioselective intramolecular iodoamination of unfunctionalized olefins
作者:Hui Sun、Bin Cui、Gong-Qing Liu、Yue-Ming Li
DOI:10.1016/j.tet.2016.09.038
日期:2016.11
MnI2-catalyzed intramolecular iodoamination of unfunctionalized olefins was reported. Interaction of MnI2 with N-alkenyl amine/sulfonamide gave NRMnI which produced a CH2MnI intermediate via intramolecular aminometallation of CC double bond. Reductive elimination of CH2I from CH2MnI produced iodomethyl heterocycle with the release of Mn(0) which was confirmed by XPS and XRD experiments.
Iodoamination of Alkenyl Sulfonamides by Potassium Iodide and Hydrogen Peroxide in Aqueous Medium
作者:Sabrina Giofrè、Roberto Sala、Egle Maria Beccalli、Leonardo Lo Presti、Gianluigi Broggini
DOI:10.1002/hlca.201900088
日期:2019.7
A procedure for the iodoamination of unfunctionalized olefins tethered to a tosyl‐protected NH‐group has been developed. The combined use of KI and H2O2 in aqueous medium was effective for the preparation of iodomethyl‐substituted nitrogen‐containing heterocycles. The selective exo‐trig iodocyclization provided 1,2‐bifunctional 5‐, 6‐, and 7‐membered cyclic skeletons.
已经开发了一种方法,用于将未官能化的烯烃束缚在甲苯磺酰基保护的NH-基团上进行碘化。在水性介质中联合使用KI和H 2 O 2可以有效地制备碘甲基取代的含氮杂环。选择性的exo-trig碘环化提供了1,2-双功能的5、6和7元环状骨架。
Selective 5-exo-trig Iodocyclization of N-tosyl-2-allylanilines in Water
作者:Michalis Batistatos、Manolis A. Fousteris、Sotiris S. Nikolaropoulos、Jean Le Bras、Jacques Muzart
DOI:10.2174/157017810791824829
日期:2010.9.1
Various 2-iodomethyl-N-tosylindolines are obtained in high yields from the reaction of N-tosyl-2-allylanilines with iodine in water at 50°C.