Aerobic Catalytic Features in Photoredox- and Copper-Catalyzed Iodolactonization Reactions
作者:Jeewani Poornima Ariyarathna、Fan Wu、Sara Katelyn Colombo、Charleese Marisa Hillary、Wei Li
DOI:10.1021/acs.orglett.8b02771
日期:2018.10.19
evaluations and comparison of two important aerobic catalytic oxidation processes, aerobic copper catalysis and photoredox catalysis, are performed. Interesting and distinct catalytic behaviors were observed for a common reaction of iodolactonization of alkenoic acids. Namely, the aerobic copper catalysis requires the formation of a copper carboxylate, whereas the aerobic photoredox catalysis requires the addition
Guenther, Hans Juergen; Guntrum, Eberhard; Jaeger, Volker, Liebigs Annalen der Chemie, 1984, # 1, p. 15 - 30
作者:Guenther, Hans Juergen、Guntrum, Eberhard、Jaeger, Volker
DOI:——
日期:——
Sodium nitrite (NaNO2) catalysed iodo-cyclisation of alkenes and alkynes using molecular oxygen
作者:Hongjun Liu、Yuanhang Pan、Choon-Hong Tan
DOI:10.1016/j.tetlet.2008.05.013
日期:2008.7
We have developed a convenient iodo-cyclisation reaction using NaNO(2) as catalyst and molecular oxygen as the terminal oxidant. The reactive species, acetyl hypoiodite (IOAc), was generated in situ from TBAI and AcOH. The iodo-cyclisation reaction with a range of alkenes and alkynes gave good to excellent yields. Iodo-amination products can also be obtained using carbarnates prepared from commercially available allylic alcohols and alkynic alcohols. (c) 2008 Elsevier Ltd. All rights reserved.
Iodobenzene-catalysed iodolactonisation using sodium perborate monohydrate as oxidant
作者:Hongjun Liu、Choon-Hong Tan
DOI:10.1016/j.tetlet.2007.09.078
日期:2007.11
A convenient approach has been developed for iodolactonisation using iodobenzene as catalyst. The active reagent was generated in situ with tetra-n-butylammonium iodide (TBAI) and hypervalent iodine reagent, diacetoxyiodobenzene (PIDA). PIDA, in turn, was generated in situ using a catalytic amount of iodobenzene with sodium perborate monohydrate as the stoichiometric oxidant. A variety of olefinic acids including delta-pentenoic acids, delta-pentynoic acids and delta-hexynoic acid gave high yields of lactones using this methodology. (C) 2007 Elsevier Ltd. All rights reserved.