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.