A simple and effective procedure for conversion of primary, secondary, allylic and benzylic alcohols into the corresponding iodides is described using NaI/Amberlyst 15 in acetonitrile at room temperature. Selective conversion of benzylic alcohols in the presence of saturated alcohols into the corresponding benzylic iodides is achieved under these conditions.
Regioselective transformation of allylic, benzylic and tertiary alcohols into the corresponding iodides wrih aluminium triiodide: deoxygenation of vicinal diols
作者:Parijat Sarmah、Nabin C Barua
DOI:10.1016/s0040-4020(01)81035-8
日期:1989.1
Aluminium triiodide regioselectively converts allylic, benzylic and tertiary alcohols Into the corresponding iodides in excellent yields. It also deoxygenates cis and trans secondary-tertiary and allylic bis—secondary vicinal diols in good yields.
treatment of tertiary and secondary allylicalcohols containing a terminal double bond, and their acetyl derivatives, with triphenylphosphine and iodine under mild conditions leads regiospecifically and in high stereoselectivity to the corresponding primary allylic iodides, which can react ‘in situ’ with diverse nucleophiles. Primary allylicalcohols and benzyl alcohols and acetates are also transformed
Abstract A variety of allylic, benzylic, primary, and secondary saturated alcohols have been converted into the corresponding iodides using NaI supported on KSF clay. Selective conversion of allylic and benzylic alcohols in the presence of primary and secondary saturated alcohols has also been demonstrated.
摘要 使用负载在 KSF 粘土上的 NaI 已将各种烯丙基、苄基、伯和仲饱和醇转化为相应的碘化物。在伯和仲饱和醇存在下烯丙醇和苄醇的选择性转化也已得到证实。
Copper-catalyzed [1,2]-rearrangements of allylic iodides and aryl α-diazoacetates
作者:Bin Xu、Jackson A. Gartman、Uttam K. Tambar
DOI:10.1016/j.tet.2017.01.048
日期:2017.7
iodonium ylides are synthetically useful reactions for the generation of functionalized α-iodoesters. Allylic iodides are coupled with α-diazoesters in the presence of a copper catalyst and a ligand to generate iodonium ylides, which undergo metal-mediated rearrangements. By fine-tuning the structure of the ligand, we have reversed the regioselectivity of copper-catalyzed reactions of iodonium ylides from