An aqueous medium-controlled stereospecific oxidative iodination of alkynes: efficient access to (<i>E</i>)-diiodoalkene derivatives
作者:Rammurthy Banothu、Swamy Peraka、Srujana Kodumuri、Durgaiah Chevella、Krishna Sai Gajula、Vasu Amrutham、Divya Rohini Yennamaneni、Narender Nama
DOI:10.1039/c8nj03929a
日期:——
A new and versatile approach for the stereospecific iodination of alkynes has been developed in aqueous media. Scale-up reactions (up to 5 g) established the proficiency of this protocol and highlight the feasibility of large scale reactions.
Facile Synthesis of <i>E</i>‐Diiodoalkenes: H<sub>2</sub>O<sub>2</sub>‐Activated Reaction of Alkynes with Iodine
作者:Alexander O. Terent'ev、Dmitry A. Borisov、Igor B. Krylov、Gennady I. Nikishin
DOI:10.1080/00397910701545171
日期:2007.9.1
activate iodine in the addition reaction with triple bonds. A facile and technologically straightforward procedure was developed for the synthesis of E‐diiodoalkenes based on the reaction of alkynes with an I2–H2O2 system in THF. Selective iodination of terminal and internal alkynes containing electron‐donating and electron‐withdrawing substituents afforded 16 E‐diiodoalkenes in yields up to 89%.
Room-Temperature Carbonization of Poly(diiododiacetylene) by Reaction with Lewis Bases
作者:Liang Luo、Daniel Resch、Christopher Wilhelm、Christopher N. Young、Gary P. Halada、Richard J. Gambino、Clare P. Grey、Nancy S. Goroff
DOI:10.1021/ja2073752
日期:2011.12.7
itself. Further investigation has led to the discovery of a previously unreported transformation, the reaction of a Lewis base such as pyrrolidine with a trans-diiodoalkene to form the corresponding alkyne. The generality of this iodine elimination further suggests that reaction of PIDA with Lewisbases dehalogenates the polymer, presenting a new method to prepare carbon nanomaterials at room temperature
(NH4)2S2O8-Mediated Diiodination of Alkynes with Iodide in Water: Stereospecific Synthesis of (E)-Diiodoalkenes
作者:Can-Cheng Guo、Qing Jiang、Jing-Yu Wang
DOI:10.1055/s-0034-1379910
日期:——
A new approach to the stereospecific diiodination of alkynes under mild conditions has been developed. This protocol employs ammonium persulfate as an oxidant and iodide as an iodine source, and provides a highly efficient and general method for the preparation of a broad range of (E)-diiodoalkenes in water.
The reaction of alkynes with I2 on unactivated alumina
作者:George Hondrogiannis、Lay Choo Lee、George W. Kabalka、Richard M. Pagni