Highly regioselective ring-opening of aziridines with arenesulfinates on water: a facile access to β-amino/vinyl sulfones
摘要:
We have developed a LiBr catalyzed efficient synthesis of beta-amino sulfones from readily available aziridines and sodium sulfinates in good to excellent yields. The synthetic potential of beta-amino sulfones has also been demonstrated by their facile conversion to the corresponding vinyl sulfones. The use of water as reaction media, atom-economy and isolation of products by simple filtration in the case of solid beta-amino sulfones are certain green virtues of the synthetic protocol. (C) 2012 Elsevier Ltd. All rights reserved.
A one-pot regioselective synthetic route to vinyl sulfones from terminal epoxides in aqueous media
作者:Ruchi Chawla、Ritu Kapoor、Atul K. Singh、Lal Dhar S. Yadav
DOI:10.1039/c2gc16664j
日期:——
A highly efficient LiBr catalysed regioselective synthesis of vinyl sulfones from readily available terminal epoxides and sodium sulfinates in a one-pot procedure using water as a reaction medium is reported. The protocol is adorned with several attributes of green chemistry like recycling of the catalyst, atom-economy and an aqueous medium.
Markovnikov-Selective Radical Addition of S-Nucleophiles to Terminal Alkynes through a Photoredox Process
作者:Huamin Wang、Qingquan Lu、Chien-Wei Chiang、Yi Luo、Jiufu Zhou、Guangyu Wang、Aiwen Lei
DOI:10.1002/anie.201610000
日期:2017.1.9
Direct radical additions to terminal alkynes have been widely employed in organic synthesis, providing credible access to the anti‐Markovnikov products. Because of the Kharasch effect, regioselective control for the formation of Markovnikov products still remains a great challenge. Herein, we develop a transition‐metal‐free, visible light‐mediated radical addition of S‐nucleophiles to terminal alkynes