Converting (<i>E</i>)-(Hetero)arylethanesulfonyl Fluorides to (<i>Z</i>)-(Hetero)arylethanesulfonyl Fluorides Under Light Irradiation
作者:Yu-Mei Huang、Shi-Meng Wang、Jing Leng、Balakrishna Moku、Chuang Zhao、Njud S. Alharbi、Hua-Li Qin
DOI:10.1002/ejoc.201900799
日期:2019.7.31
construction of (Z)‐(hetero)aryl ethenesulfonyl fluorides was achieved utilizing Iridium photoredox catalysis under UV‐lightirradiation. This protocol provided a diverse range of (Z)‐(hetero) arylethenesulfonyl fluorides in moderate to good yields under mild conditions without external additives. The late‐stage transformation of the (Z)‐(hetero)arylethenesulfonyl fluorides comparing with their E‐configuration
Synthesis of a Class of Fused δ-Sultone Heterocycles<i>via</i>DBU-Catalyzed Direct Annulative SuFEx Click of Ethenesulfonyl Fluorides and Pyrazolones or 1,3-Dicarbonyl Compounds
作者:Xing Chen、Gao-Feng Zha、Grant A. L. Bare、Jing Leng、Shi-Meng Wang、Hua-Li Qin
DOI:10.1002/adsc.201700887
日期:2017.9.18
(E)‐2‐(hetero)arylethenesulfonyl fluorides and (E,E)‐1,3‐dienylsulfonyl fluorides are bis‐electrophiles and rare members of the sulfonyl fluoride family with limited information being known of their reactivity and synthetic utility. The direct annulation reaction of these 2‐substituted ethenesulfonyl fluorides with medicinally important enolizable pyrazolones and 1,3‐dicarbonyl compounds utilizing catalytic DBU
A green and efficient method for the synthesis of β-sulfonyl aliphatic sulfonyl fluorides was developed. This reaction works in aqueousmedia under mild and environmentally benign conditions without any ligand or additive. The efficiency of this method is demonstrated by isolating the desired products obtained through simple filtration.