A highly efficient and generally applicable iodine-catalyzed reaction of arylacetylenic acids and arylacetylenes with sodiumsulfinates for the synthesis of arylacetylenic sulfones was developed. The methodology has the advantages of a metal-free strategy, easy to handle reagents, functional group tolerance, a wide range of arylacetylenic acids and arylacetylenes, and easy access to arylacetylenic
Aerobic copper-catalyzed synthesis of (E)-alkenyl sulfones and (E)-β-halo-alkenyl sulfones via addition of sodium sulfinates to alkynes
作者:Nobukazu Taniguchi
DOI:10.1016/j.tet.2014.01.071
日期:2014.3
(E)-alkenyl sulfones. When a CuCl catalyst was employed, the hydrosulfonylation proceeded syn-selectively, and (E)-alkenyl sulfones were synthesized in excellent yields. In contrast, the reaction using CuI catalyst produced (E)-β-haloalkenyl sulfones anti-selectively in the presence of potassium halides. Furthermore, the (E)-β-bromoalkenyl sulfones are possible to convert into various alkenyl sulfones by Suzuki–Miyaura
Introduction of N,N'-disulfonylhydrazines as new sulfonylating reagents for highly efficient synthesis of (E)-β-iodovinyl arenesulfones under mild conditions
作者:Dongping Luo、Lin Min、Weiping Zheng、Lidong Shan、Xinyan Wang、Yuefei Hu
DOI:10.1016/j.cclet.2019.12.040
日期:2020.7
self-dimerization synthesis of disulfones controlled by the “solvent-cage-effects”. In this article, N,N′-disulfonylhydrazines were introduced as new sulfonylating reagents and their combinations with NIS were disclosed as new iodosulfonylating reagents of alkynes. Finally, a highly efficient method for the synthesis of (E)-β-iodovinyl arenesulfones was developed by mixing an alkyne, a N,N′-disulfonyl-hydrazine
Solvent Controlled Transformation between Sulfonyl Hydrazides and Alkynes: Divergent Synthesis of Benzo[
<i>b</i>
]thiophene‐1,1‐dioxides and (E)‐β‐iodo Vinylsulfones
作者:Yue Ma、Kun Wang、Dong Zhang、Peng Sun
DOI:10.1002/adsc.201801258
日期:2019.2
green, efficient and controllable transformation between sulfonyl hydrazides and alkynes leading to benzo[b]thiophene‐1,1‐dioxides and (E)‐β‐iodo vinylsulfones via radical pathway has been developed. The reaction occurs rapidly in the presence of simply H2O2 and KI without the help of any transition metal. The chemoselectivity of the reaction is determined by the solvent in which the process is performed:
已开发出一种绿色,高效且可控制的磺酰肼与炔烃之间通过自由基途径转化为苯并[ b ]噻吩-1,1-二氧化物和(E)-β-碘乙烯基砜的方法。在仅存在H 2 O 2和KI的情况下,无需任何过渡金属的帮助,该反应即可迅速发生。反应的化学选择性取决于在其中进行处理的溶剂:TFE有利于环状产物,而H 2 O介质生成碘磺酰化产物。值得注意的是,该协议也是一步一步从易得的磺酰肼和炔烃中产生聚集诱导的发射(AIE)活性苯并[ b ]噻吩-1,1-二氧化物的第一种直接方法。
Visible-light-induced surfactant-promoted sulfonylation of alkenes and alkynes with sulfonyl chloride by the formation of an EDA-complex with NaI in water at room temperature
scope, good functional group tolerance, simple operation, scalability and high chemical selectivity. Thus, it not only provided a green and efficient synthetic strategy for the preparation of β-iodo-substituted sulfone derivatives, but also enriched the investigation of visible-light-induced reactions in water.