One-pot fluorosulfurylation of Grignard reagents using sulfuryl fluoride
作者:Cayo Lee、Nicholas D. Ball、Glenn M. Sammis
DOI:10.1039/c9cc08487h
日期:——
Herein, we report a new method for the one-pot syntheses of sulfonyl fluorides. Addition of an alkyl, aryl, or heteroaryl Grignard to a solution of sulfuryl fluoride at ambient temperature affords the desired sulfonyl fluorides in 18-78% yield. Furthermore, this method is applicable for in situ sequential reactions, whereby the Grignard reagent can be converted to the corresponding diarylsulfone, sulfonate
Nucleophilic substitution at sulphonyl sulphur. Part 1. Reactivity of thiophen-2-sulphonyl halides in water and methanol–acetonitrile
作者:Antonino Arcoria、Francesco P. Ballistreri、Giuseppe Musumarra、Gaetano A. Tomaselli
DOI:10.1039/p29810000221
日期:——
OH– an approximately linear Hammett correlation is found. Common chloride ion effects on the hydrolysis rate constants appear to be absent. Nucleophilicsubstitution reactions of substituted thiophen-2-sulphonyl chlorides were also studied in MeOH–MeCN, where the Hammettequation is obeyed. The data appear consistent with an SN2-type mechanism which can shift toward an SN1 or an SAN process depending
A highly efficient method for the synthesis of aryl sulfonyl fluorides was developed from aryl sulfonyl chlorides using SO2F2 as fluoride source in up to 98% isolated yield under mild conditions. Gram scale experiments were also conducted, revealing the good practicality of this new protocol.
一种高效合成芳基磺酰氟的方法是从芳基磺酰氯中开发的,使用 SO 2 F 2作为氟化物源,在温和条件下分离收率高达 98%。还进行了克级实验,揭示了这种新协议的良好实用性。