Generation of sulfones utilizing β-sulfinyl esters as masked aryl sulfinates under redox-neutral conditions
作者:Yixin Zhang、Zhu Yang、Hongjun Yang、Xuefeng Li、Lu Yang
DOI:10.1039/d4ob00238e
日期:——
A method for generation of SVI sulfones from β-sulfinyl esters (SIV) under transition-metal-free non-oxidative mild conditions is presented. Various sulfones have been achieved with moderate to excellent yields. The advantage of using β-sulfinyl esters as masked aryl sulfinates has also been exemplified using brominated substrates. Oxygen isotope-labeling experiments indicated that the oxygen atoms
提出了一种在不含过渡金属的非氧化温和条件下由 β-亚磺酰酯 (S IV ) 生成 S VI砜的方法。各种砜的产率均达到中等至优异。使用 β-亚磺酰酯作为掩蔽芳基亚磺酸盐的优点也已通过使用溴化底物得到例证。氧同位素标记实验表明,掺入到砜产物中的氧原子来自β-亚磺酰酯的亚砜。针对从S IV生成S VI的机理,提出了连续的β-消除/ O-加成/亚磺酸酯化/β-消除过程。
Bismuth(III) halides: remarkable doping agents for triflic acid in the catalytic sulfonylation of arenes
作者:S. Répichet、C. Le Roux、J. Dubac
DOI:10.1016/s0040-4039(99)01962-0
日期:1999.12
The catalytic activity of triflic acid has been dramatically increased by the addition of a catalytic amount of bismuth(III) chloride. Thus, the catalytic sulfonylation of arenes using the new system BiCl3-triflic acid has been successfully carried out while both components of this catalytic system are poorly active or inactive alone, which suggests a synergy between BiCl3 and triflic acid. Other bismuth halide-triflic acid systems proved to be active. (C) 1999 Elsevier Science Ltd. All rights reserved.
Rearrangements of Aryl Sulfones. III. The Kinetics of the Reaction of o-Methyldiaryl Sulfones with n-Butyllithium<sup>1</sup>
作者:William E. Truce、William J. Ray
DOI:10.1021/ja01511a055
日期:1959.1
LEONTEVA, L. I.;KAN, A. I.;YULDASHEV, X. YU., DOKL. AN UZSSR, 1986, N 2, 36-38