We have developed a photoinduced oxidative cross-coupling of thiophenols with alcohols for O–S bond formation. The protocol uses visible light, a metal-free photocatalyst, and oxygen as the oxidant for the selectivesynthesis of alkyl benzenesulfonates; no ligand co-additive is necessary. Mechanistic studies suggested that the disulfide and alkyl benzenesulfinate are involved as intermediates and that
DREHER, W.;KLAMBERG, H., FRESENIUS Z. ANAL. CHEM., 331,(1988) N 3-4, 290-294
作者:DREHER, W.、KLAMBERG, H.
DOI:——
日期:——
COLORING COMPOSITION FOR TEXTILE PRINTING, TEXTILE PRINTING METHOD AND FABRICS
申请人:FUJIFILM CORPORATION
公开号:US20140366285A1
公开(公告)日:2014-12-18
A coloring composition for textile printing including a dye represented by Formula (X) and water are provided [in Formula (X), each of X
21
to X
24
independently represents an oxygen atom or a sulfur atom; each of R
21
to R
24
represents an alkyl group, an aryl group, or a heteroaryl group; M represents a hydrogen atom, a metal element, a metal oxide, a metal hydroxide, or a metal halide; each of P
1
to P
4
independently represents an aromatic ring, and the aromatic ring may have a particular substituent; each of n
21
to n
24
independently represents from 0 to 4, and the sum of n
21
to n
24
is at least 1; provided that, the structure of Formula (X) contains at least two ionic hydrophilic groups].
US5717124A
申请人:——
公开号:US5717124A
公开(公告)日:1998-02-10
Copper-Catalyzed Multicomponent Reaction of DABCO·(SO<sub>2</sub>)<sub>2</sub>, Alcohols, and Aryl Diazoniums for the Synthesis of Sulfonic Esters
作者:Yang Wang、Lingling Deng、Yu Deng、Jianlin Han
DOI:10.1021/acs.joc.8b00447
日期:2018.4.20
A Cu-catalyzed multicomponent cascade reaction of DABCO·(SO2)2 (DABSO), alcohol, and aryl diazonium tetrafluoroborate was developed which afforded sulfonic esters in moderate to good chemical yields. In this reaction, the SO2 surrogate DABSO was used for the first time in the synthesis of sulfonic aliphatic esters. This multicomponent reaction was carried out under mild conditions and tolerated a wide