[EN] TRIAZINES SUITABLE FOR USE IN FABRIC TREATMENT COMPOSITIONS<br/>[FR] TRIAZINES POUVANT ETRE UTILISEES DANS DES COMPOSITIONS DE TRAITEMENT DE TISSUS
申请人:UNILEVER PLC
公开号:WO2005123699A1
公开(公告)日:2005-12-29
A water-soluble, triazine-based, non-dye, cellulose cross-linking agent that has a highly flexible linking group between at least two, mono-reactive cross-linking moieties and further hydrophilic or non-hydrophilic substituents, being preferrably represented by the general formula (I): (R1)(X1)T-L1-B-T(X2)(R2) wherein: R1 et R2 are cellulose-unreactive substituent groups on the s-triazine (T) and may be the same or different, X1 and X2 are leaving groups on the s-triazine which are lost on reaction with cellulose and may be the same or different, L1 et L2 are linking groups, an may be the same or different or absent, B is the bridging group comprising or consisting of at least one aliphatic polyoalkylene chain.
building blocks from α‐sulfonyl nitriles, circumventing traditional base‐mediated α‐alkylation conditions and strong single electron donors. The reaction tolerates numerous functional groups including free alcohols, esters, amides, and it can be applied also to the α‐desulfonylation of ketones. In addition, a one‐pot desulfonylative alkylation is demonstrated. Preliminary mechanistic studies indicate a catalyst‐dependent
Vinylogous nucleophilic catalysis. Tertiary amine promoted hydrolysis of 1-alkene-1-sulfonyl chlorides
作者:James Frederick King、John Henry Hillhouse、Stanisław Skonieczny
DOI:10.1139/v84-339
日期:1984.10.1
We present evidence that the reactions of ethenesulfonyl chloride (1) and trans-1-propene-1-sulfonyl chloride (3) with water in the presence of pyridine, trimethylamine, and a number of other tertiary amines proceed primarily by way of an initial vinylogous substitution reaction to form the cationic sulfene, , which subsequently reacts with water either by addition (and deprotonation) to form the betaine
Low-Valent Titanium-Mediated Radical Conjugate Addition Using Benzyl Alcohols as Benzyl Radical Sources
作者:Takuya Suga、Shoma Shimazu、Yutaka Ukaji
DOI:10.1021/acs.orglett.8b02305
日期:2018.9.7
A concise method to directly generate benzyl radicals from benzyl alcohol derivatives has been developed. The simple and inexpensive combination of TiCl4(collidine) (collidine = 2,4,6-collidine) and manganese powder afforded a low-valent titanium reagent, which facilitated homolytic cleavage of benzylic C–OH bonds. The application to radicalconjugate addition reactions demonstrated the broad scope
Mechanistic Study of the Titanocene(III)-Catalyzed Radical Arylation of Epoxides
作者:Andreas Gansäuer、Daniel von Laufenberg、Christian Kube、Tobias Dahmen、Antonius Michelmann、Maike Behlendorf、Rebecca Sure、Meriam Seddiqzai、Stefan Grimme、Dhandapani V. Sadasivam、Godfred D. Fianu、Robert A. Flowers II
DOI:10.1002/chem.201404404
日期:2015.1.2
An atom‐economical and catalyticarylation of epoxide‐derived radicals is described. The key step of the catalytic system is a sequential electron and proton transfer for the rearomatization of the radical σ‐complex and catalyst regeneration. Kinetic, computational, spectroscopic, and cyclovoltammetric investigations highlight the key issues of the reaction mechanism and catalyst stabilization by collidine