Obsevations on the cleavage of the bismuth–carbon bond in Bi<sup>V</sup>compounds: a new arylation reaction
作者:Derek H. R. Barton、David J. Lester、William B. Motherwell、M. Teresa Barros Papoula
DOI:10.1039/c39800000246
日期:——
trianyl-organobismuth oxidants are presented; deuterium labelling studies have established that the mechanism of oxidation of allylic alcohols by these reagents involves, to some extent, cleavage of the bismuth–aryl bond; several reactions involving the synthetically useful transfer of an aryl group from bismuth to nitrogen and to carbon are described.
Palladium catalyzed direct benzylation/allylation of malonates with alcohols – in situ C–O bond activation
作者:Xueqin Cao、Yugen Zhang
DOI:10.1039/c6gc00163g
日期:——
High step- and atomic-economy are the endless pursuit in organic and pharmaceutical synthesis. Herein, a new method for directly coupling of benzyl/allylalcohols with malonates via palladium catalyzed Tsuji-Trost type...
The curing rate of a two component laminating adhesive is effectively accelerated by incorporating in at least one component a microencapsulated catalyst. When the laminating adhesive is subjected to an effective amount of pressure (for example, the pressure applied when laminating flexible films together using nip rollers), the catalyst (which may be, for example, a dialkyl tin dicarboxylate) is released from encapsulation and is made available to catalyze the polyurethane-forming reaction between the isocyanate groups and the active hydrogen-functionalized groups in the adhesive mixture.
Chemically reactive adhesive comprising at least one micro encapsulated component
申请人:——
公开号:US20040014860A1
公开(公告)日:2004-01-22
A reaction adhesive is provided. The reaction adhesive contains a reactive resin, an encapsulated curing agent for the resin and crystalline monoparticles with ferromagnetic, ferrimagnetic, superparamagnetic, prezoelectric or ferroelectric properties. The reaction adhesive is applied to the substrates and the substrates joined. The adhesive is subjected to an alternating electrical, magnetric or electromagnetic field to release the curing agent.
Surface film with depositing function, the production and use thereof
申请人:Schmiedel Peter
公开号:US20050049328A1
公开(公告)日:2005-03-03
The invention relates to a composition, comprising at least water, a porous particulate polymer, or a mixture of two or more such polymers and at least one water-soluble or water-dispersible hydrophilic compound with a molecular weight of less than 1000, or a mixture of two or more thereof.