Square-planar dichloro palladium complexes with trans-configurated phosphine ligands avoiding ortho-metallation: Ligand design, complex synthesis, molecular structure and catalytic potential for Suzuki cross-coupling reactions
摘要:
The square-planar palladium complexes trans-[PdCl2(PPh2-CH2-2,4,6-C6H2Me3)(2)] (1) and trans-[PdCl2(eta(2)-PPh2-CH2-2,4,6-C6HMe3-CH2-2,4,6-C6HMe3-CH2-PPh2)] (2) have been synthesized from [PdCl2(cod)] (cod = 1,5-cyclooctadiene) and the corresponding new phosphine or diphosphine ligands. The single-crystal X-ray structure analysis reveals for both complexes a trans arrangement of the two chlorine and of the two phosphorus atoms. In both cases, ortho-metallation leading to palladacycles is not possible, since all ortho positions in the benzylic rings of I and 2 are blocked by methyl substituents. Both complexes are found to catalyze Suzuki cross-coupling reactions of deactivated and even bulky arene substrates. (c) 2006 Elsevier B.V. All rights reserved.
ACTIVE ENERGY RAY-CURABLE INK COMPOSITION FOR OFFSET PRINTING AND METHOD FOR PRODUCING PRINTED MATERIAL USING SAME
申请人:Sakata INX Corporation
公开号:EP3569664A1
公开(公告)日:2019-11-20
[Problem] The present invention provides an active energy ray-curable ink composition for offset printing which can maintain excellent drying characteristics with a small dose of UV light.
[Solution] An active energy ray-curable ink composition for offset printing comprising a compound having ethylenically unsaturated bond, a photopolymerization initiator, and an epoxidized fat or oil is used. Although epoxidized fat or oil is not polymerized through radical polymerization, the present inventors, who have conducted research, have revealed that the reactivity of a radically polymerizable ink composition is increased through addition of epoxidized fat or oil thereto.