Mechanistic Investigations of the Pd‐Catalyzed Hydrogenolysis of Ketene Heterodimer β‐Lactones
作者:Manashi Panda、Mukulesh Mondal、Shi Chen、Ahmad A. Ibrahim、Dylan J. Twardy、Nessan J. Kerrigan
DOI:10.1002/ejoc.202000976
日期:2020.9.22
Catalytic hydrogenolysis of the Z‐isomer of a series of aryl‐substituted ketene heterodimers facilitated access to deoxypropionate derivatives, favoring the anti‐isomer, and with excellent transfer of chirality. Anti‐β‐elimination and an anti‐selective hydrogenation of an E‐olefin intermediate are proposed to be key steps.
A pigment dispersion includes a pigment with at least one carboxylic acid group and a block copolymer including aromatic monomers having at least one carboxylic acid group or a salt thereof and aromatic monomers having at least one sulfonic acid group or a salt thereof.
The pigment dispersions can be used for manufacturing inkjet inks and for the coating of colored layers.
Asymmetric Synthesis of Deoxypropionate Derivatives via Catalytic Hydrogenolysis of Enantioenriched <i>Z</i>-Ketene Heterodimers
作者:Shi Chen、Ahmad A. Ibrahim、Mukulesh Mondal、Anthony J. Magee、Adam J. Cruz、Kraig A. Wheeler、Nessan J. Kerrigan
DOI:10.1021/acs.orglett.5b01391
日期:2015.7.2
A diagterosetective approach to deoxypropionate derivatives through Pd/C-catalyted hydrogenolysis of enantio enriched ketene heterodimers is described. Catalytic hydrogenolysis of the Z-isomer of ketene heterodimers facilitates access to, anti-deoxypropionate derivatives (10 examples With dr 7:1 to >20:1). Transfer of chirality from the Z-ketene heterodimer to an acid product was good to excellent in most as (78-99% ee for 12 examples).
POLYMER RESIN BINDER, PIGMENT DISPERSIONS, AND INK-JET INK FOR COLOR FILTER
申请人:KEE In-seo
公开号:US20070155856A1
公开(公告)日:2007-07-05
Provided is a polymer resin binder included in an inkjet ink for a color filter which is manufactured by polymerizing multiple types of functional monomer including: a monomer having an affinity for the pigment; a monomer having high mechanical strength; or a monomer having an affinity for a solvent, and contains an amine based organic material. Accordingly, the polymer resin, binder for forming inkjet ink for a color filter can improve a dispersion property and dispersion stability and an ejection property and ejection stability of inkjet ink.