40932-43-2Relevant articles and documents
Development of P- And N-Chirogenic Ligands Based on Chiral Induction from a Phosphorus Donor to a Nitrogen Donor in Palladium Complexes
Iwamoto, Takahiro,Mizuhata, Yoshiyuki,Tokitoh, Norihiro,Nakamura, Masaharu
, p. 1672 - 1677 (2020)
We herein designed and synthesized amino-phosphine ligands 1a-c, which bear a P-chirogenic group, (R)-PtBuMe, and an N-group (NHR) on the pyridylene backbone, as a novel class of chiral ligands possessing chirogenic donors. Ligand 1a (R = Me) stereoselectively coordinated with PdCl2 to predominantly afford the P- and N-chirogenic metal complex 4a having an RN,SP configuration. In contrast, ligands 1b (R = iPr) and 1c (R = tBu) produced a mixture of diastereomers derived from two possible N-centered configurations. In complex 4a, the N-centered configuration was efficiently controlled by the P-chirogenic center via through-space attractive interactions between P-tBu and N-Me. Buried volume analysis indicated that this novel ligand creates a unique C1-symmetric chiral environment derived from both steric and electronic asymmetry.
Novel Iridium complex and organic light emitting device comprising the same
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Paragraph 0195; 0197-0200, (2020/04/09)
The present invention provides a novel iridium complex compound and an organic light emitting device using the same. The iridium complex compound represented by chemical formula 1 can be used as a material of an organic material layer of the organic light emitting device, can be used in a solution process, and can improve efficiency in the organic light emitting device.COPYRIGHT KIPO 2020
HYDROXYL PURINE COMPOUNDS AND USE THEREOF
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, (2018/04/05)
Disclosed are a series of hydroxyl purine compounds and the use thereof as PDE2 or TNFα inhibitors, in particular, the compounds as shown in formula (I), or tautomers thereof or pharmaceutically acceptable salts thereof.