STUDIES ON MOLECULAR-REARRANGEMENTS OF α-GLYCOLS. VIII. REDUCTION OF αβ-DINAPHTHYL KETONE (AN ATTEMPT TO COMPARE THE ELECTRO NEGATIVITIES OF α- AND β- NAPHTHYL RADICALS)
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‐Heterocyclic‐Carbene‐Coordinated Palladium Catalysts for 1,2‐Addition of Arylboron Compounds to Carbonyl Compounds
作者:Yuta Okuda、Masahiro Nagaoka、Tetsuya Yamamoto
DOI:10.1002/cctc.202001464
日期:2020.12.16
primary, secondary, and tertiary alcohols by the 1,2‐addition of arylboronic acids or boronates to carbonyl compounds, including unactivated ketones, using novel bulky yet flexible N‐heterocyclic carbene (NHC)‐coordinated 2,6‐di(pentan‐3‐yl)aniline (IPent)‐based cyclometallated palladium complexes (CYPs) as catalysts is reported. The PhS‐IPent‐CYP‐catalyzed reactions are efficient at low catalyst loadings
The combination of 0 valent palladium precursor and bromo-substituted 1,3-diaryl-imidazoline carbene ligand precursor such as 1-(2-bromophenyl)-3-(2,6-diisopropylphenyl)-imidazolinium chloride 1a exhibited high catalytic activity for the 1,2-addition of arylboronic acids to aldehydes including aqueous formaldehyde. (C) 2014 Elsevier Ltd. All rights reserved.
Palladium-imidazolinium carbene-catalyzed arylation of aldehydes with arylboronic acids in water
The catalytic arylation of aldehydes with arylboronic acids in only water was found to be achieved using the palladium/thioether-imidazolinium chloride system in good to excellent yields. This catalytic process showed high tolerance for a broad range of substrates, giving a variety of carbinol derivatives with 2.0-3.0 mol % of the catalyst. (C) 2010 Elsevier Ltd. All rights reserved.
125. Polycyclic aromatic hydrocarbons. Part XXVIII. Dibenzfluorenes
作者:Richard H. Martin
DOI:10.1039/jr9410000679
日期:——
POLYMER COMPOSITION HAVING PHOTOALIGNABLE GROUP, LIQUID CRYSTAL ALIGNMENT FILM FORMED OF THE POLYMER COMPOSITION, AND OPTICAL DEVICE HAVING PHASE DIFFERENCE PLATE FORMED OF THE LIQUID CRYSTAL ALIGNMENT FILM
申请人:JNC CORPORATION
公开号:US20150322346A1
公开(公告)日:2015-11-12
To provide a photoalignable material that can yield a photoalignable film having a high optical uniformity and no alignment defect, and is excellent in sensitivity to allow photoalignment even with exposure in a short period of time, and a liquid crystal alignment film having a high alignment stability of a liquid crystal compound from the photoalignable material. A photoalignable polymer composition containing a specific photoalignable polymer and a specific polymer that is reactive with the photoalignable polymer is manufactured, and the photoalignable film is manufactured by applying the polymer composition onto a base material or the like, drying the applied composition thereon, and irradiating the dried composition with light. Furthermore, the liquid crystal alignment film is manufactured by allowing alignment of molecules of the liquid crystal compound in the photoalignment film.