Palladium(ii)-mediated rapid 11C-cyanation of (hetero)arylborons

2018 ◽  
Vol 16 (41) ◽  
pp. 7711-7716 ◽  
Author(s):  
Zhouen Zhang ◽  
Takashi Niwa ◽  
Yasuyoshi Watanabe ◽  
Takamitsu Hosoya
Keyword(s):  
Efficient Method ◽  
Pet Tracers ◽  
Highly Efficient ◽  
Wide Range

A highly efficient method applicable to the synthesis of a wide range of [11C]cyanoarenes, including PET tracers for aromatase imaging, has been developed by a palladium(ii)-mediated rapid 11C-cyanation of (hetero)arylborons with [11C]cyanides.

Copper(II)-Promoted Oxidation/[3+2]Cycloaddition/Aromatization Cascade: Efficient Synthesis of Tetrasubstituted NH-Pyrrole from Chalcones and Iminodiacetates

Synlett ◽  
2019 ◽  
Vol 30 (12) ◽  
pp. 1442-1446 ◽  
Author(s):  
Zhang-qi Lin ◽  
Chao-dong Li ◽  
Zi-chun Zhou ◽  
Shuai Xue ◽  
Jian-rong Gao ◽  
...  
Keyword(s):  
Efficient Method ◽  
Cascade Reaction ◽  
Oxidative Cyclization ◽  
Efficient Synthesis ◽  
Reaction Conditions ◽  
Highly Efficient ◽  
Wide Range ◽  
Reaction Proceeds

A simple and highly efficient method for the preparation of tetrasubstituted NH-pyrrole from a wide range of chalcones and diethyl iminodiacetates via a Cu(OAc)2-promoted oxidation/[3+2]cycloaddition/aromatization cascade reaction has been developed. This reaction proceeds through dehydrogenations, deamination, and oxidative cyclization, affording the corresponding products in good to excellent yields. This convenient methodology for constructing tetrasubstituted NH-pyrroles has several advantages over existing methods, such as the use of easily accessible chalcones and readily available diethyl iminodiacetates, and mild reaction conditions. A wide range of substrates are tolerated.

scholarly journals Access to P-stereogenic compounds via desymmetrizing enantioselective bromination

2021 ◽  
Author(s):  
Qiu-Hong Huang ◽  
Qian-Yi Zhou ◽  
Chen Yang ◽  
Li Chen ◽  
Jin-Pei Cheng ◽  
...  
Keyword(s):  
Phosphine Oxides ◽  
Highly Efficient ◽  
Wide Range ◽  
High Yields

A highly efficient desymmetrizing asymmetric bromination of bisphenol phosphine oxides was developed, providing a wide range of chiral bisphenol phosphine oxides and bisphenol phosphinates with high yields and enantioselectivities.

scholarly journals A general approach to high-efficiency perovskite solar cells by any antisolvent

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Alexander D. Taylor ◽  
Qing Sun ◽  
Katelyn P. Goetz ◽  
Qingzhi An ◽  
Tim Schramm ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Precursor Solution ◽  
Microstructural Characterization ◽  
Application Rate ◽  
Perovskite Layer ◽  
Highly Efficient ◽  
Application Procedure ◽  
Wide Range

AbstractDeposition of perovskite films by antisolvent engineering is a highly common method employed in perovskite photovoltaics research. Herein, we report on a general method that allows for the fabrication of highly efficient perovskite solar cells by any antisolvent via manipulation of the antisolvent application rate. Through detailed structural, compositional, and microstructural characterization of perovskite layers fabricated by 14 different antisolvents, we identify two key factors that influence the quality of the perovskite layer: the solubility of the organic precursors in the antisolvent and its miscibility with the host solvent(s) of the perovskite precursor solution, which combine to produce rate-dependent behavior during the antisolvent application step. Leveraging this, we produce devices with power conversion efficiencies (PCEs) that exceed 21% using a wide range of antisolvents. Moreover, we demonstrate that employing the optimal antisolvent application procedure allows for highly efficient solar cells to be fabricated from a broad range of precursor stoichiometries.

A convenient and highly efficient method for the protection of aldehydes using very low loading hydrous ruthenium(III) trichloride as catalyst

2004 ◽  
Vol 45 (41) ◽  
pp. 7719-7721 ◽  
Author(s):  
Jian-Ying Qi ◽  
Jian-Xin Ji ◽  
Chi-Hung Yueng ◽  
Hoi-Lun Kwong ◽  
Albert S.C. Chan
Keyword(s):  
Efficient Method ◽  
Highly Efficient

Efficient synthesis of π-extended phenazasilines for optical and electronic applications

2014 ◽  
Vol 50 (99) ◽  
pp. 15760-15763 ◽  
Author(s):  
Huanhuan Li ◽  
Yang Wang ◽  
Kai Yuan ◽  
Ye Tao ◽  
Runfeng Chen ◽  
...  
Keyword(s):  
Organic Electronics ◽  
Efficient Method ◽  
Optoelectronic Properties ◽  
Efficient Synthesis ◽  
Highly Efficient ◽  
Device Applications

The rhodium-catalyzed synthesis of phenazasilines from readily achievable biarylhydrosilanes is presented. This highly efficient method offers opportunities for preparing π-extended phenazasilines with enhanced optoelectronic properties for device applications in organic electronics.

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