Formal [4 + 1] annulation of fluorinated sulfonium salt with cyclic unsaturated imines to access CF<sub>3</sub>-substituted pyrroles
作者:Tao Chen、Aoning Wang、Linxue Zhang、Chenlong Wei、Juhui Huang、Xiang Liu、Zhenqian Fu
DOI:10.1039/d1ob00218j
日期:——
Formal [4 + 1] annulation of easily available fluorinated sulfonium salt with cyclic unsaturated imines has been successfully developed. A structurally diverse set of CF3-substituted dihydropyrroles was efficiently constructed in acceptable to excellent yields with excellent diastereoselectivities. The resulting CF3-containing dihydropyrroles from this transition metal-free strategy could be easily
Enantioselective phospha-Michael reaction of diethyl phosphonate with exocyclic α,β-unsaturated benzocyclic ketones catalyzed by a dinuclear zinc−AzePhenol catalyst
作者:Na Shao、Yong-Yang Luo、Hui-Jie Lu、Yuan-Zhao Hua、Min-Can Wang
DOI:10.1016/j.tet.2018.03.016
日期:2018.4
The dinuclear zinc complexes as high performance catalysts were used to catalyze phospha-Michael reaction of exocyclic α,β-unsaturated benzocyclic ketones under mild conditions, and the desired products possessing 1-indanones or 1-tetralones skeleton were obtained with excellent enantioselectivities of up to 99%/99% ee and yields of up to 99%. The absolute stereochemistry of the major products catalyzed
申请人:Alpha Chem Co., Ltd. 주식회사 알파켐(119981111034) Corp. No ▼ 130111-0047092BRN ▼124-81-55891
公开号:KR101548686B1
公开(公告)日:2015-09-02
본 발명은 신규한 전자 수송 물질 및 이를 포함하는 유기 발광 소자에 관한 것으로서, 본 발명에 따른 전자 수송 물질을 이용하여 발광특성이 뛰어날 뿐만 아니라 구동전압을 강화시켜줌으로써 전력효율의 상승을 유도하여 소비전력이 개선된 유기 발광 소자를 제조할 수 있는 장점이 있다.
This invention relates to a novel electronic transport material and an organic light-emitting device including the same. By using the electronic transport material according to the present invention, it is possible to manufacture an organic light-emitting device with improved luminous characteristics and enhanced driving voltage, thereby inducing an increase in power efficiency and producing an organic light-emitting device with improved power consumption.
Selectivity in the Aerobic Dearomatization of Phenols: Total Synthesis of Dehydronornuciferine by Chemo- and Regioselective Oxidation
作者:Kenneth Virgel N. Esguerra、Jean-Philip Lumb
DOI:10.1002/anie.201710271
日期:2018.2.5
and highlight the advantages of confining oxygen activation and substrate oxidation to the catalyst's inner‐coordination sphere. This gives rise to predictable selectivity that we use for a concise synthesis of the aporphine dehydronornuciferine.
alkyl aldehydes under basic conditions led to the corresponding 2-alkylidene-1-tetralones with fair yields and complete stereoselectivities. The E-stereochemistry of the adducts has been determined through their photoisomerisation and by comparison of the 1H NMR spectra.