Chemoselective Rearrangement Reactions of Sulfur Ylide Derived from Diazoquinones and Allyl/Propargyl Sulfides
作者:Sijia Yan、Junxin Rao、Cong-Ying Zhou
DOI:10.1021/acs.orglett.0c03493
日期:2020.11.20
three types of rearrangement reactions of sulfur ylidederivedfrom diazoquinones and allyl/propargyl sulfides. With Rh2(esp)2 as the catalyst, diazoquinones react with allyl/propargyl sulfides to form a sulfur ylide, which undergoes a chemoselective tautomerization/[2,3]-sigmatropic rearrangement reaction, a Doyle–Kirmse rearrangement/Cope rearrangement cascade reaction, or a Doyle–Kirmse rearrangement/elimination
potentially useful motif has languished in the annals of organic synthesis. Herein we show that modern tools of catalysis can be employed with free or suitably masked quinone diazides to unleash the power of these classic diazocompounds in the context of both inter‐ and intramolecular olefincyclopropanation.
Rh<sup>II</sup>
-Catalyzed Intermolecular C−H Arylation of Aromatics with Diazo Quinones
作者:Kai Wu、Bei Cao、Cong-Ying Zhou、Chi-Ming Che
DOI:10.1002/chem.201800648
日期:2018.4.3
We developed an efficientsynthesis of biaryls by a dirhodium(II)‐catalyzed aromatic C−H arylation with diazo quinones. The new biaryl synthesis can be performed under mild and neutral conditions and without directing group chelation assistance. The reaction tolerates various functionalities and is applicable to a broad range of aromatics. The regioselectivity of the C−H arylation was often high and
4-Aminopyrimidine-5-carbaldehyde oximes as potent VEGFR-2 inhibitors. Part II
作者:Shenlin Huang、Ronghua Li、Kenneth R. LaMontagne、Lee M. Greenberger、Peter J. Connolly
DOI:10.1016/j.bmcl.2011.01.053
日期:2011.3
A series of 4-aminopyrimidine-5-carbaldehyde oxime was discovered to have potent VEGFR-2 inhibitory activity. Described here are the chemistry for analogue synthesis and SAR study results. The PK properties, kinase profiling, and in vivo efficacy study for compound 4b are also discussed.
HETEROCYCLIC COMPOUND AND ORGANIC LIGHT EMITTING ELEMENT COMPRISING SAME
申请人:LT MATERIALS CO., LTD.
公开号:US20200339513A1
公开(公告)日:2020-10-29
The present specification relates to a heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device comprising the same.