Divergent Reactivity in Cu<sup>II</sup>-Catalyzed Oxidative Coupling between Indole/Tryptamine Derivatives and β-Arylacrylic Acids
作者:Wei Cao、Jinbao Fan、Linyang Yan、Guangyao Zeng、Jinjin Ma、Yajing Wang、Yingjun Zhou、Xu Deng
DOI:10.1021/acs.orglett.9b03697
日期:2019.12.6
Condition-controlled divergent oxidativecoupling reactions between indole/tryptamine derivatives and β-arylacrylic acids with the catalysis of copper(II) have been developed. Specifically, a formal Michael addition/dehydration sequence between indoles and β-arylacrylic acids occurred in the presence of catalytic CuBr2 in CH3CN under air, thus affording highly functionalized 2,3-dihydro-1H-pyrrolo[1
已经开发出条件控制的吲哚/色胺衍生物与β-芳基丙烯酸之间的氧化偶联反应,其催化铜(II)。具体而言,在空气中CH 3 CN中存在催化CuBr 2时,吲哚与β-芳基丙烯酸之间存在正式的迈克尔加成/脱水序列,从而提供了高度官能化的2,3-二氢-1 H-吡咯并[1,2- a ]吲哚。相反,在将氧化剂改变为t BuOOH,将溶剂改变为DCM时,反应过程切换到空前的氧化偶合/环化级联反应,从而选择性地得到四环吡咯并[2,3- b ]二氢吲哚。
Photoactive materials
申请人:——
公开号:US20040265742A1
公开(公告)日:2004-12-30
Photoreactive dendrimers comprising a core portion, branching units and terminal groups, wherein at least one terminal group and/or branching unit is a photoreactive group and wherein the photo reactive groups include preferably cinnamates, coumarins, benzylidenephthalimidines, benzylideneacetophenones, diphenylacetylenes stilbazoles, uracyl, quinolinone, maleinimides, or cinnamylidene acetic acid derivatives and are able to undergo photocyclization, in particular [2+2]-photocyclization.
Biaromatic compound activators of ppargamma receptors and cosmetic/pharmaceutical compositions comprised thereof
申请人:Clary Laurence
公开号:US20070213336A1
公开(公告)日:2007-09-13
Novel biaromatic compounds having the general formula (I):
and cosmetic/pharmaceutical compositions comprised thereof are useful in human or veterinary medicine (in dermatology and also in the fields of cardiovascular diseases, of immune diseases and/or of diseases related to the metabolism of lipids) or, alternatively, in cosmetic compositions.
COPOLYMER, AND LIQUID CRYSTAL ALIGNMENT LAYER INCLUDING CURED PRODUCT THEREOF
申请人:Schadt Martin
公开号:US20140221574A1
公开(公告)日:2014-08-07
Provided is a liquid crystal alignment layer of which a constituent member is a polymer represented by the general formula (I).
提供的是一种液晶取向层,其中成分之一是由通式(I)表示的聚合物。
PHOTOALIGNING MATERIALS
申请人:ROLIC AG
公开号:US20140249244A1
公开(公告)日:2014-09-04
The present invention relates to polymer, homo- or copolymer or oligomer for the photoalignment of liquid crystals, especially for the planar orientation of liquid crystals, comprising a main chain and a side chain, wherein the side chain and/or main chain comprises a polar group, compositions thereof, and its use for optical and electro optical devices, especially liquid crystal devices (LCDs).