通过吲哚和丙酮的级联加成/分子内环化反应,分子碘催化获得一类重要的生物相关吲哚衍生物——环戊[ b ]吲哚。对不同取代模式的探索揭示了反应中重要的底物控制。吲哚的高密度电子核心对于吲哚基-环戊[ b ]吲哚衍生物的形成至关重要;相反,核心的电子缺乏阻碍了环化过程,从而引导双(吲哚基)丙烷的形成。对机理途径的研究表明,双(吲哚基)烷烃是加成环化过程的中间体。这种简单的实验方法提供了环戊环吲哚的可持续合成途径。
available stable radical cation triarylaminium salt can be used as an efficient initiator for Friedel–Craftsreaction of indoles with enamides to regioselectively construct complex indole derivatives and for double Friedel–Craftsreaction of indoles with vinyl ethers to offer 3,3′-Bis(indolyl)alkane derivatives. The ready availability of the starting materials and the usefulness of the products make this
HBF<sub>4</sub>-Catalysed Nucleophilic Substitutions of Propargylic Alcohols
作者:Elena Barreiro、Alvaro Sanz-Vidal、Eric Tan、Shing-Hing Lau、Tom D. Sheppard、Silvia Díez-González
DOI:10.1002/ejoc.201501249
日期:2015.12
The activity of HBF4 (aqueous solution) as a catalyst in propargylation reactions is presented. Diverse types of nucleophiles were employed in order to form new C–O, C–N and C–C bonds in technical acetone and in air. Good to excellent yields and good chemoselectivities were obtained using low acid loading (typically 1 mol-%) under simple reaction conditions.
Gold(I) or Silver Catalyzed Synthesis of α-Indolylacrylates
作者:Valentina Pirovano、Diego Facoetti、Monica Dell’Acqua、Emanuela Della Fontana、Giorgio Abbiati、Elisabetta Rossi
DOI:10.1021/ol401716b
日期:2013.8.2
Methyl 2-acetamidoacrylate reacted with various 2-substituted indoles in the presence of catalytic amounts of AgSbF6 or AuPPh3NTf2 to provide the corresponding methyl 2-(2-substituted-1H4ndo1-3-yl)acrylates.
ORGANIC ELECTROLUMINESCENT DEVICE
申请人:Yagi Kazunari
公开号:US20100108995A1
公开(公告)日:2010-05-06
An organic electroluminescent device is provided and includes: a pair of electrodes; and at least one organic layer between the pair of electrodes, the at least one organic layer including a light-emitting layer. The at least one organic layer contains an indole compound represented by formula (1):
in which Ind
101
represents a substituted or unsubstituted indole ring, L
101
represents a linking group, Ind
101
and L
101
are connected to each other at 2- or 3-position of Ind
101
, and n
101
represents an integer of 2 or more.