<i>cis</i>-Selective, Enantiospecific Addition of Donor–Acceptor Cyclopropanes to Activated Alkenes: An Iodination/Michael-Cyclization Cascade
作者:Nils L. Ahlburg、Peter G. Jones、Daniel B. Werz
DOI:10.1021/acs.orglett.0c02210
日期:2020.8.21
biologically interesting scaffolds, including barbiturates and isoxazolones. Mechanistic investigations were undertaken to explain the unusual diastereoselectivity and enantiospecificity; these suggest an iodination/Michael-cyclization cascade.
Design and synthesis of porphyrin materials for highly efficient organic photovoltaics
申请人:Hong Kong Baptist University
公开号:US20180006248A1
公开(公告)日:2018-01-04
The present disclosure relates to porphyrin small molecules substitutes designed and synthesized for bulk heterojunction (BHJ) organic solar cells (OSCs). Provided are synthesized materials with strong and ordered self-assembly property, leading to form bi-continuous, interpenetrating networks which are required for efficient charge separation and transport in organic solar cells. The power conversion efficiency (PCE) of the solar cells devices based on the embodiments of the present disclosure have the highest PCE among the solution-processed BHJ solar cell based on porphyrin small molecules up to date.
Allylation/cyclization of β-ketolactone-type heterocyclic compounds, under In(OTf)3-catalysis, for the construction of biologically active dihydropyranocoumarin and dihydropyranochromone derivatives.
The present invention relates to Myrtucommulone analogues of general formula (I)
and the preparation thereof.
本发明涉及一般式(I)的Myrtucommulone类似物及其制备。
Dark coloured azo dyes
申请人:Speckbacher Marcus
公开号:US20090118510A1
公开(公告)日:2009-05-07
The present invention relates to
a) a non-oxidative colouring agent for keratin fibres, in particular human hair, comprising at least one dye according to formula (I) or (II),
b) an oxidative colouring agent for keratin fibres, in particular human hair, which comprises at least one oxidizing agent (e.g. hydrogen peroxide), at least one oxidative dye precursor and at least one dye according to formula (I) or (II), and
c) a lightening agent for keratin fibres, in particular human hair, which comprises at least one oxidizing agent (e.g. hydrogen peroxide) and at least one dye according to formula (I) or (II), with R4 being a cationic group.