以熊田和Sonogashira偶联反应为关键步骤,合成了一系列带有两个X型5,5'-双(苯基乙炔基)-2,2'-联噻吩基的带有两个长侧链烷基和两个末端甘油基的Balaamphiphils。通过POM,DSC和X射线散射研究了这些化合物的热致液晶行为。与侧向烷基链两种不同液晶相的具有蜂窝结构,柱的伸长六角Δ/ p 6毫米,由(有缺陷的)形成三角形的蜂窝单元,和Col SQU / p 4毫米对于这些化合物,观察到带有方格的样品。UV和PL测量表明荧光特性使其成为潜在的候选荧光传感器设备。
Side-chain effects on the fragmentation behaviour of alkylthiophenes
摘要:
AbstractThe processes leading to the fragment ions formed from alkylthiophene molecule ions by benzylic cleavage without and with transfer of one hydrogen from the side‐chain to the ring and the influence of additional methyl groups on the relative importance of these two fragmentation reactions were investigated.
Ruthenium‐Catalyzed Dehydrogenation Through an Intermolecular Hydrogen Atom Transfer Mechanism
作者:Lin Huang、Alessandro Bismuto、Simon A. Rath、Nils Trapp、Bill Morandi
DOI:10.1002/anie.202015837
日期:2021.3.22
The direct dehydrogenation of alkanes is among the most efficient ways to access valuable alkene products. Although several catalysts have been designed to promote this transformation, they have unfortunately found limited applications in fine chemical synthesis. Here, we report a conceptually novel strategy for the catalytic, intermolecular dehydrogenation of alkanes using a ruthenium catalyst. The combination
[EN] HETEROARYL NITRILE COMPOUNDS USEFUL AS INHIBITORS OF CATHEPSIN-S<br/>[FR] COMPOSÉS D'HÉTÉROARYL-NITRILE UTILES COMME INHIBITEURS DE CATHEPSINE-S
申请人:BOEHRINGER INGELHEIM INT
公开号:WO2011109470A1
公开(公告)日:2011-09-09
Disclosed are Cathepsin-S reversible inhibitor compounds of the formula (I) which are useful in the treatment of autoimmune and other diseases. Also disclosed are pharmaceutical compositions containing the same, and methods of making and using the same.
Thiophenes and benzothiophenes bearing alkyl or aryl substituents at the 2- or 3-positions are successfully carboxylated with CO2 with aid of EtAlCl2 to give the corresponding 2- or 3-carboxylic acids in up to 90% yield.
self-assemble into a series of liquid-crystallinehoneycombs, formed by the π-conjugated rods which enclose polygonal prismatic cells filled by the lateral chains. With increasing chain length a discontinuous transition from triangular to square honeycombs takes place. At this transition a periodic honeycomb composed of a mixture of square and triangular cells in a ratio 1 : 2 was formed at low temperature, whereas
[EN] BENZYLHYDROXYDE DERIVATIVES, PREPARATION THEREOF AND THERAPEUTIC USE THEREOF<br/>[FR] DÉRIVÉS DE BENZYLHYDROXYDE, LEUR PRÉPARATION ET LEUR UTILISATION THÉRAPEUTIQUE
申请人:SANOFI SA
公开号:WO2016066742A1
公开(公告)日:2016-05-06
The invention relates to benzylhydroxyde derivatives of formula (I): The invention also relates to the preparation and the therapeutic use of the compounds of formula (I).