Assembly of organosilver(I) frameworks with terminal ethynide and ethenyl groups on separate pendent arms attached to an aromatic ring
摘要:
A series of eight silver(I) trifluoroacetate complexes based on aromatic ligands bearing terminal ethynyl and ethenyl groups on separate pendent arms has been synthesized. Single-crystal X-ray analysis of the complexes provided detailed information on the influence of argentophilicity, ligand disposition and orientation, and the co-existence of three types of silver-carbon bonding (silver-ethynide, silver-ethenyl and silver-aromatic) in coordination network construction, as well as the roles played by weak pi-pi stacking and anion-pi interactions in supramolecular assembly. (C) 2012 Elsevier Ltd. All rights reserved.
Enantioselective annulation of enals with 2-naphthols by triazolium salts derived from <scp>l</scp>-phenylalanine
作者:Guo-Tai Li、Qing Gu、Shu-Li You
DOI:10.1039/c5sc00731c
日期:——
The annulation reaction between enals and 2-naphthols catalyzed by a novel NHC affords enantioenriched β-arylsplitomicins in good yields and enantioselectivity.
NHC催化的烯醛和2-萘酚之间的环化反应产生了产率高且对映选择性良好的β-芳基裂孢霉素。
Enzymatic Allylation of Catechols
作者:Yixin Zhang、Wujun Liu、Muhammad Sohail、Xueying Wang、Yuxue Liu、Zongbao K. Zhao
DOI:10.1246/cl.150237
日期:2015.7.5
Enzymatic allylation of catechols was realized via catechol O-methyltransferase (COMT) using an allylated S-adenosyl-l-methionine (allyl-SAM) analog, with relatively good chemo- and regioselectivities. This new reaction offered an alternative procedure for allylation of catechols, which can be expanded as a biocatalytic allylation method in organic synthesis.
A regioisomer of β‐lapachone and two analogs were synthesized and evaluated for their antitumor activities. All three compounds tested were found to exhibit promising activities against PC‐3, HepG2, and Raji cancer cell lines in μM range.
The present invention provides an oxazine compound which contains a group having an aromatic ring structure and a plurality of specified carbon-carbon double bond structure so as to achieve an object. The present invention further provides a composition containing the oxazine compound of the present invention, a cured product containing the composition, and a laminate having a layer of the cured product. The present invention further still provides a composition for a heat-resistant material and a composition for an electronic material, which contain the composition containing the oxazine compound of the present invention so as to achieve the object.
The present invention provides an oxazine compound which contains a group having an aromatic ring structure and a plurality of specified carbon-carbon double bond structure so as to achieve an object. The present invention further provides a composition containing the oxazine compound of the present invention, a cured product containing the composition, and a laminate having the cured product layer. The present invention further still provides a composition for a heat-resistant material and a composition for an electronic material, which contain the composition containing the oxazine compound of the present invention so as to achieve an object.