Vinyltriphenylphosphonium salt mediated synthesis of functionalized coumarins
作者:Issa Yavari、Mehdi Adib、Leila Hojabri
DOI:10.1016/s0040-4020(01)00703-7
日期:2001.8
produced in the reaction between triphenylphosphine and dimethyl acetylenedicarboxylate by hydroquinone, resorcinol, catechol or pyrogallol leads to vinylphosphonium salts, which undergo Michael addition with the conjugate base of the hydroxy acid to produce highly functionalized 2-oxo-2H-chromene derivatives in good yields.
[EN] MONOMERS CAPABLE OF DIMERIZING IN AN AQUEOUS SOLUTION, AND METHODS OF USING SAME<br/>[FR] MONOMÈRES APTES À DIMÉRISER DANS UNE SOLUTION AQUEUSE ET LEURS PROCÉDÉS D'UTILISATION
申请人:UNIV CORNELL
公开号:WO2013058824A1
公开(公告)日:2013-04-25
Described herein are monomers capable of forming a biologically useful multimer when in contact with one, two, three or more other monomers in an aqueous media. In one aspect, such monomers may be capable of binding to another monomer in an aqueous media (e.g. in vivo) to form a multimer, (e.g. a dimer). Contemplated monomers may include a ligand moiety, a linker element, and a connector element that joins the ligand moiety and the linker element. In an aqueous media, such contemplated monomers may join together via each linker element and may thus be capable of modulating one or more biomolecules substantially simultaneously, e.g., modulate two or more binding domains on a protein or on different proteins.
MONOMERS CAPABLE OF DIMERIZING IN AN AQUEOUS SOLUTION, AND METHODS OF USING SAME
申请人:Barany Francis
公开号:US20140194383A1
公开(公告)日:2014-07-10
Described herein are monomers capable of forming a biologically useful multimer when in contact with one, two, three or more other monomers in an aqueous media. In one aspect, such monomers may be capable of binding to another monomer in an aqueous media (e.g. in vivo) to form a multimer, (e.g. a dimer). Contemplated monomers may include a ligand moiety, a linker element, and a connector element that joins the ligand moiety and the linker element. In an aqueous media, such contemplated monomers may join together via each linker element and may thus be capable of modulating one or more biomolecules substantially simultaneously, e.g., modulate two or more binding domains on a protein or on different proteins.
Phosphinite ionic liquid (IL-OPPh2) as a recyclable reagent for the efficient synthesis of coumarins under microwave irradiation conditions
作者:H. Valizadeh、H. Gholipour、M. Mahmoudian
DOI:10.1007/bf03245917
日期:2011.9
the efficient synthesis of 4-substituted coumarins via the reaction of di(methyl or ethyl) acetylenedicarboxylate with phenolic compounds under microwave irradiation conditions. The effects of parameters such as the amount of the phosphinite ionic liquid, reaction temperature and reaction time on this procedure were investigated. Products were obtained in good yields using this mild and one-pot methodology