Sulfated tungstate: an efficient catalyst for the Ritter reaction
作者:Kamlesh V. Katkar、Pramod S. Chaudhari、Krishnacharya G. Akamanchi
DOI:10.1039/c0gc00759e
日期:——
The use of sulfated tungstate as an efficient and reusable catalyst for the preparation of amides from alcohols and nitrilesvia the Ritter reaction pathway is discussed. The reaction proceeds under solvent free conditions.
E-Selectin Antagonists Modified By Macrocycle Formation to the Galactose
申请人:GLYCOMIMETICS, INC.
公开号:US20160333043A1
公开(公告)日:2016-11-17
Provided herein are glycomimetic E-selectin antagonist compounds of formula (I)) and pharmaceutical compositions comprising at least one of the same. The compounds of the present disclosure include trisaccharide domain mimics comprising at least one macrocycle created through the 2
nd
and 3
rd
positions on a galactose within the mimic. Methods are also provided comprising using at least one of such compounds and compositions comprising at least one of the same to treat and/or prevent diseases and disorders treatable by inhibiting binding of an E-selectin to an E-selectin ligand.
One-pot synthesis of N-tert-butyl amides from alcohols, ethers and esters using ZnCl2/SiO2 as a recyclable heterogeneous catalyst
作者:Fatemeh Tamaddon、Fatemeh Tavakoli
DOI:10.1016/j.molcata.2011.01.013
日期:2011.3
ZnCl2/SiO2 has been found to be an efficient and reusable catalyst for conversion of alcohols, ethers and esters to corresponding amides via the Ritter reaction in high yield. It was found that benzonitrile reacted with tert-butyl acetate faster than the other sources of tert-butyl carbocation. (C) 2011 Elsevier B.V. All rights reserved.
(P2O5/SiO2): a useful heterogeneous alternative for the Ritter reaction
作者:Fatemeh Tamaddon、Mehdi Khoobi、Elham Keshavarz
DOI:10.1016/j.tetlet.2007.03.134
日期:2007.5
Tertiary alcohols as well as primary and secondary benzylic alcohols react efficiently with nitriles to give the corresponding amides in good to excellent yields in the presence of P2O5/SiO2 (60% w/w). (c) 2007 Elsevier Ltd. All rights reserved.
A New Reaction of Nitriles. III. Amides from Dinitriles