Titanium silicates as efficient catalyst for alkylation and acylation of silyl enol ethers under liquid-phase conditions
作者:Manickam Sasidharan、Asim Bhaumik
DOI:10.1016/j.molcata.2011.06.013
日期:2011.7
THF was found to be the suitable solvent for alkylation; whereas dichloromethane exhibited high selectivity for diketones for acylation. The formation of nucleophiles from silyl enol ethers appears to be the key step for successful acetylation and tert-butylation by nucleophilic reaction mechanism. Sn-MFI showed less activity than that observed over the titanosilicates. The observed catalytic activity
SYNTHESIS OF ISOTOPICALLY-LABELED FUNCTIONALIZED DIENES
申请人:Martinez Rodolfo A.
公开号:US20100317886A1
公开(公告)日:2010-12-16
All labeled carbons are derived ultimately from CO, as carbon-13 is separated from its lighter isotope by cyrogenic distillation of carbon monoxide (CO). Creation of stereospecific and site-specific compounds used for starting materials will address growing demands for labeled compounds, including isotopically-labeled functionalized dienes. Functionalized diene compounds can be used as precursors for the production of isotopically labeled pharmaceuticals, biomolecules, and natural products.
The present disclosure provides novel methods of making aluminum complexes with utility for promoting epoxide carbonylation reactions. Methods include reacting neutral metal carbonyl compounds with alkylaluminum complexes.
INHIBITORS OF MACROPHAGE MIGRATION INHIBITORY FACTOR AND METHODS FOR IDENTIFYING THE SAME
申请人:Sircar Jagadish
公开号:US20070238736A9
公开(公告)日:2007-10-11
Inhibitors of MIF are provided which have utility in the treatment of a variety of disorders, including the treatment of pathological conditions associated with MIF activity. The inhibitors of MIF have the following structures:
including stereoisomers, prodrugs and pharmaceutically acceptable salts thereof, wherein n, R
1
, R
2
, R
3
, R
4
, X, and Z are as defined herein. Compositions containing an inhibitor of MIF in combination with a pharmaceutically acceptable carrier are also provided, as well as methods for use of the same.
Polymer Article Modified with a Metal Cation Containing Compound
申请人:Gardi Stefano
公开号:US20090239976A1
公开(公告)日:2009-09-24
A non-agricultural article, which is different from a golf ball or golf ball cover and which is made of a composition containing (a) an organic polymer, and (b-I) a polyacrylic acid sodium salt or a sodium salt of ethylene/methacrylic acid copolymer, and (b-II) manganese stearate.