579-52-2Relevant academic research and scientific papers
Traceless directing group for stereospecific nickel-catalyzed alkyl-alkyl cross-coupling reactions
Greene, Margaret A.,Yonova, Ivelina M.,Williams, Florence J.,Jarvo, Elizabeth R.
supporting information; experimental part, p. 4293 - 4296 (2012/09/22)
Stereospecific nickel-catalyzed cross-coupling reactions of benzylic 2-methoxyethyl ethers are reported for the preparation of enantioenriched 1,1-diarylethanes. The 2-methoxyethyl ether serves as a traceless directing group that accelerates cross-coupling. Chelation of magnesium ions is proposed to activate the benzylic C-O bond for oxidative addition.
Tuning the reducing properties of 1,2-diaryl-1,2-disodiumethanes
Azzena, Ugo,Pisano, Luisa,Antonello, Sabrina,Maran, Flavio
supporting information; experimental part, p. 8064 - 8070 (2010/03/02)
(Chemical Equation Presented) We investigated the reducing properties of a series of 1,2-diaryl-1,2-disodiumethanes by means of equilibration reactions. The electron-donor power of these vic-diorganometals is strongly affected by the nature of substituents present either on the aromatic ring(s) or on the carbanionic centers, and it can be correlated with their ability to delocalize the arylmethyl carbanions. These findings are supported by electrochemical analysis of the reduction behavior of the parent 1,2-diarylalkene. Applications of these results to the reduction of selected substrates are described. 2009 American Chemical Society.
Halogen-magnesium exchange on unprotected aromatic and heteroaromatic carboxylic acids
Kopp, Felix,Wunderlich, Stefan,Knochel, Paul
, p. 2075 - 2077 (2008/02/09)
The magnesiation of halogenated aromatic and heteroaromatic carboxylic acids is accomplished by their treatment with MeMgCl in the presence of LiCl and subsequent reaction with i-PrMgCl·LiCl; the resulting double-magnesiated species react with a variety of electrophiles in up to 97% yield. The Royal Society of Chemistry.
t-Bu-Amphos-RhCl3·3H2O: A highly recyclable catalyst system for the cross-coupling of aldehydes and aryl- and alkenylboronic acids in aqueous solvents
Huang, Rongcai,Shaughnessy, Kevin H.
, p. 4484 - 4486 (2007/10/03)
The combination of t-Bu-Amphos and RhCl3·3H2O gave the first highly recyclable catalyst for the coupling of aryl- and vinylboronic acids with aldehydes in aqueous solvents. The Royal Society of Chemistry 2005.
Method for producing Grignard compounds
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Page/Page column 13-14, (2008/06/13)
The invention relates to a process for preparing Grignard compounds of the formula I. The invention additionally relates to compounds of the formula I and to polymer-bound compounds of the formula Ia. The invention further relates to the use of the process for preparing substance libraries and to the use of the compounds of the formulae I and Ia in chemical synthesis.
METHOD OF SUBSTITUENT INTRODUCTION THROUGH HALOGEN-METAL EXCHANGE REACTION
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Page/Page column 19, (2010/02/10)
A method of exchanging a halogen atom of a halide, which has a group containing an acidic proton and in which one or more halogen atom(s) is/are substituted on a carbon atom of the carbon-carbon double bond, with a metal atom by halogen-metal-exchange reaction and introducing an electrophilic reagent into the carbon atom to which the metal atom is attached. The above method is an industrially excellent method of introducing a substituent by halogen-metal exchange reaction.
CATHEPSIN CYSTEINE PROTEASE INHIBITORS
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Page 51-52, (2010/02/06)
This invention relates to class of compounds which are cysteine protease inhibitors, including but not limited to, inhibitors of cathepsins K, L, S and B. These compounds are useful for treating diseases in which inhibition of bone resorption is indicated, such as osteoporosis. They have the following structure: Formula (I).
Non-cryogenic metalation of aryl bromides bearing proton donating groups: Formation of a stable magnesio-intermediate
Kato, Shinji,Nonoyama, Nobuaki,Tomimoto, Koji,Mase, Toshiaki
, p. 7315 - 7317 (2007/10/03)
Bromine-metal exchange of o-bromobenzoic acid (1) with Bu2Mg followed by n-BuLi was successfully carried out at non-cryogenic temperature (>-20°C), and gave a stabilized metal species which smoothly reacted with several electrophiles. This methodology expanded to several other bromides bearing proton donating groups (PDGs).
Synthesis of novel analogues of the delta opioid ligand SNC-80 using REM resin
Cottney,Rankovic,Morphy
, p. 1323 - 1328 (2007/10/03)
Focused libraries of delta opioid ligands were synthesised using REM resin methodology. Several high affinity compounds were identified with good selectivity over the g opioid receptor. Automated REM resin recycling was used to synthesise larger amounts o
Synthesis of novel analogues of the delta opioid ligand SNC-80 using AlCl3-promoted aminolysis
Barn,Bom,Cottney,Caulfield,Morphy
, p. 1329 - 1334 (2007/10/03)
Two focused libraries of delta opioid ligands were synthesised using AlCl3 facilitated aminolysis. Several compounds were identified with DOR binding affinities higher or similar to SNC-80. A novel acyclic derivative of SNC-80 produced antinoci
