- Carbon monoxide is used as a source of halogen compound heterogeneous palladium catalyst in the presence of the aldehyde carbonyl compound by reaction carbonylation method (by machine translation)
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[Problem] catalyst and the presence of carbon monoxide, the halogen compound is a carbonyl compound in the carbonylation reaction, catalysts or carbon monoxide source technique has problems. [Solution] the presence of the catalyst and the carbon monoxide, the halogen compound is carbonylation reaction method for producing a carbonyl compound, As a heterogeneous palladium catalyst, carbon monoxide is produced from an aldehyde carbonyl compound used in the method. [Drawing] no (by machine translation)
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Paragraph 0067; 0078; 0079; 0080
(2018/04/06)
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- Practical: In situ -generation of phosphinite ligands for palladium-catalyzed carbonylation of (hetero)aryl bromides forming esters
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An effective method for alkoxycarbonylation of (hetero)aryl bromides is developed in the presence of in situ-generated phosphinite ligands tBu2POR (R = nBu, nPr, Et or Me). For this purpose commercially available tBu2PCl was used as the pre-ligand in the presence of different alcohols. For the first time cross coupling reactions with two alcohols-one generating the ligand, the other used as substrate-were developed. Through this method, ligand optimization can be performed in a more efficient manner and the desired products could be obtained with good yields and selectivity.
- Wang, Lin,Neumann, Helfried,Spannenberg, Anke,Beller, Matthias
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supporting information
p. 7469 - 7472
(2017/07/12)
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- Oxidative esterification of alcohols and aldehydes using supported iron oxide nanoparticle catalysts
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The synthesis of esters has become an important industrial methodology over the past years because of the role that they serve in the chemical industry. In this study, we present the use of a novel catalyst for the direct conversion of aldehydes into esters. The yields obtained using supported iron oxide nanoparticle catalysts (FeNP) are very high (>90%). The catalyst is also shown to be very stable as shown by the recyclability study (up to 11 times).
- Rajabi, Fatemeh,Arancon, Rick A.D.,Luque, Rafael
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p. 101 - 103
(2015/02/19)
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- ALLOSTERIC BINDING COMPOUNDS
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The present invention relates to allosteric binding compounds of formula (I), especially for the treatment of CNS disorders, together with pharmaceutical compositions and methods of treatment including these compounds.
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Page/Page column 19
(2012/04/23)
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- ALLOSTERIC BINDING COMPOUNDS
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The present invention relates to allosteric binding compounds of formula (I), especially for the treatment of CNS disorders, together with pharmaceutical compositions and methods of treatment including these compounds.
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Page/Page column 55
(2010/09/17)
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- Mitsunobu reaction modifications allowing product isolation without chromatography: Application to a small parallel library
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Readily available reagents, triphenylphosphine resin and di-t- butylazodicarboxylate, were used in Mitsunobu reactions and the byproducts were removed without chromatography. The new modification was utilized to prepare a small, parallel, solution phase library. (C) 2000 Elsevier Science Ltd.
- Pelletier, Jeffrey C.,Kincaid, Scott
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p. 797 - 800
(2007/10/03)
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- EPR Studies on Carboxylic Esters. Part 15. Spin Density Distribution in the Radical Anions of Naphthalenecarboxylic Esters
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Persistent radical anions of naphthalene mono-, di-, and tetracarboxylic esters are generated by in situ electroreduction.The spin density distribution is determined from the proton hfs coupling constants as measured by EPR spectroscopy and is discussed in terms of semi-empirical MO calculations.
- Strey, Karsten,Voes, Juergen
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p. 648 - 682
(2007/10/03)
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- Palladium-catalyzed Desulfonylative Carbonylation of Arylsulfonyl Chlorides in the Presence of Titanium Tetraalkoxides
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The carbonylation of arylsulfonyl chlorides with a catalytic amount of tetrakis(triphenylphosphine)palladium(0) in the presence of a titanium tetraalkoxide gives the corresponding esters along with diaryl disulfides.
- Miura, Masahiro,Itoh, Kenji,Nomura, Masakatsu
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- COBALT-CATALYSED CARBONYLATION OF ARYL HALIDES
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A novel method for carbonylation of aromatic and heteroatomatic halides is described.The catalytic system consists of a combination of alkylcobalt carbonyl complexes, either performed or made "in situ", and bases such as alkoxides, NaOH and K2CO3 in aliphatic alcohols.Under these conditions new anionic cobalt complexes are formed which are characterized by a very high reactivity towards aromatic halides.The latter undergo the carbonylation reaction with high yield under very mild conditions.
- Foa, M.,Francalanci, F.,Bencini, E.,Gardano, A.
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p. 293 - 304
(2007/10/02)
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- PALLADIUM(0) AND RHODIUM(I) CATALYSIS OF THE CARBONYLATION OF UNACTIVATED BROMIDES
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Alkyl, vinyl, and aromatic bromides react with organoborates and carbon monoxide, in the presence of catalytic quantities of 1,5-hexadienerhodium(I) chloride dimer and tetrakis(triphenylphosphine)palladium(0), to give carboxylic esters in good yields.
- Hashem, Khaled E.,Woell, James B.,Alper, Howard
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p. 4879 - 4880
(2007/10/02)
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