- Magnesium-catalysed hydroboration of aldehydes and ketones
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The heteroleptic magnesium alkyl complex [CH{C(Me)NAr}2Mg nBu] (Ar = 2,6-iPr2C6H3) is reported as a highly efficient pre-catalyst for the hydroboration of aldehydes and ketones with pinacolborane. The Royal Society of Chemistry 2012.
- Arrowsmith, Merle,Hadlington, Terrance J.,Hill, Michael S.,Kociok-Koehn, Gabriele
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supporting information; experimental part
p. 4567 - 4569
(2012/06/05)
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- PROCESS FOR COPRODUCING DI- AND/OR POLYISOCYANATES AND GLYCOLS
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A process for coproducing di- and/or polyisocyanates and glycols, comprising process stages A, B, C and E for preparing glycols and process stages A, C, D, E, F and G for preparing di- and/or polyisocyanates, which comprises accomplishing the material coupling via the separation of the reaction mixture obtained in process stage A into process stages B and C, by in process stage A, reacting an aqueous alkylene oxide with carbon dioxide to give a reaction mixture comprising alkylene carbonate,hydrolyzing a portion of the alkylene carbonate-comprising reaction mixture obtained in process stage A to glycol in process stage B,dewatering the remaining alkylene carbonate-comprising stream of the reaction mixture from process stage A in process stage C,in process stage D, synthesizing amine by hydrogenating an aromatic nitro compound or a nitrile,in process stage E, transesterifying the dewatered alkylene carbonate-comprising mixture from process stage C with a monohydroxy alcohol to give the corresponding dialkyl carbonate, obtaining glycol as a coproduct,in process stage F, reacting the dialkyl carbonate-comprising reaction mixture obtained in process stage E with the amine obtained in process stage D to a mixture comprising the corresponding mono-, di- and/or polycarbamate, whichin process stage G is cleaved to obtain the corresponding di- and/or polyisocyanate.
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Page/Page column 3
(2012/08/28)
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- FLAVIN DERIVATIVES
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The present invention relates novel flavin derivatives, their use and compositions for use as riboswitch ligands and/or anti-infectives.
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Page/Page column 242
(2011/10/31)
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- Solubility of sodium sulfide in alcohols
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The solubility of sodium sulfide in methanol, ethanol, 2-propanol, 2-methyl-1-propanol, and benzyl alcohol and the acid-base interaction of these compounds have been determined at (20 and 35) °C. The reactions result in the formation of sodium alkoxide and hydrosulfide. The reported values on the solubility of sodium sulfide in alcohols differ essentially from the data described in the literature.
- Kurzin, Alexander V.,Evdokimov, Andrey N.,Golikova, Valerija S.,Pavlova, Olesja S.
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experimental part
p. 4080 - 4081
(2011/05/28)
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- Process for the preparation of 2-chloro-5-chloromethylpyridine, and new intermediates
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A process for the preparation of a 2-chloro-5-chloromethyl-pyridine, of the formula (I) STR1 comprising reacting a 2-alkoxy-5-alkoxymethylpyridine derivative of the formula (II) STR2 in which R1 represents alkyl, with a chlorinating agent, is appropriate, in the presence of a diluent and if appropriate, in the presence of a reaction auxiliary, at a temperature between 0° C. and 200° C.
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