Intermolecular Methyl Group Exchange and Reversible P–Me Bond Cleavage at Cobalt(III) Dimethyl Halide Species
作者:Hongwei Xu、Paul G. Williard、Wesley H. Bernskoetter
DOI:10.1021/om3009537
日期:2013.2.11
The cobalt(III) dimethyl halide complexes cis,mer-(PMe3)3Co(CH3)2X (X = Cl, I) were found to undergo a degenerate cobalt-to-cobalt transfer of the methyl ligands during isotopic labeling experiments. Extensive mechanisticstudies exclude radical, methyl iodide elimination, and disproportionation/comproportionation pathways for exchange of the methyl groupsbetween metals. A related cobalt(III) dimethyl
The present invention relates to a method for preparing menthone, starting from isopulegol, using specific homogeneous catalysts.
本发明涉及一种使用特定均相催化剂,从异莪茉醇开始制备薄荷醛的方法。
COMPOSITION AND POLYMER
申请人:Asahi Kasei Kabushiki Kaisha
公开号:EP2735581B1
公开(公告)日:2021-07-14
PROCESS FOR PREPARING FORMIC ACID
申请人:Schaub Thomas
公开号:US20100331573A1
公开(公告)日:2010-12-30
Process for preparing formic acid by hydrogenation of carbon dioxide in the presence of a catalyst comprising an element of group 8, 9 or 10 of the Periodic Table, a tertiary amine and a polar solvent at a pressure of from 0.2 to 30 MPa abs and a temperature of from 20 to 200° C. to form two liquid phases, separation of the two liquid phases, wherein the liquid phase (B) enriched with the tertiary amine is recirculated to the hydrogenation reactor and the formic acid/amine adduct from the liquid phase (A) enriched with the formic acid/amine adduct and the polar solvent is thermally dissociated into free formic acid and free tertiary amine in a distillation unit and the tertiary amine liberated in the dissociation and the polar solvent are recirculated to the hydrogenation reactor.
Composition and Polymer
申请人:Nakamura Akitake
公开号:US20140121293A1
公开(公告)日:2014-05-01
Disclosed is a composition comprising (A) at least one compound selected from the group consisting of an ether compound having two or more ether groups, a trivalent phosphorus compound, and a ketone compound, (B) a boron trihalide, and (C) an episulfide compound.