申请人:Commissariat a L'Energie Atomique et aux Energies Alternatives
公开号:US20170240485A1
公开(公告)日:2017-08-24
The invention relates to a method for (I) producing a carboxylic ester of formula (I). Said method comprises the steps of: a) bringing an organosilane/borane of formula Si or B into contact with CO
2
, in the presence of a catalyst and an electrophilic compound of formula (III), the groups R
1
, R
2
, R
3
, R
4
, R
5
, Y, and M′ being as defined in claim 1; and optionally b) recovering the compound of formula (I) produced.
Mercury(II) halide adducts of esters of 2-pyridinecarboxylic acid. Crystal structures and structural variations within the series [HgCl2(C5H4NCOOR)], RMe, Et, Prn, Pri
different sizes of the substituents. Complexes 1 and 4 adopt polymeric structures. However, the one-dimensional chain in 1 consists of consecutive symmetrically bridged Hg(μ-Cl) 2 Hg dimeric units linked by secondary Hg…Cl interactions while in 4 it is formed by monomeric HgCl 2 L units, LC 5 H 4 NCOOEt, bound by a unique non-plana bis(chloride) asymmetric Hg 2 Cl 2 bridge. In both structures, mercury
摘要通过2-吡啶羧酸酯的加成反应得到了一系列络合物[HgX 2(C 5 H 4 NCOOR)](XCl,Br或I;RMe,Et,Pr n,Pr i)。酸与卤化汞(II)无关,与所用的酯与金属的摩尔比无关。四种氯配合物[HgCl 2(C 5 H 4 NCOOR)],R& Mc(1),Et(4)和Pr n(7)和Pr i(10)的X射线晶体结构具有被确定。在这种密切相关的家族中,可能存在显着的结构变化,这可能是由于取代基的大小不同所致。配合物1和4采用聚合物结构。但是,1中的一维链由连续的对称桥连的Hg(μ-Cl)2 Hg二聚单元组成,它们通过次要Hg…Cl相互作用连接,而在4中则由单体HgCl 2 L单元LC5 H 4形成。 NCOOEt,由唯一的非平面双(氯化物)不对称Hg 2 Cl 2桥键合。在这两种结构中,汞都能达到有效的六配位。7和10的结构分别仅包含离散的中心对称二聚
METHOD FOR PRODUCING CARBONIC ESTER
申请人:MITSUBISHI GAS CHEMICAL COMPANY, INC.
公开号:US20210061749A1
公开(公告)日:2021-03-04
To achieve a method for producing a carbonic ester at a high yield by a simple process while suppressing formation of by-products, for example, a method for producing an aliphatic carbonic ester. The above problem is solved by a method for producing a carbonic ester, the method including a carbonic ester formation reaction in which an alcohol and carbon dioxide are reacted in the presence of an aromatic nitrile compound and a catalyst, wherein the water content in the alcohol used in the carbonic ester formation reaction is 0.10% by mass or less.
Compounds, compositions and methods are provided that are useful in the treatment or prevention of a condition or disorder mediated by PPARγ or PPARδ. In particular, the compounds of the invention modulate the function of PPARγ or PPARδ. The subject methods are particularly useful in the treatment and/or prevention of diabetes, obesity, hypercholesterolemia, rheumatoid arthritis and atherosclerosis.
METHOD FOR PRODUCING CARBONATE ESTERS, AND CATALYTIC STRUCTURE FOR PRODUCING CARBONATE ESTERS
申请人:NIPPON STEEL CORPORATION
公开号:US20210284594A1
公开(公告)日:2021-09-16
Provided are a method for producing carbonate esters, and a catalytic structure for producing carbonate esters, whereby solid catalyst powder formation and detachment are suppressed and superior carbonate ester reaction efficiency is yielded when a catalytic structure constituted by a sufficient quantity of a cerium-oxide-containing solid catalyst supported on a substrate is used. The method for producing carbonate esters includes reacting a monohydric alcohol and carbon dioxide in the presence of a catalytic structure and a hydrating agent. The catalytic structure includes a substrate and a catalytic layer that is formed on at least a portion of the surface of the substrate and contains a solid catalyst and an inorganic binder. The solid catalyst contains cerium oxide. The supported quantity of the solid catalyst is 15 g/m
2
to 200 g/m
2
, inclusive. The inorganic binder contains silica and/or alumina.