Influence of nitrogen base ligation and hydrogen bonding on the rate constants for oxygen transfer from percarboxylic acids and alkyl hydroperoxides to (meso-tetraphenylporphinato)manganese(III) chloride
Mononuclear Nonheme High-Spin Iron(III)-Acylperoxo Complexes in Olefin Epoxidation and Alkane Hydroxylation Reactions
作者:Bin Wang、Yong-Min Lee、Martin Clémancey、Mi Sook Seo、Ritimukta Sarangi、Jean-Marc Latour、Wonwoo Nam
DOI:10.1021/jacs.5b13500
日期:2016.2.24
and trans-stilbene oxides, respectively. In the epoxidation of cyclohexene, cyclohexene oxide was formed as the major product with a kinetic isotope effect (KIE) value of 1.0, indicating that nonheme iron(III)-acylperoxo complexes prefer C═C epoxidation to allylic C-H bond activation. Olefinepoxidation by chiral iron(III)-acylperoxo complexes afforded epoxides with high enantioselectivity, suggesting
PREPARATION METHODS OF AZOXYSTROBIN AND ITS ANALOGS
申请人:Liu Shangzhong
公开号:US20100179320A1
公开(公告)日:2010-07-15
Preparation method of a compound of general formula (I) comprises the following steps: (1) a compound of general formula (II) reacts with a formylating agent in an aprotic solvent at a temperature between −20° C. and 200° C. in the presence of a Lewis acid, then an organic base is added to promote the reaction to obtain an intermediate product; (2) the above intermediate product reacts with a methylating agent in the presence of an alkali at a temperature between −20° C. and 100° C. to obtain the compound of formula (I).
Trinuclear nickel and cobalt complexes containing unsymmetrical tripodal tetradentate ligands: syntheses, structural, magnetic, and catalytic properties
作者:Jong Won Shin、Ah Rim Jeong、Sun Young Lee、Cheal Kim、Shinya Hayami、Kil Sik Min
DOI:10.1039/c6dt02701f
日期:——
giving rise to nickel(II) and cobalt(II) trinuclearcomplexes, respectively. Trinuclearcomplexes 1 and 2 are isomorphous. In 3, two terminal cobalt(III) units are coordinated to pmidip2− and two CH3CO2−. The terminal units are each linked to a central cobalt(II) cation through two oxygen atoms of pmidip2− and one oxygen atom of a bidentate acetate ion, resulting in a linear trinuclear mixed-valence cobalt
A discrete {Co<sub>4</sub>(μ<sub>3</sub>-OH)<sub>4</sub>}<sup>4+</sup>cluster with an oxygen-rich coordination environment as a catalyst for the epoxidation of various olefins
作者:Sun Young Lee、Namseok Kim、Myoung Mi Lee、Young Dan Jo、Jeong Mi Bae、Min Young Hyun、Sungho Yoon、Cheal Kim
DOI:10.1039/c5dt03422a
日期:——
A tetranuclear Co(ii) complex was active for epoxidation reactions of various olefins, and CoVO and CoIVO species were proposed to be the possible reactive intermediates.
[EN] 1-SUBSTITUTED-3-PYRROLIDINE DERIVATIVES AS MUSCARINIC RECEPTOR ANTAGONISTS<br/>[FR] DERIVES DE 1-SUBSTITUES-3-PYRROLIDINES COMME ANTAGONISTES DE RECEPTEURS MUSCARINIQUES
申请人:RANBAXY LAB LTD
公开号:WO2004056767A1
公开(公告)日:2004-07-08
This invention generally relates to the derivatives of 1 -substituted-3 -pyrroli dines having the structure of Formula (I): The compounds of this invention can function as..muscarinic receptor antagonists, and can be used for the treatment of various diseases of the respiratory, urinary and gastrointestinal systems mediated through muscarinic receptors. The invention also relates to a process for the preparation of the compounds of the present invention. pharmaceutical compositions containing the compounds of the present invention and the methods for treating the diseases mediated through muscarinic receptors.