An efficient method for selective oxidation of 1,2-diols in water catalyzed by Me2SnCl2
作者:Julius M. William、Masami Kuriyama、Osamu Onomura
DOI:10.1039/c3ra42754d
日期:——
Dimethyltin(IV)dichloride-catalyzed selective oxidation of 1,2-diols in water was achieved using dibromoisocyanuric acid (DBI) or Br2 as oxidants. The catalyst activates the 1,2-diol moiety through the formation of stannylene acetal in addition to enhancing selectivity. Various cyclic and acyclic 1,2-diol substrates have been selectively oxidized affording α-hydroxyketones in good to excellent yields. This method
[EN] METHODS FOR PREPARING FLUOROALKYL ARYLSULFINYL COMPOUNDS AND FLUORINATED COMPOUNDS THERETO<br/>[FR] PROCÉDÉS DE PRÉPARATION DE COMPOSÉS FLUOROALKYLE ARYLSULFINYLÉS ET COMPOSÉS FLUORÉS APPARENTÉS
申请人:IM & T RES INC
公开号:WO2010022001A1
公开(公告)日:2010-02-25
Novel preparative methods for fluoroalkyl arylsulfinyl compounds are disclosed. Fluorinated compounds as useful fluorinated compounds, intermediates, or builing blocks are disclosed. Useful applications of the fluoroalkyl arylsulfinyl compounds are shown.
Cooperative Activation of Cobalt-Salen Complexes for Epoxide Hydration Promoted on Flexible Porous Organic Frameworks
作者:Mingmei Zhong、He Li、Jian Chen、Lin Tao、Can Li、Qihua Yang
DOI:10.1002/chem.201702810
日期:2017.8.25
modes of enzymes. The POFs exhibit second‐order rate dependence on Co(salen) concentration in the network and afford much higher TOF (3300 versus 2670 h−1) than the homogeneous counterpart in the hydration of propylene epoxide. POFs with a flexible network thus not only facilitate but also enhance the cooperation of nearby Co(salen). Moreover, POFs could catalyze oversized substrates, have a wide substrate
开发具有多个活性位点协同作用的固体催化剂对于有效的化学转化是理想的。然而,大多数固体催化剂是刚性的,并阻碍了它们在空间上隔离的活性位之间的合作。已经成功地合成了具有集成的Co(salen)作为活性位点的两个灵活的多孔有机框架(POF),以模仿酶的协同模式。POF表现出对网络中Co(salen)浓度的二阶速率依赖性,并提供更高的TOF(3300对2670 h -1)比环氧丙烷的水合中的均相对应物。因此,具有灵活网络的POF不仅促进而且增强了附近Co(salen)的合作。此外,POF可以催化超大尺寸的基材,具有宽范围的基材,并显示出高稳定性。
IMMUNITY INDUCER FOR SACCHARIDE ANTIGENS
申请人:NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
公开号:US20160074522A1
公开(公告)日:2016-03-17
The present invention provides an immunity inducer and an immunity inducing method using same. The immunity inducer has an immunopotentiation effect on any target oligosaccharide antigen, in particular oligosaccharide antigens included in mammal-derived glycoprotein N-linked sugar chains; is capable of providing a monoclonal antibody having high specificity to and affinity with target oligosaccharide antigens; and has as an effective component thereof a glycolipid including a target oligosaccharide antigen (R) and indicated by general formula (2), or a salt thereof. General formula (2): R—Z—Y—CH(NH—CO—(CH
2
)
n1
—CH
3
)—(CH
2
)
n2
—CH
3
(in the formula, R indicates a straight-chain or branched oligosaccharide comprising 2-30 of at least one type of monosaccharide. Z indicates a single bond, O, S or NH, a linker bound to thiomethyl, amino methylated sugar alcohol. Y indicates —(CH
2
)
m
—. n1 indicates an integer of 2-40, n2 indicates an integer of 1-27, and m indicates an integer of 1-30).
Borated phosphonates as lubricant and fuel additives
申请人:Mobil Oil Corporation
公开号:US04522629A1
公开(公告)日:1985-06-11
Compounds made by reacting a vicinal diol with a hydrocarbyl phosphite and then borating the resulting product have been found to be effective friction reducers when added to lubricants or fuels. This is true in any use of lubricants, but is especially true when they are used in internal combustion engines. In the latter case, the fuels used, when they contain the additive, aid in the reduction of friction in the engine.