搜索结果: 1-13 共查到“理学 ethers”相关记录13条 . 查询时间(0.093 秒)
云南师范大学化学化工学院有机化学课件Chapter11 Ethers。
Monitoring and Dispersion Modeling of Polybrominated Diphenyl Ethers (PBDEs) in the Ambient Air of Two Municipal Solid Waste Incinerators and a Coal-fired Power Plant
Polybrominated diphenyl ethers (PBDEs) Municipal solid waste incinerators Coal-fired power plant Stack flue gases Dispersion
2016/3/28
The concentration of polybrominated diphenyl ethers (PBDEs) in the ambient air of two municipal solid waste
incinerators (MSWIs) and one coal-fired power plant (TPP) were determined. Along with the s...
Enantioselective complexation of chiral lariat crown ethers and chiral primary alkylammonium perchlorates
Chiral lariat crown ethers enantioselectivity complexation properties molecular recognition NMR titration
2011/4/6
In order to investigate the enantiomeric recognition abilities toward 2 chiral alkylammonium perchlorates (AmI, AmII) by 1H-NMR titration method in CDCl3, 4 chiral lariat ethers 8-11 with a (p-methoxy...
An efficient and green approach for the synthesis of vinyl aryl ethers in the presence of guanidine hydrochloride
Guanidine hydrochloride dialkyl acetylenedicarboxylates vinyl aryl ether
2010/12/29
A stereoselective procedure for vinyl aryl ether bond formation by direct coupling of dialkyl acetylenedicarboxylates and substituted phenols or naphthols under mild reaction conditions has been devel...
An efficient and green approach for the synthesis of vinyl aryl ethers in the presence of guanidine hydrochloride
Guanidine hydrochloride dialkyl acetylenedicarboxylates vinyl aryl ether O-vinylation water solvent
2010/12/20
A stereoselective procedure for vinyl aryl ether bond formation by direct coupling of dialkyl acetylenedicarboxylates and substituted phenols or naphthols under mild reaction conditions has been devel...
Formation of secondary organic aerosol and oligomers from the ozonolysis of enol ethers
secondary organic aerosol oligomers ozonolysis enol ethers
2009/1/16
Formation of secondary organic aerosol has been observed in the gas phase ozonolysis of a series of enol ethers, among them several alkyl vinyl ethers (AVE, ROCH=CH2), such as ethyl, propyl, n-butyl, ...
High Yielding Oxidative Deprotection of Silyl and Pyranyl Ethers to Their Corresponding Carbonyl Compounds with Strontium Manganate in the Presence of Aluminium Chloride in Solution and Under Solvent-Free Conditions
Strontium manganate aluminium chloride solvent-free conditions oxidative deprotection tetrahydropyranyl ethers
2010/4/13
Strontium manganate (SrMnO4) in the presence of aluminium chloride (AlCl3) is an efficient reagent for the high yielding oxidative deprotection of aromatic and aliphatic silyl and pyranyl ethers into ...
Oligomer formation during gas-phase ozonolysis of small alkenes and enol ethers: new evidence for the central role of the Criegee Intermediate as oligomer chain unit
oligomer formation gas-phase ozonolysis small alkenes enol ethers
2008/11/7
An important fraction of secondary organic aerosol (SOA) formed by atmospheric oxidation of diverse volatile organic compounds (VOC) has recently been shown to consist of high-molecular weight oligome...
Di-O-methyl ethers of (-)-agatharesinol,(-)-sugiresinol, (+)-nyasol和(+)-tetrahydronyasol的全合成研究
合成 di-O合成 di-O-methylethers of (-)-agatharesinol (-)-sugiresinol (+)-nyasol (+)-tetrahydronyasol
2007/12/19
摘要 本文报道了以一种新的方法高产率合成了di-O-methyl ethers of (-)-agatharesinol(1b), ,(-)-sugiresinol(2b), (+)-nyasol (3b)and(+)-tetrahydronyasol (4). 同时，通过首次对(+)-3b 和 (+)-4的合成对(+)-3a的绝对构型进行了确证.
PVC-Membrane Electrodes Based on 18-Crown-6 and Dibenzo-18-Crown-6 Ethers for Determination of Silver
Ag+ determination silver electrode PVC-membrane electrode
2010/4/16
PVC-membrane electrodes for Ag+ based on either 18-crown-6 (I) or di-benzo-18-crown-6 ether (II) were applied for the first time. The effect of solvent mediator on the electrode performance was discus...
A New and Convenient Method of Generating Alkyl Isocyanates from Alcohols, Thiols, and Trimethylsilyl Ethers Using a 2,4,6-Trichloro[1,3,5] Triazine/n-Bu4NOCN
2,4,6-Trichloro[1,3,5] triazine (TT) alcohol thiol trimethylsilyl ether alkyl isocyanate
2010/4/19
Alkyl isocyanates are prepared in good to excellent yields by treatment of alcohols, thiols, and trimethylsilyl ethers with 2,4,6-trichloro[1,3,5] triazine/n-Bu4NOCN in acetonitrile. This method is hi...
Investigation of the Cation Complexation by Macrocyclic Ethers using 13C NMR Spin--Lattice Dipolar Relaxation Time Measurements
Investigation the Cation Complexation Macrocyclic Ethers using 13C NMR Spin--Lattice Dipolar Relaxation
2010/4/19
The binding constants (Ka) of [18]crown-6 ether with Na+ , K+, and Ba2+ thiocyanates were determined by 13C{1H} NMR spin--lattice dipolar relaxation time measurements. The observed relaxation times (T...
Construction and Characterization of Indium Liquid Ion Selective Electrodes Based on Crown Ethers in a PVC Matrix Membrane
Indium electrodes crown compounds selectivity measurements optode measurements
2010/4/19
Several indium ion selective electrodes were constructed based on 15-crown-5 (15C5), dicyclohexano-18-crown-6 (DCH18C6) and dibenzo-24-crown-8 (DB24C8) as sensors and di-octyl phenyl phosphonate (DOPP...