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Deuterated

Fig. XI-7. Volume fraction profile of 280,000-molecular-weight poly(ethylene oxide) adsorbed onto deuterated polystyrene latex at a surface density of 1.21 mg/m and suspended in D2O, from Ref. 70. Fig. XI-7. Volume fraction profile of 280,000-molecular-weight poly(ethylene oxide) adsorbed onto deuterated polystyrene latex at a surface density of 1.21 mg/m and suspended in D2O, from Ref. 70.
A unique but widely studied polymeric LB system are the polyglutamates or hairy rod polymers. These polymers have a hydrophilic rod of helical polyglutamate with hydrophobic alkyl side chains. Their rigidity and amphiphilic-ity imparts order (lyotropic and thermotropic) in LB films and they take on a F-type stmcture such as that illustrated in Fig. XV-16 [182]. These LB films are useful for waveguides, photoresists, and chemical sensors. LB films of these polymers are very thermally stable, as was indicated by the lack of interdiffusion up to 414 K shown by neutron reflectivity of alternating hydrogenated and deuterated layers [183]. AFM measurements have shown that these films take on different stmctures if directly deposited onto silicon or onto LB films of cadmium arachidate [184]. [Pg.561]

Nordhoim S 1989 Photoisomerization of stiibene—a theoreticai study of deuteration shifts and iimited internai vibrationai redistribution Chem. Phys. 137 109-20... [Pg.867]

Two of the most important functions in the application of neutron scattering are the use of deuterium labelling for the study of molecular confomiation in the bulk state and the use of deuterium solvent in polymer solutions. In the following, we will consider several different applications of die general fomuda to deuteration. [Pg.1412]

Let us first consider two identical polymers, one deuterated and the other not, in a melt or a glassy state. The two polymers (degree of polymerization d) differ from each other only by scadermg lengths and b. If the total number of molecules is N, x is the volume fraction of the deuterated species x = N- / N, with Aq -t = A). According to equation (B1.9.116), we obtain... [Pg.1412]

Let us take two polymers (one deuterated and one hydrogenated) and dissolve them in a solvent (or another polymer) having a scattering length b. The coherent scattered intensity can be derived from (B 1.9.117), which gives... [Pg.1413]

Benzyl bromide can be converted into ethylbenzene (731) by the reaction of Me4Sn. The use of HMPA as a solvent is important. Overall inversion of configuration takes place at the chiral center of deuterated benzyl bro-mide[598]. The cyanomethyiation[599] and methoxymethyiation[600] of aromatic rings are carried out by the reaction of cyanomethyltributyltin (732) and methoxymethyltributyltin. [Pg.237]

Hydrogenolysis of aryl and alkenyl halides and triflates proceeds by the treatment with various hydride sources. The reaction can be explained by the transmetallation with hydride to form palladium hydride, which undergoes reductive elimination. Several boro hydrides are used for this purpose[680], Deuteration of aromatic rings is possible by the reaction of aryl chlorides with NaBD4681]. [Pg.248]

Highly regio- and stereoselective 4a-deuteration in steroids is possible by the hydrogenolysis of the cyclic allylic /3-carbonate 628 with NaBD4. the extent of 6a-deuteration is only 3%[393],... [Pg.376]

The mechanism of the PdCh-catalyzed Cope rearrangement has been studied by use of the partially deuterated 1.5-diene 53[46], The coordination of Pd(II) activates the alkene, and cyclization (carbopalladation) takes place to... [Pg.534]

Infrared absorption properties of 2-aminothiazole were reported with those of 52 other thiazoles (113). N-Deuterated 2-aminothiazole and 2-amino-4-methylthiazo e were submitted to intensive infrared investigations. All the assignments were performed using gas-phase studies of the shape of the vibration-rotation bands, dichroism, isotopic substitution, and separation of frequencies related to H-bonded and free species (115). With its ten atoms, this compound has 24 fundamental vibrations 18 for the skeleton and 6 for NHo. For the skeleton (Cj symmetry) 13 in-plane vibrations of A symmetry (2v(- h, 26c-h- Irc-N- and 7o)r .cieu.J and... [Pg.23]

Hydrogen exchange, in thiazole, especially deuteration, has been quantitatively investigated (379,380), but the mechanism of the reaction carried out at acidic or neutral pH corresponds to a protonation-deprotonation process (380), different from electrophilic substitution and is discussed in section I.3.E. [Pg.106]

More recently, the use of phase-transfer catalysis to promote the deproto-deuteration of thiazole and various alkylthiazoles enabled Spil-lane and Dou (435) to increase considerably the rate of H/D exchange and afforded the possibility of labeling alkylthiazoles in preparative quantities and at positions otherwise difficult to label. [Pg.119]

A primary isotope effect /ch/ d of 6.4 (extrapolated for 35 C) is observed for the metalation and the methylation of 171b when the C-5 position is deuterated. This value is in excellent agreement with the primary isotope effect of 6.6 reported for the metalation of thiophene (392) and it confirms that the rate-determining step is the abstraction by the base of the acidic proton. [Pg.124]

Reactions with substituted aryl- and alkylthiazoles and deuterated thiazoles (98) gave evidence of the general pathway of the rearrangement (Scheme 2). [Pg.376]

The general mechanism of the rearrangement of aryl and diaryl-thiazoles seems to exclude the zwitterion route. Instead it takes place through bending of thiazoles bonds (98.213). Moreover, tricyclic sul-fonium cation intermediates, after irradiation of deuterated phenyl-thiazoles, have been suggested by several workers (98). [Pg.378]

Deuterolysis of the organolithium compounds was used to characterize the three deuterated thiazoles corresponding to the three lithium derivatives. [Pg.378]

The 2-bromothiazole can also be reduced to thiazole by zinc (18) in CH3COOH, or by electrolytic reduction (68). The deuterated thiazoles can also be obtained starting from the corresponding halogenothiazoles, by Zn/Cu in CH3COOD (18). [Pg.573]

Table 7.48 Solvent Positions of Residual Protons in Incompletely Deuterated... Table 7.48 Solvent Positions of Residual Protons in Incompletely Deuterated...
Table 7.60 Carbon-13 Chemical Shifts of Deuterated Solvents 7.110... Table 7.60 Carbon-13 Chemical Shifts of Deuterated Solvents 7.110...

See other pages where Deuterated is mentioned: [Pg.1413]    [Pg.1414]    [Pg.2085]    [Pg.2553]    [Pg.2554]    [Pg.276]    [Pg.124]    [Pg.80]    [Pg.158]    [Pg.161]    [Pg.101]    [Pg.424]    [Pg.92]    [Pg.57]    [Pg.117]    [Pg.347]    [Pg.573]    [Pg.646]   
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See also in sourсe #XX -- [ Pg.276 , Pg.278 ]

See also in sourсe #XX -- [ Pg.5 , Pg.17 , Pg.25 ]

See also in sourсe #XX -- [ Pg.36 , Pg.143 ]

See also in sourсe #XX -- [ Pg.298 ]




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1.2.3- Thiadiazoles deuteration

Acetic acid, deuterated

Acetic deuterated

Acetone, deuterated

Acetonitrile deuterated

Acetophenone deuterated

Acetophenone deuteration

Acetylene, deuterated

Alcohols deuterated

Aldehydes deuterated

Aldehydes with deuterated alpine-borane

Alkanes deuterated

Allyl compounds, deuterated

Amino acid leucine, deuterated

Ammonium deuterated

Analogs, deuterated

Anthracene deuterated

Arenes deuteration

Benzene deuterated

Benzene deuteration

Benzoic acid deuterated

Benzyl deuteration

Blends of deuterated polystyrene

Boiling points deuterated solvents

Butene, deuteration

Cannabinoid deuterated analogs

Carbon-13 chemical shifts of deuterated solvents

Carboxylic acids deuterated, preparation

Catalysts deuteration catalyst

Catalytic deuteration

Cellulose deuterated

Chirally deuterated glucose

Cholesterol deuteration

Comparative deuterated, synthesis

Corroles deuteration

Covalent deuteration

Cyclohexene deuterated

Cyclopentane deuteration

Delta deuterated fraction

Detectors, infrared deuterated triglycine

Deuterated Deuterium-exchange experiments

Deuterated L-alanine-doped

Deuterated NMR solvents

Deuterated PB

Deuterated PEO

Deuterated PS latex

Deuterated amino acids

Deuterated ammonias

Deuterated analogs cannabinoids

Deuterated anilines

Deuterated backbone

Deuterated chlorine compounds

Deuterated chloroform

Deuterated compounds

Deuterated compounds Acetic acid

Deuterated compounds Acetone

Deuterated compounds Acetonitrile

Deuterated compounds Benzene

Deuterated compounds Chloroform

Deuterated compounds Deuterium oxide

Deuterated compounds Dimethyl sulfoxide

Deuterated compounds Ethanol

Deuterated compounds Hydrogen chloride

Deuterated compounds Methanol

Deuterated compounds Methylene chloride

Deuterated compounds Pyridine

Deuterated compounds Sulfuric acid

Deuterated compounds Trifluoroacetic acid

Deuterated compounds Water

Deuterated compounds hydrogen bonds

Deuterated compounds impurity

Deuterated cyclic

Deuterated cyclic PDMS

Deuterated cyclic poly

Deuterated cyclohexenes

Deuterated cyclopropanes

Deuterated depth profiles

Deuterated dimethyl sulfoxide, solvent

Deuterated employing

Deuterated ethyl benzene

Deuterated glycerol

Deuterated hexane

Deuterated homologs

Deuterated hydrocarbon films

Deuterated hydrocarbon monolayers

Deuterated hydroperoxide

Deuterated internal standards

Deuterated ionic liquid

Deuterated isopropanols

Deuterated isotopomers

Deuterated isotopomers of methane

Deuterated ligands

Deuterated media

Deuterated mobile phase

Deuterated model compounds

Deuterated molecules (

Deuterated nitrobenzene

Deuterated nitromethane

Deuterated olefins

Deuterated paraffins

Deuterated phase separation

Deuterated phenol

Deuterated phenol derivatives

Deuterated phenylethanes

Deuterated photolysis

Deuterated plant extracts

Deuterated poly

Deuterated poly(butadiene

Deuterated poly(ethylene

Deuterated poly(methyl

Deuterated poly(styrene

Deuterated polyester urethanes

Deuterated polymer blend films

Deuterated polymer chains

Deuterated polymers

Deuterated polystyrene film

Deuterated polystyrene, aggregation

Deuterated propylene glycol

Deuterated propylene oxide

Deuterated proteins

Deuterated pyrazoles

Deuterated pyrolysis

Deuterated radiolysis

Deuterated reactants

Deuterated salt

Deuterated solvents

Deuterated solvents Deuterium isotope effect

Deuterated solvents changing

Deuterated solvents properties

Deuterated solvents proton chemical shifts

Deuterated solvents, chemical shifts

Deuterated solvents, for NMR

Deuterated styrene monomer

Deuterated sugars

Deuterated synthesis

Deuterated systems

Deuterated tetrahydrofuran

Deuterated thiols

Deuterated trifluoroacetic acid

Deuterated triglycine sulfate

Deuterated triglycine sulfate detector

Deuterated triglycine sulfate pyroelectric detector

Deuterated water

Deuterated water production

Deuterated, electron spin resonance

Deuterated, nuclear magnetic resonance spectrum

Deuterated, use

Deuterating agent

Deuteration

Deuteration TROSY

Deuteration additions

Deuteration amino acids

Deuteration and fluorination

Deuteration asymmetric hydrogenation

Deuteration by Electrochemical reduction

Deuteration enantioselective

Deuteration exchange experiments

Deuteration experiment

Deuteration fractional

Deuteration hydrogenation

Deuteration norbornene

Deuteration of a diterpene

Deuteration of arenes

Deuteration of double bonds

Deuteration of estradiol

Deuteration of olefins

Deuteration quadrupolar coupling

Deuteration random fractional

Deuteration reaction

Deuteration studies

Deuteration with homogeneous catalysts

Deuteration, activated

Deuteration, alcohols

Deuteration, cellulose

Deuteration, cellulose samples

Deuteration, detection by mass spectru

Deuteration, effect

Deuteration, of phenol

Deuteration, oxazole reactions

Deuteration, polysaccharide

Deuteration, selective

Deuteration/deuterium

Deuteration—continued

Deuteration—continued studies

Deuterium deuterated hydrocarbons

Deuterized groups

Dihydrogen deuterated

Effects of deuteration

Ethanol deuterated

Ethylene deuterated

Fatty acid Isomers, Deuterated

Fatty acids deuteration

Fluorinated-deuterated PMMA

Fluorinated-deuterated PMMA waveguide

Fractionation of deuterated cyclic

G Chemical Shifts and Multiplicities of Residual Protons in Commercially Available Deuterated Solvents

Glycines, deuterated

Guanine, deuterated

Heavy Atom, Deuterated

Heavy/deuterated water

Heterogeneous catalytic deuteration

Hexanes, partially deuterated

Homogeneous catalytic deuteration

Hydrogen bonding and deuteration

Hydrogen deuterated

Hydroxy deuterated

Imidazole derivatives deuterated

Infrared spectrum, deuterated water

Isotopic labeling deuteration

Jump motion deuteration

Ketones deuteration

Labeling techniques deuteration

Latexes deuterated

Liposome deuterated

Lithium methyl deuterated derivative

Mechanism of, deuteration

Melting points deuterated solvents

Methane deuterated

Methanol deuterated

Methanol, and deuterated

Methionine deuterated

Methyl methacrylate, deuterated

Methyl methacrylate, deuterated polymerization

Mono-Deuteration of Bis(ethylthio)methane

Monosaccharides deuterated

NMR Spectra of Common Deuterated Solvents

Neutron deuteration method

Nuclear magnetic resonance deuterated solvents

Of deuterated compounds

Olefins deuteration

Organic acids, deuterated

Partial Deuteration Experiment

Partial deuteration

Partially deuterated polymers

Per-deuteration

Phenol deuteration with

Phenylalanine deuterated

Polybutadiene deuterated

Polycarbonate deuterated

Polyester urethane, deuteration

Polyethylene deuterated

Polyethylene deuterated, melting temperature

Polymer blends deuterated components

Polymerization of deuterated

Polypropylene, deuterated

Polystyrene deuterated

Polystyrene, deuterated reflectivity measurements

Polystyrene, deuterated tension

Polystyrene, deuterated/dioctyl phthalat

Preparation deuterated compounds using

Pressure effects for deuterated organic acids

Propylene deuterated

Proteins deuteration

Protonation and Deuteration

Pyrrole deuteration

Pyrroles deuteration

Quinoxaline deuteration

Radical deuteration

Radical substitution deuteration

Radiolabeled deuteration

Raney deuterated

Raney nickel deuteration catalyst

Residual protons in incompletely deuterated solvents

Rhodium 5]3 + , deuteration

Sample preparation deuterated solvent

Side specifically deuterated

Small per-deuterated

Small per-deuterated dimethylsiloxanes

Solid-state deuteration

Solvent deuteration

Solvents incompletely deuterated

Spectral deuteration

Spectroscopy deuterated domain structures

Stereospecific deuteration

Styrene deuterated

Subject deuterated

Synthesis of deuterated compounds

Transfer deuteration

Transport deuterated molecule

Triphenylene, deuteration

Uracil, deuterated

Using Deuterated Probes

With deuterated methacrylic

Xylose deuterated

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