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Binary synthesis

Substituted furan can be prepared by using the Feist-Binary synthesis, which is similar to the Hantszch synthesis of the pyrrole ring. In this reaction, a-haloketones react with 1,3-dicarbonyl compounds in the presence of pyridine to yield substituted furan. [Pg.149]

Another masking strategy, binary synthesis, utilizing four photoprotected amino acids A, B, C, and D, is presented in Figure 3. In this approach, each building block is added after one half of the synthesis area is photolyzed. The left half is illuminated through mask 1 and is then derivatized with building block A, while the other half bears only the protected amino... [Pg.870]

Redhammer GJ, Beran A, Schneider J, Amthauer G, Lottermoser W (2000) Spectroscopic and structural properties of synthetic micas on the annite-siderophyllite binary Synthesis, crystal structure refinements, Mossbauer, and infrared spectroscopy. Am Mineral 85 449-465 Rice CM, Williams JM (1969) A Mossbauer study of biotite weathering. Mineral Mag 37 210-221 Richardson SM (1975) A pink muscovite with reverse pleochroism from Archer s Posf Kenya. Am Mineral 60 73-78... [Pg.347]

Another masking strategy, binary synthesis, utilizing four photoprotected amino acids A, B, C, and D, is presented in Fig. 19. [Pg.58]

Binary synthesis is the formation of a compound from two elements generdform element + element compound... [Pg.90]

Of course the formation of sodium chloride by binary synthesis (see Chapter 3) does involve the formation of chloride ions (arguably the sodium ions are already present in the metallic lattice), but from molecules, not individual atoms. Students may see this reaction demonstrated, but they are unlikely to carry it out (on safety grounds) and neither metallic sodium nor chlorine gas are common laboratory reagents. While the binary synthesis route certainly offers an exciting demonstration of a vigorous reaction, forming sodium chloride by neutralisation followed by evaporation is a much more practical way of producing sodium chloride. [Pg.122]

Synthesis by binary instruction is a curious technique developed in the 1970s at the Institute of Sonology in the Netherlands. This technique is commonly known as non-standard synthesis, but in this book we prefer to use the more specific term - binary synthesis - in order to distinguish it from other methods that could also be classified as non-standard for example, Walsh synthesis and sequential waveform composition (discussed in Chapter 5). [Pg.43]

Muoio R C ef a/1998 DNA-direoted synthesis of binary nanopartiole network materials J. Am. Chem. See. 120 12 674... [Pg.2919]

In spite of the hazardous nature of Sc4N4, this binary selenium nitride has been used for the synthesis of other Se-N compounds, all of which have sulfur analogues (Scheme 5.2). " However, safer alternatives to the use of Sc4N4, e.g., selenium-nitrogen halides and silicon-nitrogen-selenium reagents, are available for the development of Se-N chemistry. ... [Pg.88]

Treatment of the primary product with a zinc salt leads to separation of a-CySj from its coproduct CSj, and multigram amounts of its complexes [NR4]2 [20(0-0385)2] and of the eorresponding -isomer s eomplexes afford convenient starting points for the synthesis of molecular binary sulfides as indicated below. [Pg.315]

Tantalum and niobium are added, in the form of carbides, to cemented carbide compositions used in the production of cutting tools. Pure oxides are widely used in the optical industiy as additives and deposits, and in organic synthesis processes as catalysts and promoters [12, 13]. Binary and more complex oxide compounds based on tantalum and niobium form a huge family of ferroelectric materials that have high Curie temperatures, high dielectric permittivity, and piezoelectric, pyroelectric and non-linear optical properties [14-17]. Compounds of this class are used in the production of energy transformers, quantum electronics, piezoelectrics, acoustics, and so on. Two of... [Pg.1]

Predominant formation of either complex fluoride or complex oxyfluoride depends on the interaction rates ratio of processes (25) and (26). The relatively high interaction rates of (27) and (28) lead to the synthesis of simple fluorides or oxyfluorides, respectively. With the availability of two or more cations in the system, the ammonium complex fluorometalates interact forming stable binary fluorides or oxyfluorides or mixtures thereof. [Pg.40]

Table 43. Binary systems that can be used for the synthesis of MeX, MeX2 and MeX type compounds (Me = A + B X = O + F). Table 43. Binary systems that can be used for the synthesis of MeX, MeX2 and MeX type compounds (Me = A + B X = O + F).
Another important consequence of the limitations concerning cross-addition is that anionic polymerization is not suited for the synthesis of random copolymers. If a mixture of two anionically polymerizable monomers is reacted with an initiator, the most electrophilic monomer will polymerize while the other is left almost untouched 30). In other words, a general feature of anionic binary copolymerization is that one of the reactivity ratios is extremely high while the other is close to zero. [Pg.151]

Low-temperature solid-state synthesis is preferred in most cases, where appropriate, for obvious reasons such as energy and cost economy and process safety or for critical concerns regarding the accessibility of compounds that are stable only at low temperatures or non-equilibrium phases, i.e., compounds thermodynamically unstable with respect to the obtained phase (e.g., a ternary instead of binary phase). The use of low-temperature eutectics as solvents for the reactants, hydrothermal growth... [Pg.26]

Low-temperature solvents are not readily available for many refractory compounds and semiconductors of interest. Molten salt electrolysis is utilized in many instances, as for the synthesis and deposition of elemental materials such as Al, Si, and also a wide variety of binary and ternary compounds such as borides, carbides, silicides, phosphides, arsenides, and sulfides, and the semiconductors SiC, GaAs, and GaP and InP [16], A few available reports regarding the metal chalcogenides examined in this chapter will be addressed in the respective sections. Let us note here that halide fluxes provide a good reaction medium for the crystal growth of refractory compounds. A wide spectrum of alkali and alkaline earth halides provides... [Pg.83]

In the following, selected results will be presented on the conventional electrochemical synthesis of metal chalcogenide binary and ternary systems, conducted by employing variants of the methods outlined in the previous sections. A brief account of chemical bath deposition principles exemplified will be addressed at the end of this chapter, as being closely related to electrochemical deposition of thin films. [Pg.88]

Fe, and B SI, Tl, Th, and Ce). The transforaed materials exhibit high specific activity In methanation, ammonia synthesis, and ethylene hydrogenation reactions. The similarity between the industrial methanation catalysts and catalysts obtained by decomposition of various Intermetallics Is striking. Most catalysts obtained by decomposition of a binary alloy Involve an associative combination of... [Pg.305]


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See also in sourсe #XX -- [ Pg.287 ]

See also in sourсe #XX -- [ Pg.90 ]




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Feist-Binary furan synthesis

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