Hydrocarbons preparation

All hydrocarbons prepared by th -. Wurtz reaction contain small quantities of unsaturated hydrocarbons. These may be removed by shaking repeatedly with 10 pier cent, of the volume of concentrated sulphuric acid until the acid is no longer coloured (or is at most extremely pale yellow) each shaking should be of about 5 minutes duration. The hydrocarbon is washed with water, 10 pier cent sodium carbonate solution, water (twice), and dried with anhydrous magnesium or calcium sulphate. It is then distilled from sodium two distillations are usually necessary... 

ESTCP, Impact of Landfill Closure Designs on Long-Term Natural Attenuation of Chlorinated Hydrocarbons, Prepared by Parsons Engineering for Environmental Security Technology Certification Program, Arlington, VA, March 2002. 

The next four procedures describe the preparation of strained ring systems. Preparation of 3-CHLORO-2-(CHLOROMETHYL)-l-PROPENE provides a facile approach to the olefin required for the synthesis of [1.1.1 [PROPELLANE, one of the most strained hydrocarbons prepared to date. The ready availability of this hydrocarbon should prove particularly useful to those interested in the development of the chemistry of this fascinating compound. Preparation of N-BENZYL-2,3-AZETIDINEDIONE provides an efficient approach to the unadorned a-keto-/3-lactam, a potential... 

MUler, D. F., A. Levy, and W. E. WUson, Jr. Fmal Report on a Study of Motor-Fuel Composition Effects on Aerosol Formation. Part 11. Aerosol Reactivity Study of Hydrocarbons. (Prepared for the American Petrdeum Institute) Columbus. Ohio Battelle Columbus Laboratories, 1972. (64 pp.]... 

Synthetic hydrocarbons, prepared by polymerization of olelinic hvtlrncarhoiis these have good stability when saturated and good viscosity-lempeniture coefficients. 

We have shown that there is a very large number of organic compounds which can be fully deuterated provided the exchange reactions are catalysed by potassium amide. The deuterio-derivatives of benzene, naphthalene, phenanthrene, toluene, xylene, mesitylene, durene, hexamethylbenzene, and other hydrocarbons prepared in this way have been used in studies of the vibrational and electronic spectra in the laboratories of Academician G. S. Landsberg (Landsberg et al., 1954, 1956 Shatenshtein et al., 1958b) (Physical Institute, Academy of Sciences, U.S.S.R., Moscow), and of the Corresponding Member of the Academy of Sciences A. F. Prikhot ko (Broude et al., 1958) (Physics Institute, Academy of Sciences, Ukrainian S.S.R., Kiev). 

There are a few references about designing a small chromatographic system, including all operational units, especially separation column, injection, and detection. Ericson et al. have used a short packed column (effective length 4.5 cm) on a chip [4], Dadoo and Zare [5] have demonstrated high-efficiency separation of five polycyclic aromatic hydrocarbons. Preparation of ultrashort packed and open-tubular capillary columns of lengths 1-2 cm have also been reported by Tsuda et al. [6,7],... 

The two coupling reactions appear to have a common free-radical intermediate. Functional groups already in the aromatic compound, Axil, orient ortbo-para regardless of their nature. The reactions are most valuable for the preparation of biaryls of unequivocal structure when the hydrocarbon, Ar H, is unsubstituted. Good directions are given for the synthesis of p-bromobiphenyl (35%), and the literature of the reaction has been reviewed. Among the hydrocarbons prepared in this way are a- and yS-phenylnaphthalenes, o-, m-, and p-methylbiphenyls and m- and p-terphenyls. Thiophene and pyridine nuclei also have been aryl-ated. ... 

In this chapter are brought together twenty-four reactions for the introduction of a double bond into an organic compound. Olefinic hydrocarbons prepared by these methods ate listed in Tables 2 and 3 Olefinic compounds containing an additional functional group but prepared by these methods ate found in tables in the following chapters. 

Hundreds of references to early literature. Searcher should consult not only volume which relates to specific subject but also indexes of other volumes—volume covering utilization as well as volume on treating for acid treating Some 141 chemicals giving method or methods of preparing each, material and energy requirements, flow sheet of reaction, use pattern, properties, economic aspects, statistics, manufacturers, and plant sites Hydrocarbon preparation... 

API Research Project 42. API Research Project 42 was established in 1940 at The Pennsylvania State College with Frank C. Whitmore as Director, and Leslie C. Beard, Jr., Socony-Vacuum Oil Co., Inc., as Chairman of the Advisory Committee. Its basic objective is to prepare pure hydrocarbons in the lubricating oil range. Further objectives are to develop new synthesis and purification methods for these hydrocarbons, to determine physical properties of the hydrocarbons prepared, and to develop correlations between hydrocarbon structure and physical properties. After the death of Dean Whitmore in 1947, his assistant, Robert W. Schiessler, was appointed Director of the project. Schiessler has proven to be an able and fitting successor to Whitmore, whose work in this field was outstanding. 

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