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![No Image Yet Plesek and Hermanek/Sodium Hydride Its Use In the Laboratory and in Technology[
acylation, carbalkoxylation, darzens synthesis, haSodium Hydride Its Use In the Laboratory and in Technology].](546ar36.jpg)
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[[postfree546ar36]] PLESEK AND HERMANEK / SODIUM HYDRIDE ITS USE IN THE LABORATORY AND IN TECHNOLOGY ♦ £45 Postfree-By-Airmail Worldwide ♦ [
acylation, carbalkoxylation, darzens synthesis, ha, Sodium Hydride Its Use In the Laboratory and in Technology.]
Published by Iliffe Books Ltd, London, 1968;
185 pages, including tables, bond structures, formulae, references and
subject index; 17.5 X 25cm;
"Very Good+" brown/marble effect/gilt cloth hardback with library
ownership stamp on verso of title page and small 5-digit stamp on
front flyleaf. *** "Sodium hydride has been known since the year 1878.
As a chemical, however, it appeared for the first time on the market
as late as about 1937. This substance, originally interesting from the
viewpoint of theoretical chemistry only, has become, within a
relatively short time, a basic chemical of a new field the chemistry
of complex hydrides. Of considerable technological significance also
was the discovery that sodium hydride is highly effective in the
deoxidation of metal surfaces and in this respect affords one of the
most economic procedures.
The application of sodium hydride in organic chemistry is highly
promising. Although already several hundred successful applications in
this field have been published, sodium hydride continues to be a
substance almost unknown to chemists. Mentions of its use are so
widely scattered in the literature that it is difficult to find them.
Even the entry sodium hydride is referred to in the abstract
literature only if the entire paper is concerned with this agent. This
may be just the reason why sodium hydride has so far been regarded by
organic chemists as a mere laboratory curiosity without great
significance, although a number of findings were summarized in the
reports of Hansleyand Banus, as well as in publications of
manufacturers. The outstanding properties of sodium hydride were not
recognized immediately. Different opinions as to its efficiency were
influenced by the quality of the hydride available to individual
experimenters. In particular, the sodium hydride employed at the
beginning of the fifties was often relatively coarse-grained and of
poor chemical purity and reactivity. Since that time, there have
appeared not only uniform fine dispersions of sodium hydride in liquid
paraffin, but also a dry pulverous hydride with an extraordinarily
large specific surface, either of which is considerably more
effective. At present, it is beyond any doubt that sodium hydride has
become one of the most useful agents, converting even extremely weak
acids into salts, which permits not only their subsequent alkylation
or acylation, but also the condensation of substances with activated
hydrogen on carbon with most diverse types of carbonyl compounds."
*** A decent crisp/clean copy of a scarce item.
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