Download e-book for kindle: A Concise Text-book of Organic Chemistry by C. G. Lyons, S. McLintock, Nora H. Lumb

By C. G. Lyons, S. McLintock, Nora H. Lumb

ISBN-10: 0080106560

ISBN-13: 9780080106564

A Concise Text-Book of natural Chemistry is a convenient advisor for chemistry scholars getting ready for complex point certificate. the character of natural chemistry, in comparison with that of inorganic chemistry, is essentially the chemistry of carbon. The publication makes a speciality of the preparations and adjustments of the atoms contained in the carbon molecules. The molecular formulation of natural compounds are hence studied, together with alkanes and their derivatives often called aliphatic or fatty acids, in addition to the hydrocarbons of the benzene sequence and derivatives often called the fragrant compounds. The aliphatic amines as derivatives of ammonia as a result of the substitution of the hydrogen atoms through alkyl teams are defined. The formulation for methane, even supposing at the moment is handy for normal reasons, is proven to be no longer a real consultant of the particular association within which 4 H radicals are grouped round the carbon atom. Castor oil, linseed, and different drying oils also are tested when it comes to their glyceride (of different lengthy chain unsaturated acids) content material. Carbohydrates, divided as monosaccharides, polysaccharides, and glycosides, are mentioned as to their empirical composition. the various tools and reagents for synthesizing natural compounds are defined, utilizing the straightforward aliphatic natural compounds as an instance. The fragrant sequence of natural compounds, similar to the benzene sequence of hydrocarbons, and the fragrant sulfonic acids, phenols, and ethers are then analyzed. This booklet is appropriate for college students of natural chemistry and for these getting ready for assessments within the common certificates of schooling and for the normal nationwide certificates. Readers with regards to agricultural, clinical, pharmaceutical, and technological and technical classes can locate this consultant proper.

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Acetylation, p. 94). CH3COCI + C2H5OH = CH3COOC2H5 + HCl 46 A CONCISE TEXT-BOOK OF O R G A N I C C H E M I S T R Y (5) Dehydration to ethers and ethylene. Alcohols react with dehydrating agents to form either ethers or ethylenic compounds. With ethyl alcohol and concentrated sulphuric acid, the products are diethyl ether at 140°C with the alcohol in excess, or ethylene at 170°C with excess sulphuric acid. CH3CH2OH - CHgiCHg + H2O These reactions are the basis of the laboratory preparations of ether and ethylene and the manufacturing process for ether.

The initial product is unstable since it is a general rule that two hydroxyl groups attached to the same carbon atom do not form a stable system. e. a carbon atom linked to an oxygen atom by a double bond. \ \ C ^ -> ^OH / ^ ^ \ ^OH ^ C / C:0 Further oxidation is possible if the carbon atom doubly linked to oxygen is also linked to hydrogen, for the C — Η link can be converted to C-OH. 48 A CONCISE TEXT-BOOK OF O R G A N I C C H E M I S T R Y Primary alcohols are oxidized in two stages, first to aldeliydes (as by potassium dichromate in the presence of dilute sulphuric acid) and then to acids (as by potassium permanganate and dilute sulphuric acid).

C2H5-O-C2H5 Diethyl ether (simple ether) CH3-O-C2H5 Methyl ethyl ether (mixed ether) Isomerism of Ethers (Metamerism) Diethyl ether (CgHg—O—C2H5) and methyl propyl ether (CH3—O—C3H7) are isomeric. g. ketones, esters). It is sometimes called metamerism. T H E ALIPHATIC ALCOHOLS A N D E T H E R S 57 Preparation of Ethers The two most important methods of preparation of ethers are: (1) By the dehydration of alcohols. Alcohols react with con­ centrated sulphuric acid under appropriate conditions to give ethers (cf.

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A Concise Text-book of Organic Chemistry by C. G. Lyons, S. McLintock, Nora H. Lumb

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