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Catalysis in Organic Chemistry Paul Sabatier

Catalysis in Organic Chemistry

Paul Sabatier

Published September 12th 2013
ISBN : 9781230392561
Paperback
170 pages
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1922 edition. Excerpt: ...gives its dihydro-.84MoreThis historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1922 edition. Excerpt: ...gives its dihydro-.84 Colchicine furnishes tetrahydrocolchicine. Egg lecithine, dissolved in absolute alcohol, gives hydrolecithine. Use of Colloidal Platinum 556. Colloidal platinum, prepared according to one of the methods given in Chapter II (67 to 71), can be substituted for colloidal palladium and gives results but little different. According to Paal and Gerum its activity is less.87 According to Fokin, on the contrary, the platinum is three times as active and much more apt to hydrogenate the aromatic nucleus.88 The velocity of the hydrogenation increases rapidly with the amount of the metal employed.9 557. The reduction of niiro-derivatives into amino-is readily carried out with nitrobenzene which gives aniline and with nitroacetophenone which yields aminoacetophenone.0 558. The addition of hydrogen to double and triple bonds takes place easily even with many complex rings. Ethylene is transformed to ethane but less rapidly than by colloidal palladium, the action being proportional to the amount of platinum used.41 Amylene is changed to pentane, oleic and linoleic acids into stearic and crotonic, maleic, aconitic, sorbic, citraconic, and itaconic acids are changed into the corresponding saturated acids, while allyl alcohol gives propyl alcohol.TM Acetylene is reduced to a mixture of ethylene and ethane.42 559. Heptaldehyde, hydrogenated by the aid of colloidal platinum prepared by the germ method, is changed to heptyl alcohol.4 M Skita and Paal, German patent, 230,724, C, 1911 (1), 522. Hoffmann--La Roche & Co., German patent, 279,999, C, 1914 (2),1214. 1 Paal and Oeiime, Berichte, 46, 1297 (1913). Paal and Gerum, Berichte, 40, 2209 (1907) and 41, 2273 (1908). Fokin, J. Russian Phys. Chem. Soc., 40, 276 (1908)....