Alcohols from ozonolysis products of unsaturated fatty esters

Autor:	C. M. Thierfelder, John C Cowan, E. H. Pryde
Rok vydání:	1976
Předmět:	chemistry.chemical_classification Ozonolysis Chemistry General Chemical Engineering Organic Chemistry Noyori asymmetric hydrogenation chemistry.chemical_element engineering.material Catalysis Hydrolysis Nickel Yield (chemistry) engineering Organic chemistry Noble metal Alkyl
Zdroj:	Journal of the American Oil Chemists Society. 53:90-93
ISSN:	1558-9331 0003-021X
DOI:	10.1007/bf02635955
Popis:	1-Nonanol and alkyl 9-hydroxynonanoates were more readily prepared by hydrogenation of the respective isolated aldehydes than by direct hydrogenation of products from reductive ozonolysis of oleate esters. Hydrogenation with nickel catalysts and aprotic solvents reduced the isolated aldehydes in good yield with a minimum of side reactions. Although the noble metal catalyst and hydroxylic solvent systems frequently used in similar reductions were also effective, they required a promoter that fortuitously catalyzed hydrolysis of acetals that formed during hydrogenation. Direct hydrogenation of the ozonolysis products resulted in side reactions and a mixture of products difficult to separate.
Databáze:	OpenAIRE
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