PURPOSE:To prepare an aldehyde and/or ketone, in high yield, by the dehydrogenation of an alcohol using a synthetic mica as a novel dehydrogenation catalyst. CONSTITUTION:The aldehyde (e.g. formaldehyde) and/or ketone (e.g. acetone) can be prepared by the dehydrogenation of an alcohol, ...
respectively, having a smaller number of carbon atoms than those to be prepared, by one or more condensation reactions involving the use of hydrogen, by a process in which the primary or secondary alcohol and/or the aldehyde or ketone is (are) contacted at a temperature of at least 200 C...
The method provides a versatile and many other α-dehydro Chiti warbler for large scale production (DHH), β- unsaturated or α- bromo ketone or aldehyde practical and efficient process to avoid the use of a noble metal compound. 展开 ...
Process for the preparation of aldehydic or ketonic compounds, and aldehydes and ketones obtained by this process. 1. Process for the production of organic aldehyde or ketone compounds on the basis of olefins characterized in that an oxidising cleavage of the double bond of the olefin by means...
1. Process for the production of organic aldehyde or ketone compounds on the basis of olefins characterized in that an oxidising cleavage of the double bond of the olefin by means of a coordination complex of a ligand and a peroxo compou... S Campestrini,FD Furia,G Modena,... - EP 被...
Synthesis of a New Proline‐Derived Organic Catalyst and Its Evaluation for Direct Aldol Reaction Aldol condensation of isobutylaldehyde with acetone catalyzed by amides and amines (1–8) derived from L‐proline gave β‐hydroxy ketone 17 in 80%ee. S Tanimori,T Naka,M Kirihata - 《Synthetic...
12. Process according to claim 1 wherein the unsaturated compound and the aldehyde are reacted in about equimolar quantities. 13. Process according to claim 1 wherein the reaction is carried out in the presence of from 1 to 50 mol % of the quaternary ammonium compound, relative to the al...
The present invention relates to a kind of modified aldehyde ketone resin, preparation method and the application in writing ink.By the aldehyde ketone resin containing functional end-group, the alcoholysis reaction and esterification of acid anhydrides, the modified aldehyde ketone resin of synthesizing...
The invention discloses a mesoporous molecular sieve catalyst, a preparation method thereof and application thereof in preparing aldehyde ketone by gas-phase catalytic selective oxidation of alcohols. The catalyst is marked as Ag-HMS, wherein the molar ratio of SiO2 to silver is 10-500. In the ...
PURPOSE:To prepare a chain ketone, by reacting an easily available aldehyde dithioacetal S,S-dioxide with an alkyl halide in the presence of a strong base, and hydrolyzing the resultant ketone dithioketal S,S-dioxide with an acid. CONSTITUTION:The reaction of the aldehyde dithioacetal S,S-di...