| abstract |
PROBLEM TO BE SOLVED: To produce ketones industrially with very good selectivity during ketone synthesis without using very high temperatures industrially and without expensive post-treatment steps Develop. SOLUTION: When the reaction is carried out in the presence of a catalyst system consisting of a special secondary amine and a carboxylic acid having at least two C atoms, it can be condensed itself under aldol condensation conditions, and Even in the case of ketones and aldehydes, both of which have the ability to form enamines, cross-aldol condensations of aldehydes with ketones are carried out with good yields and very good selectivities. |