2 results about "Acetylenic acid" patented technology

This invention relates to the field of chemical synthesis technology, and more particularly to a catalyst for the synthesis of alkyl alkynyl acids or alkyl alkynyl esters and a method for their preparation. The catalyst used in this invention for the synthesis of alkyl alkynyl acids or alkyl alkynyl esters is Ag. x Fe y The catalyst has a silver to iron molar ratio of 9:1 to 1:1, preferably 5:1 to 1:1, and the support is an oxide and / or a molecular sieve. The catalyst of this invention can efficiently convert CO2 into alkyl alkynyl acids or alkyl alkynyl esters under mild conditions, which is of significant research importance.

The application discloses a preparation method of a pyrrolidone derivative. Under the action of a non-precious bimetallic multifunctional catalyst, an acetylenic acid derivative shown in formula I is reacted with an amine, a nitro compound or a nitrile compound shown in formula II in a reaction solvent under the heating and stirring of hydrogen gas to prepare a pyrrolidone derivative shown in formula III, and a reaction formula is as follows: the non-precious bimetallic multifunctional catalyst is a nitrogen-doped carbon-based carrier NC derived from a metal-organic framework material ZIF-8 and an effective active ingredient embedded on the carrier NC; the effective active ingredient comprises two metals, one metal is Co, and the other metal is any one of Ni or Cu. The yield of the pyrrolidone derivative synthesized by the method can reach 77% to 100%. The method has the advantages of simple process, high selectivity of the target product, cleanness and environmental protection, small catalyst consumption, low cost, simple catalyst preparation, high catalytic stability and suitability for industrial production.