Green enantioselective method for asymmetric alkylation of pyrazolones by phase transfer catalysis.

DOI Number:

Patent Number CN118851847

Reaction Category:

MOP ID:

MOP_0000369

Educt:

pyrazolones, propargyl bromide

Product:

(S)-4-benzyl-2,5-diphenyl-4-(prop-2-yn-1-yl)-2,4-dihydro-3H-pyrazol-3-one

Catalyst:

(1S,2R,4S,5R)-2-((S)-hydroxy(6-methoxyquinolin-4-yl)methyl)-1-(2-(((4-methoxyphenyl)diphenylmethyl)amino)-2-oxoethyl)-5-vinylquinuclidin-1-ium bromide

Cas No:

3055566-39-4

Cas No:

56-54-2