Diastereo‐and Enantioselective Organocatalytic Synthesis of Spirocyclopropyl Pyrazolones.

DOI Number:

10.1002/adsc.202300501
Link to literature

Reaction Category:

Cyclopropanation | Spirocyclization

Educt:

2-bromomalonates, substituted 4-methylene-2,4-dihydro-3H-pyrazol-3-one

Product:

spirocyclopropyl pyrazolones

Catalyst:

1,4-bis[[(8α,9R)-10,11-dihydro-6′-methoxy-cinchonan-9-yl]oxy]-9,10-Anthracenedione

Cas No:

176097-24-8

Associated Product from Buchler GmbH:

Dihydroquinine Base

Cas No:

522-66-7