Lu, Hong; Lin, Jun-Bing; Liu, Jin-Yu; Xu, Peng-Fei published the article 《One-pot asymmetric synthesis of quaternary pyrroloindolones through a multicatalytic N-allylation/hydroacylation sequence》. Keywords: indolecarboxaldehyde allyl ester multicatalytic enantioselective allylation hydroacylation sequence; quaternary pyrroloindolone asym synthesis; asymmetric catalysis; carbenes; hydroacylation; indoles; multicatalysis.They researched the compound: 5-Methoxy-1H-indole-2-carbaldehyde( cas:21778-81-4 ).Electric Literature of C10H9NO2. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:21778-81-4) here.
An intramol., quaternary-C-center-forming hydroacylation of α-substituted acrylates was discovered. This interesting transformation can be readily incorporated into a multicatalytic tandem process enabled by a combination of nucleophilic tertiary amine and N-heterocyclic carbene catalysis. With no addnl. stoichiometric base required, this transformation affords quaternary pyrroloindolones with high levels of enantioselectivity.
There are many compounds similar to this compound(21778-81-4)Electric Literature of C10H9NO2. if you want to know more, you can check out my other articles. I hope it will help you，maybe you’ll find some useful information.
Reference:
Pyridazine – Wikipedia,
Pyridazine | C4H4N2 – PubChem