The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 5-Methoxy-1H-indole-2-carbaldehyde( cas:21778-81-4 ) is researched.COA of Formula: C10H9NO2.Zhou, Yiming; Li, Ning; Cai, Wei; Huang, You published the article 《Asymmetric Sequential Corey-Chaykovsky Cyclopropanation/Cloke-Wilson Rearrangement for the Synthesis of 2,3-Dihydrofurans》 about this compound( cas:21778-81-4 ) in Organic Letters. Keywords: alkynyl isothiocineole indolyl acrylonitrile diastereoselective enantioselective Cloke Wilson rearrangement; progaryl sulfonium salt indolyl acrylonitrile diastereoselective Cloke Wilson rearrangement; indolyl furan preparation Corey Chaykovsky cyclopropanation. Let’s learn more about this compound (cas:21778-81-4).
The first sequential Corey-Chaykovsky cyclopropanation/Cloke-Wilson rearrangement between propargyl sulfonium salts and acrylonitrile derivatives was developed, affording the tetra-substituted 2,3-dihydrofurans in generally excellent yields (57-98%) with good diastereoselectivities (7:1-18:1). In addition, chiral propargyl sulfonium salt is also suitable for this strategy, giving the optically active 2,3-dihydrofurans with good enantioselectivities. This reaction sequence was designed upon in situ generated 10π-conjugated structures from the dearomatization of indole fragments and subsequent intramol. 1,6-addition
In addition to the literature in the link below, there is a lot of literature about this compound(5-Methoxy-1H-indole-2-carbaldehyde)COA of Formula: C10H9NO2, illustrating the importance and wide applicability of this compound(21778-81-4).
Reference:
Pyridazine – Wikipedia,
Pyridazine | C4H4N2 – PubChem