COA of Formula: C11H13NO2. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: Ethyl indoline-2-carboxylate, is researched, Molecular C11H13NO2, CAS is 50501-07-0, about Stereochemically Rich Polycyclic Amines from the Kinetic Resolution of Indolines through Intramolecular Povarov Reactions. Author is Min, Chang; Seidel, Daniel.
Under control of a chiral Bronsted acid catalyst, racemic indolines I (R1 = H, 4-Me, 5-Br, 5-F, 5-MeO; R2 = Me, EtO2C, Ph, 4-MeOC6H4, etc.) underwent intramol. Povarov reactions with achiral aromatic aldehydes II (R3 = Ph, 3-ClC6H4, 4-MeC6H4, 1-naphthyl, etc.; R4 = H, 5-Br, 3-MeO, etc.) bearing a pendent dienophile. One enantiomer of the indoline reacted preferentially, resulting in the highly enantio- and diastereoselective formation of polycyclic heterocycles III with four stereogenic centers. This kinetic resolution approach exploits the differential formation/reactivity of diastereomeric ion pairs.
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Reference:
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics