In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Chromatographic separation of the enantiomers of 2-carboalkoxyindolines and N-aryl-α-amino esters on chiral stationary phases derived from N-(3,5-dinitrobenzoyl)-α-amino acids, published in 1985-11-27, which mentions a compound: 50501-07-0, Name is Ethyl indoline-2-carboxylate, Molecular C11H13NO2, Category: tetrahydropyran.
The enantiomers of N-acyl amino acid esters RNHCHR1CO2R2 (R = Ph, 1- or 2-naphthyl, 2-anthryl; R1 = Ph, Me, Et, etc.; R2 = Et, Me, etc.) and 2-carboalkoxyindolines I (R3 = R4 = H, R3 = 5-Me, R4 = 6-Me; R3 = 5-MeO, R4 = H; R3R4 = 4,5-benzo, 6,7-benzo) were separated by column chromatog. on chiral stationary phases prepared from N-(3,5-dinitrobenzoyl) derivatives of (S)-leucine or (R)-phenylglycine. The degree of chiral recognition was high. Separation factors >10 were obtained and preparative separations were performed. A chiral recognition model is presented.
After consulting a lot of data, we found that this compound(50501-07-0)Category: tetrahydropyran can be used in many types of reactions. And in most cases, this compound has more advantages.
Reference:
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics