Author/Authors :
Kailiang Wang، نويسنده , , Yanna Hu، نويسنده , , Meng Wu، نويسنده , , Zheng Li، نويسنده , , Zhihui Liu، نويسنده , , Bo Su، نويسنده , , Guang-Ao Yu، نويسنده , , Yu Liu، نويسنده , , Qingmin Wang، نويسنده ,
Abstract :
A mild synthesis of a series of phenanthrenes with different substituents on the phenanthrene ring is described. The method involves intramolecular oxidative coupling of a variety of 1,2-diarylethylene derivatives in the presence of m-chloroperoxybenzoic acid (m-CPBA) in trifluoroacetic acid (TFA) to yield phenanthrenes in high yields. The present approach solves a key step for the synthesis of polycyclic structures related to an alkaloid tylophorine.
Keywords :
Phenanthrene ring , m-CPBA/TFA , Intramolecular oxidative coupling , Nonmetallic reagent
