Synthesis of a set of isomeric 2, 4, 6-triarylmorpholines and 2, 6-diaryloxathianes from the corresponding 1, 5-diols has been described. The method provides an efficient route to six- membered heterocycles from acyclic diols and is found to be better than Mitsunobu procedure in yield and waste management. In a related study, the ring contraction of pyranone to two isomeric cyclopentenone derivatives through Nazarov reaction has been ...
![2-[(2-oxo-2-phenylethyl)anilino]-1-phenyl-1-ethanone Structure](https://image.chemsrc.com/caspic/096/41120-12-1.png)