Fries Rearrangement

Mechanism of the Fries Rearrangement

Original publication	Ber. Dtsch. Chem. Ges.. 1908, 41, 4271.
Reviews	Chem. Rev.. 1940, 27, 413. Org. Prep. Proced. Int.. 1992, 24, 369. Org. React.. 1942, 1, 342.

Sample reactions

ZrCl4

)))

CH2Cl2

RT, 24 h, 93%