Nickel – Promoted Favorskii Type Rearrangement of Cyclic α-Bromoketones
作者:Vishnu K. Tandon、Kunwar A. Singh、Anoop K. Awasthi、Hardesh K. Maurya、Sanjay K. Gautam
DOI:10.3987/com-08-s(s)4
日期:——
Favorskii type rearrangement of cyclic α-bromo ketones 2 is promoted by NiCl 2 in refluxing methanol, giving the rearranged carboxylic acid ester 3 in excellent yields. The reaction of 4-bromo-2,3,4,5-tetrahydronaphth [2,1-b]oxepin-5-one (5) and its regioisomer 8 with NiCl 2 in MeOH resulted in Favorskiirearranged carboxylic acid esters 6 and 9 respectively.