G. Kollenz, C. Kappe, H. A. Nabey
1991
Citations
0
Influential Citations
24
Citations
Journal
Heterocycles
Abstract
Refluxing of dipivaloylmethane (1) in an excess of oxalyl chloride gives a mixture containing the 5-chloro-furanone derivatives (2), (3), and (4), which then can be completely converted into the 5-tert-butyl-4-pivaloylfuran-2,3-dione (5). Compounds (2-5) are hydrolyzed to the carboxylic acid (6), which in reverse is easily recyclized to 5