... 2886 J. Org. Chem., Vol. 45, No. 14, 1980 ... The now clear and yellowish organic layer was separated, washed with water, dried, and distilled to give 6.75 g of ethyl a-oxo-3,4- difluorobenzeneacetate. ... (4) Shaw, KNF; NkMillan, A,; Gudmundson, AG; Armstrong, M. D. J. Org. ...