Reaction of dimethyl sodio-3-ketoglutarate with glyoxal and substituted glyoxals
作者:Steven H. Bertz、G. Rihs、R.B. Woodward
DOI:10.1016/0040-4020(82)85046-1
日期:1982.1
A simple and efficient two-step preparation of bicyclo[3.3.0]octane-3,7-dione starting from the sodium enolate of dimethyl 3-ketoglutarate and glyoxal is described. This is an unprecedented case in which a condensation reaction of glyoxal is more successful under vigorous conditions (refluxing methanol) than under much milder ones (buffered water at ambient temperature). The major product (after h