Preparation of 5,5-Dimethyl-8-carboalkoxybicyclo [4.3.0]non-1-(6)-ene-2,7-dione by condensing dimethylpyruvic acid and 5-ono-6-heptenoic acid to produce a dibasic acid. Esterification of the acid produces a diester which is cyclized to produce the compound.
通过将二甲基
丙酮酸和5-酮-
6-庚烯酸缩合生成二元酸,制备5,5-二甲基-8-碳酰氧基双环[4.3.0]壬-1-(6)-烯-2,7-二酮。酸的酯化产生二酯,然后环化产生该化合物。