Derivatives of spiro [3.3] heptane have been prepared from the basic Fecht acid, dLspiro [3.3] heptane-2, 5-dicarboxylic acid. Spiro [3.3] heptane-2, 2, 5, btetracarboxylic acid tetraamyl ester has been isolated and shown to be a major intermediate in the preparation of Fecht acid. Improved syntheses of the corresponding diacid chloride, amide, glycol, and methyl ester have been developed. From these materials new dialkylaminoalkyl esters, ...
![spiro[3.3]heptane-2,6-dicarbonyl chloride Structure](https://image.chemsrc.com/caspic/465/52097-87-7.png)
![N,N-dimethylspiro[3.3]heptane-2,6-dicarboxamide Structure](https://image.chemsrc.com/caspic/276/6641-48-1.png)
