Are there alternatives to 2-Methyl-2-proanylpiperidinecarboxylic acid ethyl ester (CAS: 877173-80-3) in synthesis?

In the synthesis of 2-Methyl-2-proanylpiperidinecarboxylic acid ethyl ester (CAS: 877173-80-3), there are a few alternatives that can be considered. These include using different starting materials, such as other piperidines or ethyl esters, or employing different synthetic routes. Common alternative reagents like carboxylic acids, esters, or amines can be utilized to achieve similar products. However, the choice of alternative reagents should be based on the specific requirements of the synthesis and the desired product characteristics.