Tetrahedron Letters. Volume 49, Issue 34, 18 August 2008, Pages 5098-5100
Enantioselective total syntheses of ropivacaine and its analogues
Nagula Shankaraiaha, Ronaldo Aloise Pillib, , and Leonardo S. Santosa
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http://dx.doi.org/10.1016/j.tetlet.2008.06.028 
