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They were right after all
Date:1/31/2008

chniques available at the time. Initially, the yield of quinine they obtained was far too low. The key turned out to be the aluminum powder used as a reducing agent in the last step. It must not be too fresh, instead it must be exposed to air for a while first to produce a small amount of aluminum oxide. This results in yields of quinine in agreement with those in the old publications.

Analytically pure quinine can be isolated from this reaction by the selective crystallization of the corresponding tartrate salt, just as described by Rabe in 1939, says Williams. We have thus corroborated Rabe and Kindlers 1918 publication. Woodward and Doering could theoretically also have followed this procedure in 1944.


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Contact: Robert M. Williams
rmw@chem.colostate.edu
970-491-6747
Wiley-Blackwell
Source:Eurekalert

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