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What is your actual catalyst? TMS cleavage rates of diarylprolinol silyl ethers studied by in situ NMR

Haindl, Michael H. ; Schmid, Markus Benedikt ; Zeitler, Kirsten ; Gschwind, Ruth Maria



Abstract

Diarylprolinol silyl ethers are excellent and broadly applicable organocatalysts for various enamine and iminium-type synthetic transformations. However, their undesired degradation to the corresponding diarylprolinols and the subsequent formation of oxazolidines during reaction with aldehydes may significantly affect their catalytic performance. Therefore, in situ NMR was used to examine the TMS ...

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