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From: Christelle Marmillon (chris_marmillon$##$yahoo.fr)
Date: Fri Nov 27 1998 - 11:44:49 EST


Hello!

I'am PhD Student, and I'am looking for the mechanism of the following reaction (Reaction Scheme by attach document).
There is no Guanidine formation after reaction between an amine and N-Cbz-2-methylthio-3,4,5,6-tetrahydropyrimidine under basic condidtions. Using amine hydrochloride and the same isothiourea, guanidine is formed with ~60% yield.
Any idea about this mechanism can help me
Thank you
Christelle Marmillon

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