Significant supplier-dependent disparity in catalyst activity of commercial Pd/C toward the cleavage of triethylsilyl ether

Pd/C catalysts exhibit remarkable supplier-dependent difference in catalyst activity and property. Some commercial Pd/C catalysts are quite acidic. Although a TES ether cleavage reaction using 10% Pd/C in the absence of hydrogen was quite recently published, we could conclude it was only an acid, released from the catalyst, catalyzed solvolysis, and hydrogen is essential for the actual 10% Pd/C-catalyzed cleavage of a TES ether.