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SEM Protection


Boc Protection Reaction 4

A solution of the SM (15.5 g, 27.3 mmol), MeOH (60 mL), and conc aq HCl (37%, 10 mL, 122 mmol) was stirred at 60 C for 3.5 h. Upon completion, the rxn mixture was concentrated in vacuo to provide the pdt as the HCl salt. [13.3 g] [PCT Int. Appl., 2011023773, 03 Mar 2011]