How Basic is NaSH Compared to NaOH in Organic Synthesis?

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SUMMARY

NaSH (sodium hydrosulfide) is less basic than NaOH (sodium hydroxide) in organic synthesis, as evidenced by the acidic adducts they produce; NaSH yields H2S while NaOH produces H2O. This difference in acidity indicates that NaSH's basicity is lower, which is crucial for reactions involving sensitive functional groups, such as amides in pyridine derivatives. When refluxing a bromo pyridine with NaSH in ethanol, caution is advised to prevent hydrolysis of the amide moiety due to NaSH's basicity.

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gravenewworld
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I am using NaSH to make a mercaptan by refluxing a bromo pyridine in ethanol. The only thing is that my pyridine also has an amide moiety, and I am afraid of the basicity of NaSH (since S is 1 below O on the periodic table). If I reflux this reaction I am afraid I might hydrolyze off the amide, so I was wondering, how basic is NaSH compared to NaOH?
 
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Hi

I think it is less basic than NaOH, since the acidic adduct of NaSH is H2S, where NaOH produces H2O. Since the former product is more acidic, the parent compound (NaSH) must be less basic.

Regards
 

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