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What is the role of NaOH in a given reaction. whether It act as a base to removal proton from amine or just to provide Na ion for the synthesis of sod. dithiocarbamate?

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Proposed mechanism

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$\ce{NaOH}$ is used as a base to remove the amine proton, which improves the nucleophilic power of the molecule. This way the addition to the double bond in $\ce{CS2}$ is favoured.

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    $\begingroup$ NaOH can't deprotonate amine. $\endgroup$ – Mithoron Sep 13 '16 at 17:32
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    $\begingroup$ @Mithoron to an appreciable extent, maybe, but it's not like it can't happen at all. This seems like the most likely mechanism to me. $\endgroup$ – ringo Sep 13 '16 at 19:24
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    $\begingroup$ @Mithoron But once the dithiohemicarbamate is formed, sodium hydroxide can remove the proton on the nitrogen and prevent the return reaction. (Sometimes just the order of steps matters.) $\endgroup$ – Jan Sep 13 '16 at 20:50
  • $\begingroup$ @Mithoron, I agree with your opinion, I think NaOH only act as source of Na ion, $\endgroup$ – Khan Sep 14 '16 at 2:25
  • $\begingroup$ @Jan, i proposed a mechanism and edited my question $\endgroup$ – Khan Sep 14 '16 at 2:35

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