1)sn, HCl 2)OH-

[ToZanarkand]

It is Ochem destroyer #45. The last step is
1)sn, HCl
2)OH-

I don't know how this works. Is it reducing reagent?

Thank you for your help.

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[Astros1fan]

It is Ochem destroyer #45. The last step is
1)sn, HCl
2)OH-

I don't know how this works. Is it reducing reagent?

Thank you for your help.

Those reagents are used to convert a Nitro group into an Amino group. It's pretty similar to the Clemmenson reduction (clemmenson reduces a C=O all the way to alkane)

It uses an "active" metal/acid catalys: You can use Fe, Zn, Sn, or SnCl2 in acid followed by base to convert NO2 into NH2.

 

[ToZanarkand]

Wow. I see. Thank you so much for your help. It is clear now.