Identify the reagent (A) used in the following reaction.

Identify the reagent (A) used in the following reaction.

1. $\mathrm{NH}_3$
2. $\mathrm{RNH}_2$
3. $\mathrm{H}_2 \mathrm{O}$
4. $\mathrm{CH}_3 \mathrm{OH}$

Asked in: MHT CET 2021 (23 Sep Shift 2)

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