# In the following reaction

Question:

In the following reaction

1. $\mathrm{HCHO}$ and $\mathrm{MeOH}$

2. $\mathrm{HCHO}$ and $\mathrm{tBuOH}^{2}$

3. $\mathrm{CH}_{3} \mathrm{CHO}$ and $\mathrm{MeOH}$

4. $\mathrm{CH}_{3} \mathrm{CHO}$ and ${ }^{t} \mathrm{BuOH}$

Correct Option:

Solution: