Acetylation of Phenols, Anilines, and Thiols Using Silica Sulfuric Acid under Solvent-Free Conditions

Table 3

Acylation of 2-naphthol with Ac₂O by SSA in solvent-free condition at room temperature.

Entry	2-Naphthol : Ac2O (mole ratio)	Yield %
1	1.0 : 1.0	40
2	1.0 : 1.2	50
3	1.0 : 1.5	70
4	1.0 : 1.7	83
5	1.0 : 2.0	90