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

Table 1

Solvent effect on acetylation of 4-chloroaniline by SSA at room temperature.

Entry	Solvent	Time (min)	Conversion (%)
1	n-Hexane	7	98
2	CH3CN	10	98
3	CH2Cl2	7	98
4	CHCl3	5	90
5	MeOH	30	85
6	Neat	3	98