Clauson Kaas Pyrrole Synthesis Catalyzed by Acidic Ionic Liquid under Microwave Irradiation

Table 1

Comparison of the catalytic activity of the catalysts.

Catalyst	Time (min)	Yield (%)
CH3CO2H	80	52
[bmim][BF4]	30	56
[hmim][H2PO4]	30	61
[hmim][HSO4]^a	60	73
[hmim][HSO4]	4	85

^aWithout MW.