1-Methyl-3-(2-(sulfooxy)ethyl)-1H-imidazol-3-ium Chloride as a New and Green Ionic Liquid Catalyst for One-Pot Synthesis of Dihydropyrimidinones under Solvent-Free Condition

Table 1

Temperature and time effect on dihydropyrimidinones synthesis.

Entry	Temperature (°C)	Time (min)	Yield (%)
1	r.t.	90	36
2	50	90	45
3	80	30	93
4	100	30	91
5	120	30	90