Entry

Amount of catalyst (g)

T (˚C)

Solvent (mL)

Yield (%)^a

Time (h)^b

1

0.05

Reflux

CH₃CN (10)

80

2

2

0.05

Reflux

CH₃CN (10)

80

2.5

3

0.05

Reflux

CH₃CN (10)

75

3

4

0.05

Reflux

CH₃CN (10)

75

3