Table 3 Comparison the efficacy of different catalysts in 5g product preparation.

From: Algal magnetic nickel oxide nanocatalyst in accelerated synthesis of pyridopyrimidine derivatives

Entry

Catalyst

Time (min)

TON

TOF

Yield (%)

1

Bulk Ni oxide

240

12,200

50.83

61

2

Commercial NiO NPs

60

16,000

266.66

80

3

Acetic acid

120

10,000

83.33

50

4

Biogenic NiO NPs

40

19,200

480.0

96

5

HCl

90

6,000

66.67

30

6

Neat

Overnight

-

Trace