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Table 1 Optimization of reaction conditions using different catalytic amounts

From: Design and preparation of Fe3O4@PVA polymeric magnetic nanocomposite film and surface coating by sulfonic acid via in situ methods and evaluation of its catalytic performance in the synthesis of dihydropyrimidines

Entry

Solvent

Catalyst

Amount (mg)

Time (min)

Yielda (%)

1

EtOH

–

–

10

Trace

2

EtOH

Fe3O4@PVA-SO3H

10

10

65

3

EtOH

Fe3O4@PVA-SO3H

30

10

82

4

EtOH

Fe3O4@PVA-SO3H

40

10

95

5

EtOH

Fe3O4@PVA-SO3H

50

10

99

6

EtOH

Fe3O4@PVA-SO3H

60

10

99

7

EtOH

Fe3O4@PVA-SO3H

70

10

99

  1. aIsolated yield
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BMC Chemistry

ISSN: 2661-801X

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