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Table 2 Synthetic chalcones prepared using Iodine-alumina under microwave irradiation:

From: Microwave assisted solvent free synthesis of 1,3-diphenylpropenones

Entry

R'

R

Yielda(%)

1

H

H

95

2

H

4-OH

93

3

2'-OH

H

91

4

H

3,4-O-CH2-O-

90

5

4'-OH

4-OH

94

6

4'-OMe

4-Cl

88

7

4'-OH

4-OMe

82

8

H

4-NO2

82

9

H

3,4-OH

87

10

2'-OH

3-OMe, 4-OH

81

11

3'-OH

2-NO2

81

12

4'-OMe

4-OMe

79

13

4'-OH

3,4-OH

86

14

4'-OCH2CH = CH2

4-OMe

85

15

2',4'-OMe

4-OMe

89

  1. a Isolated pure yield.