Compound

Conventional at 90˚C

Microwave

Time

Min.

Yield %

Time

Min.

Yield %

a

480

62

6.5

80

b

360

66

6.5

82

c

480

65

5.5

86

d

420

61

6

80

e

360

59

4.5

84

f

360

67

4.5

83

g

360

66

5.5

83

h

300

58

5.5

87

i

420

63

5

87

j

360

70

4.5

81

k

420

64

5

81

l

360

61

4.5

82

m

360

66

4

84

n

360

66

6

82

o

480

66

4.5

83