S. no

X in aldehyde

Y in aldehyde

Z in aldehyde

Product

Time (min)

Yield

1

Cl

H

H

4a

30

94

2

OH

OC₂H₅

H

4b

35

93

3

OH

H

H

4c

30

89

4

CH₃

H

H

4d

40

90

5

H

H

H

4e

35

88

6

NO₂

H

H

4f

40

91

7

H

H

NO₂

4g

40

92

8

H

H

OCH₃

4h

30

89