Table 2 Synthesis of N-substituted isatin derivatives

1

H

_

_

2

CH₃

4

87

3

C₂H₅

12

89

4

(CH₂)₂CH₃

12

89

5

(CH₂)₃CH₃

24

93

6

(CH₂)₄CH₃

24

90

7

(CH₂)₅CH₃

24

95

8

CH₂CH = CH₂

12

93

9

CH₂C₆H₅

12

90

10

CH₂COOC₂H₅

12

93

11

C₂H₄Cl

24

79

12

C₂H₄Br

24

83