Table 2.

Synthesis of N-substituted isatin derivatives

Compound	R	Time (h)	Yield (%)
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