Green Route for Efficient Synthesis of Novel Amino Acid Schiff Bases as Potent Antibacterial and Antifungal Agents and Evaluation of Cytotoxic Effects

Table 1

Results of synthesis of 4a–p in the presence of lemon juice as natural acid.

Entry	Product	Yield (%)	M.P. (°C)	Time (hrs)	Color
4a		86	195	2-3	Brown
4b		74	170	2-3	Brown
4c		78	103	2-3	Dark brown
4d		75	190	2-3	Dark brown
4e		74	170	2-3	Brown
4f		77	190	2-3	Brown
4g		70	98	2-3	Brown
4h		72	140	2-3	Red
4i		70	140	2-3	Yellow
4j		72	202	2-3	Orange
4k		77	190	2-3	Red
4l		73	180	2-3	Red
4m		85	210	2-3	Yellow
4n		76	203	2-3	Yellow
4o		72	130	2-3	Pale yellow
4p		74	212	2-3	Pale yellow