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Work documented here is about the synthesis and biological activities evaluation of Quinazolin-4(3H)-one based heterocyclic compounds. Chapter 1 provides detail introduction of Quinazolin-4(3H)-one alkaloids. Chapter 2 & 3 describe synthetic approaches for the synthesis and functionalization of Quinazolin-4(3H)-ones, while chapter 4 explains the biological activities evaluation of Quinazolin-4(3H)-ones and their analogs.

Cotton has been placed amongst one of the most important cash crops, in Pakistan. Armyworm, Spodoptera litura, is one of the most notorious chewing pests, attacking this crop and hence depriving the farmers from getting good yields. The project under study, was, therefore, planned to develop some control strategies which are not only effective in their implementation, but also safer to the non-target organisms. A bio-control agent, Bracon hebetor (Say.) was used to control the pest, along with integration of some new chemistry insecticides and pheromones throughout cotton growing...

Novel nanocomposites PCNs and f-PCNs were prepared by the mixture of PC/PMMA/PS and MWCNTs and functionalized MWCNTs by HNO3 and H2SO4 (f-MWCNTs). The new prepared nanocomposites, pure polymer and polymer blend (PC/PMMA/PS) were characterized by FTIR, mechanical and electrical properties. No observable change occurred in FTIR of PC/PMMA/PS in comparison with PCNs and f-PCNs due to the addition of very minute amount of MWCNTs and f-MWCNTs i.e., 0.1 wt.% and 0.3 wt.%, respectively. The modulus of PC/PMMA/PS blend decreased where the modulus was high with 0.1 wt.% using 10 min cycle time at 270...